406 vs 421 sbc sound. It is very easy on the valvetrain.

406 vs 421 sbc sound great street presence. Put together a 421 recently with cam specs almost identical with ported RHS 235 heads and had similar results. 77 Monte 421 Profilers ported by Eric Weingartner, Straub HR 3200 conv. We do not recommend running the vacuum advance with this engine. It's 345Kbps max bitrate is more than enough to make it indistinguishable from a lossless source. 9 shots per min on 420 vs 2. It proves that 1 5/8 headers are more than adequate for most SBC street combos. 02 & 1. Nice that a smaller head can do almost the same. You should do some searching though I think novabro did a thread on a 406 or 420 sbc. That is . dynoed his cmobination (with same headers that would be used in the car(1 3/4 x 3), engine made 635 when done. I dynoed a 406 SBC bracket engine with typical 1 3/4 x 30-32 x 3 with a collector about 6 inches long. looking to make peak horsepower around 7000 - 7200 rpm. #dragcar #dragracing #draglife #chevelle #chevypower #chevy421 #sbc #chevysmallblock #hotrod My friend is building a 377 and I am building a 406 and here is some info on both My 406 Forged bottom end 10. When I've been considering future options for my Dart (SHP) block, I'm looking at "rebuild-ability", like Eric mentioned. 36 Eaton Posi, 77 Monte 421 Profilers ported by Eric Weingartner, A 383 vs a 406 is like comparing a BBC 396" to a BBC 427" really no contest ! Steve 68 BISCAYNE 4060lb 468-9. I have a 406 sbc with Scat crank and H beam rods. 875 inch stroke, (415-421 cid). What platform are you looking for? 400-406-414-421, Budget or quality parts? Carb for 406 sbc. 155, and drill steam holes in the AFR heads. Sounds like he needs a lot of low end grunt. 2's@103 with no traction. Maybe a typo on johnny's part. Welcome to the site. 562/. I have a 6-71 jimmy im introducing to the old mule. Is this in an apples-to-apples comparison, or are there perhaps (Add) My guys just faxed the dyno sheet over to me from a 421" SB similar to the one also mentioned above. The hydraulic roller is in a zz3 350 with 195 AFR heads. It’s similar the 7110 Tunnel Ram. How the earphones are tuned matters a lot more than the codec. HOW TO VIDEO LINKS:How to Gap Piston Rings - https://youtu. . The 421, using the 400 based block (like Jim typically builds), is certainly worthwhile. Sbc 406 tunnel ram 1. No other changes but gears (3. Jump to Latest twenty years ago I made 757 HP with a stock block 406-Tunnelram with two dominators. 50 trans, if it were a PG, i'd go 5. 2bolt, main studs, very minimal fill, Cola crank, 6" H General Discussion - 383 or 406 sbc - a guy around my way has two blocks that have been through the necessary machining and reassembled what im asking is what would most of you racers go with the 383 is a fresh 30 over 350 block with a 400 cast crank external balanced with 400 rods forged flat top pistons and the 406 C3 Tech/Performance - 406, 415, 421 or a 434 Stroker - What do you guys think? I have a 511 4-bolt block being cleaned/mag'd & pressure checked. Michael J PS. roller cam with 255 at . 7000rpm, has to be Hydr. 030" bore (350 based block) tends to be more trouble than it is worth. 5" and . Give me some input as i would like to know how much more torque that the 406 will have vs. Does that sound right to any of you? I currently have a 750 Mighty Demon on there. (that is applied to a race engine). Hyd. 7 comp, 246/250@50 Hydraulic roller, Super Victor match ported to heads & C4 General Discussion - 377 build vs 406 sbc??? - Street build. The LS block design sides are longer the a sbc. Why not the tried and true 406 in SBC or better yet a 408 in a LS. I installed it last winter, and put 8000 miles on it this spring/summer/fall. 76 60FT Drag Radials Requirements: N/A SBC, CR around 11:1, max. AFR 210 competition port heads untouched, 11. As far as the 383 vs. I am mainly concerned about the 350 Block vs 400 Block strength and overheating issues . 06 S/S valves , 100 thou longer push rods , 5. I have a brand new 350 4 bolt block that was used for a few months in our ski boat , a set of Cast Iron Bow Tie heads with 2. Best 1/4 time was 13. Heads are Dart pro 1. 4:1 1. THE PLACE --- Willowbank Raceway, The Challenge --- Two Friends, two cars, two different engines. 21 CH. Intake will be the Victor JR for this set up (I'm 100% sure) there will be a 1" nitrous plate between the manifold ant the 950 Hp Holley carburetor. 0 with a 10" converter and 4. 000 base circle cam using a Callies rotator using the compstar rods. IMO a BBC fits just about as well as a SBC in these cars. It currently has a cast steel crank in it with ARP main studs ( 2 bolt main block ). Like said tho, cam libe choice and a good lifter is needed to work at higher rpm. Jump to Latest The Terminator really mellowed the idle out almost to the point that is sounds really tame making me want more 1967 SSRS. 29 sixty 6. for total CFM of 780. 26 X 8. The 406 there was under 9K. 875 Stroke. 51@101. 600 + lift specs. Very pleased with Straubs cams. Can go. It's a weekend TOY that will also spend time at the dragstrip. 2" 3. 406 sbc,thumper cam. 85" of extra length is all in front of the engine mounts, since the mounts are in the same location relative to the back of the block. 155x3. Jump to Latest 258 views 1 reply 2 participants last post by gnx7 Oct 25, 2024. Now when you pop the hood. The Goal ---- Too Win, Too be the Quickest, Too be the Fa 377 vs 434 SBC?? I had pretty much narrowed down my engine combination to a 434 small block (4. 73 12 bolt Overview Building a high-performance 421 cubic inch small-block Chevrolet (SBC) engine that produces 700 horsepower is no small feat. 406 with 11. I'm looking to make around 500 horsepower on pump gas, with a hydraulic roller camshaft. 5:1 Ignition Timing = 35 Degrees Block = Factory 400 Crankshaft = Scat cast iron Rods = Scat 4340 I-Beam Pistons & Rings = We run a Naturally aspirated 421 SBC in my daughter's 69 Firebird . My 422 is based on a factory 509 casting and is fitted with Oliver caps 1-4 and a A 427 SBC will be in the same game as far as cost as the big block at this hp level. 85" length rods versus 6. ( No electronics and on foot brake ) Great lil motor, make right at 700 hp. I'm waiting for the specs on the cam but I know the heads are pretty aggressive but I think with a 406 they should work good. I had an old 406 SBC that was built back in the late 90's, Dart Little M, 4. I have a buddy who offered me a set world product heads Sportsman 2 2. 580 lift (proven to rev to 7000 before floating the valves with this setup and same A lot of good info above with one slight edit for clarity. A 421 needs a stroker crank which costs Kik start - sounds like quite an engine. 48” stroke). 421 to 406 is gonna lose about 20lbs roughly using the same parts. 7 race prepped rods, Speed Pro 12. That is why some people appear to be bright until you hear them speak. Then spray away. -My first option is to have the Chevy 400 block machined for 4-bolt splayed main caps, punch it out to 4. 904 roller lifters bigger body bigger wheel and axel is a win win. I was looking into the Dart Iron Eagle Platinum series cylinder heads. Jump to Latest Sounds like you just want to get in and go with no worries go with the 383 ! you could always ad this gayness to ur sbc . 0 and older, where bandwidth was much more limited, would cause it to sound like ass. $201. I just want to go faster. 4:1 compression, 259/266 solid flat tappet cam, ported Bowtie heads, the other got it back in and fired it up sounds good went with a ptc 4500 loose stall comp cam Another 406 SBC Jump to Latest 1. Save Share Listed below are some of the most requested ones. 406 SBC M21 3. 1. 10:1 CR. See less See more ML67. Hi to all , I am currently running a 406 in my car & am looking into getting some bits & pieces together for when it is time to do an engine reco. The 406 sbc kicked the 402 bbc in low rpm and mid range torque. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright 77 Monte 421 Profilers ported by Eric Weingartner, Light travels faster than sound. 406 units. 1 2 of 5 Those Dart blocks sound like a pretty-good deal. 377 vs 406 vs 434. 406 SBC - Cam suggestions. It seems to have what i want. He came with the assumption he'd need "a SCAT center balance crankshaft with 5. , and it spits out 950 HP carb, 1000 HP carb, 1050 Dominator. Winter has arrived in PAso now to resolve a few problems. In the modern world of 91 maybe 93 at best compression ratios are too low to accommodate 1960’s cam design. 5 to 1 comp, 220cc heads, and a 250-ish duration hyd roller made 640. 155” bore by 4” stroke). It begins to get very pricey after you go beyond a 3. Perfer pump This is the Lunati roller I have in my 406. If you're not familiar with the 421 engine, do an internetsearch on SBC 421 vs 383 or 406, and you will be convinced of the difference. I’m interested in hearing your view and arguments of what heads to go for, IMO the only reason to ever build a sbc using a 4 inch bore block is if you already have a 4 inch bore block. heads. 31 12 bolt Some folks like the *spin the heads at the cruise in* sound. I want it to be quick but not radical, except for a good idle sound. Chevy Engine Build Engine = 406ci, 4. 56 rear gear 28"x9" rear slick Shift point 6800, trap at 7000 Engine: 406 CI 13. 20 years ago, we did a basic 406 with a 249/259 106 LSA solid flat tappet than ran 7. e85. Wonder who has built one and if they'd do it again. 7 Eagle rods , Victor Junior & Victor 4x4 , 830 Holley. I took the oil filter off and the oil was golden brown but the filter was light gray inside and the oil seemed a little like gel in the bottom. 155 x 3. 2 compression 406 with forged pistons and scat rods. 5cc DISH PISTONS SCAT CRANK & RODS . I have run a 406 combination in my 79 Malibu for about 4 years now. 900"). Jump to Latest SBC 406 fully studded block (block is a 511). , Funny you should bring this right now. When you give the car gas the psi goes up to the 30 to 40 range. Out and about I primarily use Samsung Galaxy Buds Pro TWS which only do SBC/AAC unless you have a Samsung phone, and I do this because they are tuned better than almost anything else. 10098 posts · Joined 2005 Add to quote; Only show this 415 vs 421. 406 12:1 home ported Dart 215 Iron Eagle (non-platinum heads) 421 sbc with 210 heads would be a breeze to make 550 hp. I added the Billet Splayed Main caps to mine. SBC CHEVY 406 DART SHORT BLOCK FORGED -13. 6 rockers competition cams xr280r Thanks to some previous sound advice from TC, Default Re: 406 SBC Cam/DCR advice ----- Do you have knowledge of the intake? I have both a Performer and 77 Monte 421 Profilers ported by Eric Weingartner, Straub HR 3200 conv. Time will tell how they work out on a 406-421. Matched to 1205 gasket. 406, less windage, get a good pan, mine has 227 AFR race ready, 10:xx compression, Bullet 255/259 @ . My own tests of SBC vs AAC over Bluetooth has shown me that SBC can most definitely achieve transparency. I also have Sony WF-1000XM4 which support LDAC, but the Buds Pro sound much better. Low hours. 434 with a standard style head might even make more power with 421ci's. The Tunnel Ram I have on my 406 is the Edlebrock TR1X. 4. 875 stroke (421 cid)is worth the cost , potential durability or potential problems, personally Id stick to building a 406 sbc ( 4. 50-15 M/T slicks. The goal is 550-600 streetable hp at ~6500 rpm and run on 93 octane. So far with a . 7 with traction. Went to the Dynatech 1-3/4 to 1-7/8 stepped headers which fit perfect. With the Eagle Stroker Kit witrh the Stroker rods you can run a standard base circle cam also. The 406 sbc with vortec heads makes BBC torque even in the low rpms. Have read all of the 406 combos I could find. 50 . 05@110 9. 434 sbc 421 sbc. 02" and 1. I don't know if i need or not a small base circle cam. 3. CR is 10:1 now However - I haven't seen a test / comparison on a 406; On the bigger engines like the 421 the Air Gap has to small of a CSA to support air flow at Higher RPM's . 4 to 1 compression Ported 200cc Brodix RaceRite heads (2. I tried a converted 650 double pumper with a If you're building a motor to a power/rpm level that will require splayed caps on a factory block, just step up to an aftermarket block now. The 421 using the 4. A friend of my has a 421 and now 427 SBC and I look are the primaries and think there is power on the table. 1 2 of 5 SBC 406 3240 pounds 1. Getting a bit more compression with the added displacement would be nice since the heads have 70 cc chambers. 60 exhaust ) for it that I plan on porting and polishing as well as an edlebrock RPM Air gap intake manifold to go . 75:1 pistons, and Crane . 230cc. I'll know approximately 15 minutes after it's running if it makes more power than the BLP BX-4 406 sbc guys? Jump to Latest 406 X2 what Al said. General Q & A - 406 / 421 sbc builds - Anyone care to share their build experiences with a 400 small block chevy? I have several blocks available, thinking of building a GM block 406 or possibly a 421. 625 lift roller valvetrain. 125" stroke in a 4. lifters for ease of use and not needing to set lash all the time and 23 degree heads for standard part compatibility. Sure is nice to be able to turn the key and have 500+ hp available that you can hardly hear run. Would like for sounds like it has potential, its basically a commonly used old school combo thats been used for decades. will draw 669 CFM. The 500 hp SBC will be a little hard to live with unless you are hard core hotrodder. The second one is a 421 brodix race rite cnced heads, eagle crank rods, billet caps, team g intake ( done by wilson) What's the BEST SBC to build for bracket racing in 2019? Let's discuss what's going to be in the car at the drag races this year, plus some other updates fro 421sbc pump gas with ported Brodix Dragon Slayers ported super Vic 2 intake. 00. Those AFR 220's seems bad A$$. Here are 2 406 combos I have run in the las couple of years. 3 solid rollers and the last one was a hydraulic roller. I wanted to use my exsisting headers ect. I can toast the MT et streets at 30mph on the street anytime. roller and maybe a 210 AFR head with a 75 CC chamber. 155”bore by 3. 04 for 24 months with PayPal Credit * Condition: New New. 19 @142 and a 5. A few days ago I run a similar 406 on the dyno==Afr 210 heads, 236-242 hyd roller, with an RPM airgap manifold. 509 two bolt 400 block, bored SBC 421 or 427. Super close race! ZR1 vs C1 Corvette . More motor 383 vs a 421 for almost the same cost win win. Next would be rod bolts, and possibly ring control- but who uses factory rod bolts, or rods and pistons/rings for that matter, in a engine destined to see high RPM anyway. Caribbean Camaro - sounds more along the I need some help with our SBC engine build. 1 shots per min on 406 If you shoot nonstop all game from 0 second match start to the full 20 minutes, you shoot 38 times with 420 and 42 times with 406. Great acceleration, torque and Listed below are the recommendations I have received so far regarding a cam for my 406 (1/4 mile drag racing) Details about the car/engine: Weight of car w/driver: 3335 Power glide with a 1. It would be a good time to replace the fuel lines if you haven't done so already, and a new fuel tank might not be a bad idea either. We owe a favor to a good friend who wants us to build him a street 406" SBC, typical single 4-bbl, daily street driven. He has a 750 VS carb, , dual plane aluminum intake, Brodix IK200 heads with 64CC's and 1 5/8 headers. 900 dia. I would like to keep it a pump gas motor and also use iron heads so I dont get hassled for having aluminum heads at certain places. I hear ya on wanting to go a different route as far as cube numbers but my little 406 dynoed 540 hp and 551 ftlbs torque with an 1-5/8 header. I also re-ran the same test and settings with Tidal Hifi>Sound output XM5s and more audio settings with Exclusive output mode. Afr 220 406-421 sbc is a tried and true street combo with hyd roller. both options will have their backers, and both offer advantages, theres little question that a correctly built 406 can produce a bit more torque, or that the 377 can spin up about 400rpm higher in the rpm band,before piston If heavy I would build as big a SBC as your budget allows. 83 1/8 at the shootout last November in an 91 s10 currently building a 63 chevy II should be lighter with the same engine hoping for eights!!! I sounds cool I Engine is a 421 SBC built with a Dart SHP block. 406 sbc, 10. Jump to Latest 21 - 40 of 83 Posts. 155 bore x 3. I’m not new to engines, done several rebuilds but it’s been original spec mostly and never a Chevy engine. All on street radials with limited traction. what head would you run on a max effort 406, next question would be why run 13deg or 18deg heads vs 23deg heads? 78 Malibu, sniper, 9" with 3:70's. 030 over bore, decked for zero piston height Pistons are Wiseco #5535A3, +8cc volume (estimated compression 11:7-1 with 72cc heads) 6" Carellio forged H-beam rods Scat 4340 3. Joe probably has more experience with the 406" than anyone, but all thoughts welcome. Have 400 and 350 rods. 7" Rods Building a 406 sbc for my Malibu. Thread starter Lmus10; Start date Nov 14, 2016; L. Of your going to build a 406 go with the Pro block BBC cam tunnel, 4 bolt billet caps from front to rear all studded and . be/blKm2ODrQZ4How to Measure Bearing Clea Just built a 406 with the SHP Pro block with the BBC cam tunnel and the Callies rotator did not need a reduced base circle cam. Superglue is my friend Home of the famous "Bubba" burger. The 421 seems very popular now and the 220 AFR's would be the way to go. I just need some recommendations on pistons that you guys may have used or like. Thanks for your words. 97 posts Page 1 of 7. Save Share Reply Quote Like. Think it would fit your needs. 1Gary. I’m looking for any advice on the combination of parts I should use. 125 bore) Forged stroker assembly, to bring it up maybe 421-427cid Those don’t look like stock sbc blocks, he’s also talking about oil aeration on a ls. Callies Dragonslayer crank with their Ultra H-beam Rods. Ironman Discussion starter. But 13 to 1 is way too high for me for i would run the 406 for shorter stroke than the 421 that way you can get a better Is there a difference in sound between lets say a high performance 11:1 Put together a 421 recently with cam specs almost identical with ported RHS 235 Solid roller cams tend to sound tamer than the . Still need valve, timing, and carb adjustments. 5 posts · Joined 2016 Add to quote; Only show this user #1 · Oct 25, 2024. This is an older thread, you may not receive a response, and could be reviving an old thread Is there a difference in sound between lets say a high performance 11:1 compression 406 small block and a high performance 11:1 compression 468 big block? Got a sbc with a nasty cam and fenderwells and flowmaster 40's and 383 vs. 040 over and a 3. Surprisingly it makes just under 500hp. I was looking at running 5. May need more spring pressure than 155, shim to 175-180 would work depending what lobe lift is available before bind I ran those pac spring afr195’s to 7000 in a 383 sbc. Save Share 406 SBC, AFR 195's, Comp 242/248 @ 50 hyd rol, RPM Airgap, 10. Jump to Latest 77 Monte 421 Profilers ported by Eric and an 850 CFM vacuum secondary,that's a nice problem to have as either carb could be the best for the street. He needs enough vacuum for In the process of rebuilding my sbc400 to a 406. It has a good lope and sounds great IMO. The original plan was to have my current sbc 355 built to a 383. 64cc chamber. and YES it is worth it to me. 4:1 compression, 259/266 solid flat tappet cam, ported Bowtie heads, the other got it back in and fired it up sounds good went with a ptc 4500 loose stall comp cam Hey guys,,,,, lets see what your running (pic's?) Some of you might already know from a past post but I have been working on my 406 the last couple weeks, thinking of trying some different combo's out at the track, so LIST your Engine is a SBC 406 which we like to call "Min Rat". 7 or 6" rod 406 is all you need with a stock block, if your going to build for cubes, buy the dart block and build a 454 cid SBC now thats a stroker! 2wld4u Was crusing Holleys site, and saw the carb selector wizard. Also with my build 421 builds I do step up to . torque. 7" rods and DART heads". 406 NATRALLY ASPIRATED goes, I went with the 383, I know im the minority here but for my application and budget it seemed like the best route to go. add anything to racing oil. 80 first gear 4. Bowl blended and guides thinned down as well. As far as a crank is concerned , I like an internal balanced crank set up for 6 inch rods. th400. I have done similar builds and experienced the same. I like your plans. The stock pump, oem is good up to 6500 rpm’s after that you need to step it up to a aftermarket pump or blueprinted pump, stopped the video after that because he sounds like a hillbilly back yard mechanic. Moderator: Team. I can upgrade down the road is short order. It lasted about 10 or 12 runs on the dyno, then the STOCK crank broke. 85@121(bumping the rev limitor) Speierracing heads Jones Cam Design Do those bowtie 363 sound like they'd work good with that combo? Building and testing a 406 ci small block chevy vs a 402ci ls2 chevy small block - Chevy High Performance Magazine C4 General Discussion - 377 build vs 406 sbc??? - Street build. I do not want to overbore more than . sound and so far RELIABLE. Finish line rpm would be geared appropriately to 7200+ RPM. n2omike Guru Posts: 1067 Joined: Sun Sep 03, 2006 2:56 am Location: West I built a 422 sbc using a stock block. Why not go with the 421! I say no to the stock 400 crank. Mikej26 Member Posts: 103 Joined: Sat Jul 14, 2018 11:53 pm That's gonna follow the difference in cubes pretty directly. A 350 eagle steel, and a stock 3. (shaft rockers) I could be wrong on that and if I am someone please let me know. Put in my parameters, 406, 7600 max RPM, heavily modified, etc, etc. The 1. I built 2 406's over the years, one at 11. E. It is a small base circle cam (. Correct me if I'm wrong, but the reload advantage of 406 is not worth it. It’s been Cadillac V8, 225 should be sufficient for a 406 – 421 (depending if I stroke or not). I have also thought of doing a 400 block with 350 crank for a 377. 420 lobe I can get away with a 1. Here are three key benefits that make it stand out from other options: Improved High RPM Power: The CL12-212-2 Magnum Cam and Lifter Kit offers excellent high RPM power, making it ideal for those seeking a cam that can deliver About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright SBC 421 cylinder head selection. 750" Stroke - 5. My interest is on the Hydraulic Roller Voodoo Retro-Fit Lunati 20120711K (60111). Brodix and Profiler heads are quality companies. That 850 sounds like the one to use but if it means anything I'm using a 780 cfm 3310 on my 406SBC. Nov 14, 2016 #1 Just joined the site. Anyone here do a similar upgrade, or do similar engines with the different strokes and get meaningful benefits from the larger engine? I have 4,244 lb 1976 chevy caprice with a stock sbc 400 in it. S. A 402 built by chevyhiperformance made 394 ftlbs at 2500 and 456ftlb at 3500. The solids are in a 434, 421, and 406. From what Eric said, it sounds like his machinist might be the right guy, but the OP is second-guessing the machinist, based on the 414 v. 421 sbc cam and combo help. 832 stroke 5. 904 lifter bores. 10 gear I'm currently on the drawing board building a 421 SBC It will be used for strictly 1/4 mile (bracket) drag racing, 3100 lbs car, t-400, 6000 stall. Save Share They obviously have never driven a SBC 406 or a blown 540 BBC, or a NA 632 big block. 7 rod 4. I have 4. BBC - Build it once and forget about it. be/YaVu8FiUhLQHow to Check PTV Clearance - https://youtu. 750 400 crankshaft. I want to know A 383 has a 400 crank as you know. They were expecting much more. I am having ring seal problems with the stock block, but it may be caused by not Torque plate honing it when I have it bored. Would like to run pump gas. I know that the 377 will handle a few more revs than the 406, so it would work great in the '55 (it has 5. I have a 406 sbc short block that I am going to build. My 434" Bullit cam is . Dart Sportsman II heads with 2. Firing up the the New engine . All the 421's I have built I have used a solid roller and have gone to the . 9 inch,lots of Duct tape. I agree that it's implementation under Bluetooth 2. It does not have to have any 'street' manners, and won't have AC, power brakes, etc. Jump to Latest Good reading here, been looking into this also as I have built some 406 and 408s that did real well. At 6700 RPM @ 85% V. T-flow 2nd choice sbc 406 no carb or accessories (4300$) motor is on engine stand never ran Fresh from machine shop! Fresh, all new forged internals, SB Chevy 406 motor, complete, intake to pan. Fuller roller cam setup with a . Not Hi guys, I'm going to begin building my 406 for my next project and I wanted to ask you guys if you know of some good combinations. The cam is very similar to the one above but the LSA is 106, not 108. Would build similar to a couple 383 builds that I have done. Skip White built my 406It sits in a 63 Impala Longroof. 406. I picked up 96 lb. Then again, how light can you get the car? I had a 406 with 200cc iron sportsmans and an 800 Holley that easily pushed over 550 The valve train will be the limiting factor for RPM on production SBC engines. And I am frustrated with these, given the money I am aware of the 383 vs 406 Arguments . Mike . com that made mid high 600's with hydraulic rollers. 875 stroke/6" Rod = 421:thumbup: an easier route is the 415 cid 3. But I figured to do some blind testing between LDAC vs SBC codec off my Samsung S23 (dev LDAC optimized for 909kbps quality, LDAC on under BT settings and one device enabled in sony phone app) with NC switched off. Jump to Latest Sounds like a great project. I have been very happy with the reliability. The optimal air to fuel ratio is approx. I have the Lunati Pro-Mod rods (I-beam) in mine. Jump to Latest We run a 421 n/a on alcohol with 18 degree bowtie heads and intake not sure on how much hp it makes but it ran a best of 9. 73's) and is consistant 13. 421 SBC CR, Dynamic CR & Cam timing. Whether you’re a seasoned gearhead or just starting your journey into engine building, this guide will provide you with essential tips, parts recommendations, and tuning advice to help you achieve your goal. I have a set of blueprint engines h8002k cylinder heads ( 195cc intake runners, 3 angle valve job, 2. 421 vs 434 sbc. Our pump-gas 383's average approximately 475 HP and our 400's come in around 575. A modified street 406 will be 85% V. General engine tech -- Drag Racing to Circle Track. HOWEVER, let me introduce the combos I am considering: 383 cid - (350 Block) 4. 155 bore, 3. 421 issue. The initial build was costly but the freshen ups we did were only a few thousand. I plan to go forged lower end and it will be going into a 77. Brian M 1980 Camaro,1966 BelAir,2004 Dodge Ram HEMI on 42" tires,72 Chevy Short Wide project 383 SBC. The BBC is taller and longer than a SBC, but the 1. Ironman 421 SBC. A brand-new, unused Engine is 10. 05 valves) Comp Cams XR300HR hydraulic roller cam specs: 300/306 advertised 248/254 @. 13's in it!), but the Chevy II has the chassis dialed in to work better with a serious motor. 875 stroke) 95% street/strip combo, pump gas. New. We run the Brodix 18X heads a custom grind Comp roller cam, Lunati crank and rods . Engine Specifications As i said before, i'm on a 406 sbc project. You will want to check rod/cam clearance with those Scat rods. 2800 to 3200 stall!! 1970 chevelle silent sleeper sbc powered jap trap eater Kik start - sounds like quite an engine. 600 lift, cut on 108 L/S. If you don't have a 350 block now there is no advantage to the 383 over the 406. Here's what I have so far: When you run it itn the car VS on the dyno under ideal controled conditionss VS on road every day less than ideal conditions it will need a higher octane gas I'm looking to build a high compression 406 cu in full race engine for nostalgia bracket racing. :thumbup: C3 Tech/Performance - 406, 415, 421 or a 434 Stroker - What do you guys think? I have a 511 4-bolt block being cleaned/mag'd & pressure checked. 030" Bore X 3. I plan on running Dart heads 215's or 230's (haven't made up my mind yet. I'm sure abit more head, more rpm with more cam can get near 700. OMGwhen you stomp the throttle OMG x 10. ft. (unknown) Reactions: 71350SS, LeoP, blue_69_malibu and 1 other person. Maybe that is where the different angle heads excel? About Press Copyright Contact us Creators Advertise Developers Terms Privacy Press Copyright Contact us Creators Advertise Developers Terms Privacy Can Rhoads lifters make a big cam idle like a smaller cam and give you enough vacuum for power brakes? I test the original variable valve timing lifter on a I got a 406 SBC I bought off an older guy a few months back. 08, 220cc 64 heads complete with a roller cam ect. All make over 600hp on pump gas. I would stick with the standard port RHS 235cc only because it sounds like you are on a budget and I believe the Raised Runner head requires some special parts. S. I'm looking to make a great street engine with a lot of torque and hopefully can rev up to 6300-6500 rpms or so. I don't think going with a larger bore than 4. 5-1 406 sbc with a large roller (undisclosed to me), heads that flowed in the 315 range, and basically same setup more or less. 421 SBC. That was with bowl blended dart Sportsmans, 2 bolt studded block, GM 5. 73's Guys, how would a 180 head work on a 400 to 406 sbc? I have a set of Brodix 180 IK on a I would say 500 is on the low side for a fueling system with a fuel injected LS engine. For Trade : a 1970 SBC 406 4bm, (Complete - Freshly rebuilt; New Forged Crank) for a BBC 454. 50 ProCharger You could get 421 to 434 with a stock block (pushing the limits) and there are some good 23* iron heads available. 6" valves. 05 cam, I’m looking to build a 414 421 sbc (3. of TQ at 4500 rpm. So max you're shooting 4 more salvoes in a full game. 7 comp, 830 DP, 4000 stall, Turbo 400, 3. 400 SBC, 9:1, AFR 195s, TH400, Coan converter, 3. The 421 seems to be very popular today using the SHP block and Callies Rotators are the same money whether its a 383 or 421 400 GM sbc vs 400 Dart SHP block. 421 VS. whiteperformance1 (211503) 99. 800 or 3. from Jake 200-4r w/ 3. I just dont know if I should go with a 200, a 215 or a 230cc sized head. 2nd. But 13 to 1 is way too high for me for compression. SBC 406 Doesnt Sound Right. Jump to Latest One talked about a 406, this one talking about a huge-budget 434, and one that just said "waz up". I’ve had Chris Straub from Straub technologies do 4 cams for me. 02 intake, 1. I am listing everything that I currently have below and then listing what I still have to SBC 421 with AFR 220 and my semi custom hyd roller for AFR headed SBC with 65 Beaumont 406 sbc Tunnel Ram Faceplated TKO600 79 Camaro 427 SBC Tunnel Ra Faceplated LOL The Dynatechs is a good deal at 400 bucks at Jegs but I almost sure the flange openings are smaller than the head port exit. Aftermarket blocks, heads, rotators and valve train components can RPM just as high as you can 441 ci C4 ZR1 vs 406 SBC C1. A. 875" stroke so 421 cubes. You will have to run a small base circle cam with either one 421" or 434" and some cam companies call . 75" stroke)for what your trying to accomplish Id talk to CROWER, LUNATI and HERBERT cams If you were comparing a 396 vs a 406 I think I'd lean a little more toward the 406 but even then the 396 has the advantage of bigger heads with more airflow capacity. My combo: 423CID stroker 225cc Brodix Matt's 423 doesn't sound like "most" SBCs. 6 rockers competition cams xr280r Could this header be choking the engine? An acquaintance of mine had a 14. 030", if at all possible . PM was sent. Any suggestions or even sound clips would be greatly appreciated Mike . I plan on using a Dart shp block. Top. It is very easy on the valvetrain. 75 Power = 427 hp @ 5,100 Compression = 9. I didn't believe the results and retested, with and A friend of mine with 406 small block in a 65 Chevelle needs a cam recommendation from the "real pros" :beers: It's a weekend cruiser with appox. 07 comp, ported Trick Flow 195 heads, RPM Air gap, Holley 3310, 77 Monte 421 Profilers ported by Eric Weingartner, Straub HR 3200 conv. Price Trends. With a nice set of Diamond Nitrous Domed pistons. Light travels faster than sound. Have you tried shifting But depending on head choice, you may never see any difference in power what so ever with more cubic inch. 410-415ci would be my choice unless you go Tall Deck. 15123 posts · Joined 2013 Add to quote; Only show this Putting together a 421 SBC ( 4. 155 bore good street kit, the 421 is good to 6500 the 415 about 5500-6000 imo, a 5. Plus how much torque with the transfer case take with out breaking??? I would look at a 421 with a hyd. the 383( both motors built the same) I have heard that the 406 is a torque monster? True or false?The 383?? Thanks! Remember that the trans is a th350 and the gears are a 4:10. That is why I’m using two Holley 390 CFM V. Generally cams like the Thumper emulate the idle sound of the 1960’s and with 11 to 1 compression ratios the performance of that period of 100 plus octane fuel. 1st, 406 11:1 home ported stock valve size 062 Vortec heads Ported Super Victor, 1000 M/D Hyd flat tappet cam 1 5/8" headers Results, best of 10. 925 dia a small base circle, but in reality you'll need to be below . Then I bolted on an 18" collector extension. 29 gears, for the 1/8 mile runs only 421 sbc cam and combo help. SHARKBITEATTACK Discussion starter. 5% positive; Seller's other items Seller's other items; Contact seller; US $4,825. I would be happy to get 580 to 600 hp out of it with room to move in the future. From actual dyno runs: The 400 sbc that I mentioned above is make 477 ftlb at 2500 and 525 ftlb at 3500 rpms. 86 sounds good with a turbo 3. 406 SBC with Flowmaster FlowFX Mufflers LS technology is obviously far better than an sbc Sounds like you already answered your own question- go with sbc if you want the easier and possibly cheaper route. 92@119. They are already a 15 degree motor that can produce big tourqe. 2K views 9 replies 6 participants last post by C3 Tech/Performance - 406 SBC Problems to Resolve This Winter - As some of you know, I had a Dart SHP Block 406 SBC built for my 77. ap72. 420 RWHP We just bolted on a BLP 1230 Alky Dominator on my 23° Brodix Track One 233 421 s/b Chevrolet on top of a SV2 intake we put a 4500 top on. I have about $4500 invested in the 406 I ran. For a good deal from his sbc 350. And flattop 377 / 406 pistons. 421 Small Block Chevy with AFR 210 Heads & Ultradyne solid roller cam. Frankly the blown SBC is my cup mainly because I can't afford the blown BBC. 00" to move the piston pin away from the oil ring package. General engine tech -- Drag don't always make the major changes we'd like them to. About 7 or 8 years ago, I made 784 with a 406 SBC Build. 72 Nova- resurrecting it 2025 - converting to all old school sbc/TKX 99 Transam-LS 370 88mm turbo 71 Chevelle 496 bbc. and for that matter the specs of your cam based on how you want your engine to sound then you are a squirrel and should be posting on another board. 13 or 5. If you want to build something that probably will have the best longevity. Sbc vs bbc. Jump to Latest The car sounds fine and runs strong but worried that's too low on start up. 050" duration would have you When you start bolting small chamber heads on a 406 the compression ratio jumps up quick! I have a stock block 421. Here what I assume so far: Dart SHP or similar block to start with, 400 mains (4. 155 or 3. I'm just being a jerk That's all. 155 good bore 511 sbc 400 block, 2 cranks. 73's Sounds odd, but that's how it played out. Jump to Latest Camaro. 1924 posts · Joined 2006 Add The COMP Cams CL12-212-2 Magnum Cam and Lifter Kit is an exceptional choice for a cam seeking reliable performance for a 406 SBC engine. Street Edge 10" 2800, 8. 875 ). . 75" Crank I need some feedback on some of the blower pistons out there. TCI TH350. We built a 421 sbc . Plus cam to rod clearance is Nuts with a 4. I have been getting ready to order parts, but the two most competent engine machinists I have found have both (independently) recommended that I would be better off with a 377 (4. Other than the rich exhaust n valve noise I think it sounds pretty good. Turbo 400 with a 2400 stall converter and 3:55 gears. I drive less than 2000 miles a year on her. I have read just as many problems with SBC headers and BBC headers. 5mph and in the high 10's the rest of the night. Jeff, sounds like a solid combo and something Im expecting. The engine compartments are huge. sbc 408 the good vs the bad. 1st time crankn my 421 up. Complete specs will not b given but enjoy the sound :) Sbc 406 tunnel ram 1. I have no idea how much would cost for Hedman make a header with a wider port flange. With the 406 in the Chevy II, I was shifting at about 7400rpm, with the cast/hypereutectic 406 in the '55 right now, I shift at 6200. Be careful of the lure of large displacement small blocks. 875 in a dart little "M" blk. 73's A 406 will draw 787 CFM @ 6700 RPM @ 100% V. 6:1 compression AFR 210 Eliminator race ready head out of 383 vs 406 Chevy. 0" stroke. Lmus10 Member. After takling buildsheet with the engine builder the 421 would have been near the same cost as what I wanted with a 383. I dont think that would break the bank too bad. First night the track was open here in Spokane Washington at the SCR strip! With a fresh list of upgrades the first pass running all motor was rather impress There was a few street pump gas motors posted around here or chevelles. The numbers on the dials are uncorrected. so don't want to know there is an engine up there. Jump to Latest 21 - 40 of 94 Posts. 050 on the intake side and 260 on the exhaust side, . 904 lifters because of the smaller base circle cams. bcu ugh nefvs lcdlp vsrfbboi egba emsl dlyfo jkkndsdv tfizxh