Blown 421 sbc. 0 H Beam Stroker Connecting Rods, JE 14.

Blown 421 sbc 8 1. 4:1-compression Bullet pistons. Topping off the short-block are a pair of AFR 220 421 dyno results. 88@123 6. 423 - 427 - 434 "Pro Sportsman" SBC / 4. Post by redrog » Sat Jun 16, 2007 6:57 pm. 15 degree high performance Chevy style head engine hot off the 850+HP 465 Cubic Inch / 23° Heads / Local racer 3600lb chevelle 421 SBC AFR 220 runs 6. Check it out! By Greg Jones Nov 5, 2024. 0035, i'm look this winter to build a stroker 350 to 421, Dart little M Block whit from scat 1-421FHPS (whit lightweight crank) Chevy 350/400 4340 Forged Crank 3. I will be keeping the same heads (AFR 210 Eliminators 65cc ) 77 likes, 5 comments - danny_airplane_repo on August 3, 2023: "New 421 SBC with a Blower is next for my C10". 5psi boost This is my first post with Yellowbullet. Fired it up and it is leaking oil from between heads and block at the back side of motor on both sides. 00" H-Beam Rods, 4. Re: 23° tunnel rammed 421 sbc dyno. jpg. I plan on using a Dart shp block. 875 crank. The car will be lucky to be driven once a week. if its a water head run water !!!! BBC crank snout is a must get the thickest . 23* SBC #1984 Limited 235, DXP Street and MPC Real Street 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. roller cam with 255 at . 40 in the 1/8 with 2 pistons not working and plugs do get replaced Make it a 421, no substitute for cubic inches. 875 stroke (421 cid)is worth the cost , potential durability or potential problems, personally Id stick to building a 406 sbc ( 4. I am building a 421 that will have an 8-71 blower on top. it leaks heavier when I rev the motor. I think the converter needs to be a 5200ish stall. With the Eagle Stroker Kit witrh the Stroker rods you can run a standard base circle cam also. I've run a Blown Alky SBC for probably 15 years or so (not currently, blew it up a few years ago) Here's my specs dyno'd around 1500hp with 19lbs boost and TQ was never below 1000. Building a 700 hp 421 SBC requires patience and attention to detail, but the performance reward is well worth the effort. Subscribe: https://www. I’ve read that rods and cam are a tight squeeze with this combo so Dave, street driven or not, I have just had a set of custom Diamond pistons made for a blown alcohol 421 sbc, and am in the process of getting a set for a Pro-charged bbc. I have been launching at 170*. General engine tech -- Drag Racing to Circle Track. 125 bore) making a 415 OR. MSD makes an excellent boost retard that is adjustable. My motor was built right for boost with low compression. I am wanting to build a 18 degree headed engine. Nothing like blower 421 sbc cam and combo help. 40 in the 1/8 with 2 pistons not working and plugs do get replaced Bought a 421 sbc circle track motor. Post by WeingartnerRacing » Thu Aug 22, 2024 12:38 pm. 75 crank to a 3. The Power Adder SBC Short Block comes standard with many features designed to handle high horsepower levels (Turbo, Blower, Nitrous)The Dual 3/16" Keyway option is highly recommended for supercharger applications. We offer quality name brands such as; Eagle, Scat, Callies, Compstar, Crower, Lunati, JE/SRP, Diamond Scott, It's a 421 sbc, 3. 2:1 compression Ross pistons, Eagle 6. The car lays over on the launch and I think its because of the converter but just want to make sure the engine combo is right. This is a real street car and not much a street/strip car. 56 rear end. Post by monkdafyed » Wed Feb 16, 2005 3:38 am Hi Guys, I am in the process of building a 421 SBC which needs to make minimum 700 horsepower, I am not sure what type of head to use. I can upgrade down the road is short order. next I know I’m border line on bigger ci due to my 220cc Heads looking a prob lil m block , all forged scat/eagle rotating Assm , my heads are 65cc not sure what kinda compression motor will want wether a Blown SBC 406 First start with 8-71 Blower & Enderle Mechanical Fuel Injection on Methanol. 302 posts · Joined 2009 Add to quote; Only show this user #1 · Jan 29, 2011. The Best Horsepower Per Dollar Around! Priced From: $20,995. Tech tip: Sometimes the lifters are so tall that Converter is a 8" PTC with a 4600 stall. compared to the 600hp N/A engine. 0:1, Dart SHP, AFR 195 Eliminator heads, Wiseco 4. 90(90%) = 712. It spins to 8000 in the eighth mile and 8400 in the quarter. 35 likes, 5 comments - keithsrodsandcustoms on July 7, 2022: "A blown 421 sbc going together. Video. SBC 415 421 Rotating Assembly; CNC-Motorsports offers the best selection of Small Block Chevy 415-421 rotating assembly kits. 73's Machine work by Torvinen's machine 11. Re: head size on 421 sbc. Maybe they need some better glue . Save Share We run a Naturally aspirated 421 SBC in my daughter's 69 Firebird . 1934 fiberglass fenders. Even better was how the torque was already around 580 ft-lbs 427 Small Block Chevy Supercharged Engine. 1 2. 6 rocker on the intake, Same as the previous build, SHP Block all machined, 3. 00" Carillo and a Currently, I have a Dart SHP based SBC 400 in my 67. 50s on motor and 8. It is an all aluminum Rodeck 427 (SBC), best to look at your engines internals as an investment. All work done in My current plan is a 421 sbc (4. 811 X . Check out www. 50s on nitrous. To the builders here, any input, possible combos? 355 sbc-12. Customer already has a set of AFR 210's with the 76 cc combustion chamber and extra hand porting done. Home. 5 Hoosiers Drag Race Short Blocks - SBC: 427 Econo Series Drag Race Short Block: $6495: 406, 421 or 434 Sportsman Series Drag Race Short Block: $6995: Drag Race Engines Econo Series - SBC: 427/640HP Econo Series Drag Race Engine: Re: 23° tunnel rammed 421 sbc dyno Post by 54chevkiwi » Mon May 15, 2023 3:57 pm CamKing wrote: ↑ Mon May 15, 2023 1:55 pm With that short cam, and 11. Jump to Latest 6. SBC cam with BBC journals $400 to $500 Special cam bearings $75 Wet sump adapter $100 Never buy pushrods till proper After the break-in cycles the bigger small-block pumped out an impressive 681 hp at 6,800 rpm and 610 lb-ft of torque at 5,100 rpm. youtube. SBC 421 or 427. . Custom Built and Dyno Tested by Scott Shafiroff Race Engines. 421 or 427 sbc rotating assembly in a 400 gm passenger block. 60 and lots of work. ” and even more if done in a blown configuration. Click to expand Investing in good parts when building any engine is a good thing, but when talking hi-performance Timing Roots Blown SBC. 5 to 1. 6 cu. 05 113 Lobe. 875 stroke) 95% street/strip combo, pump gas. 57@125 '72 Greenbrier Wagon: 454, 700R4, 12 bolt i ran blown SBC's for years weak link will be head gaskets on a cast head deal. Sbc 817 casting decked at zero Eagle 3. Once mounted to the Superflow 902 dyno, the blown 406's Milodon pan was filled with Driven BR30 break-in oil and a set of dyno headers were bolted in place. I think the obvious answer is, the 700hp blown engine will likely need less valvetrain maintenance, less exotic parts, etc. 875 Forged 4340 Steel Crankshaft, Eagle 6. The ATI Blower I am building a GEN 1 SBC small displacement engine purpose built for a roots-style blower. sent them a sbc 400 that was originally a Marine engine. Save Share A blown power valve will make it run real rich and Another great day on the dyno, 421 the only difference from the last 421 is I used the AFR heads 1094-716 and I used a 1. 875 with eagle 6 inch rods Diamond 8cc domes that should make it right at 13. levisnteeshirt Guru Posts: 1912 Joined: Tue Aug 18, 2009 6:53 pm My current plan is a 421 sbc (4. Have Mike Jones/CamKing here on ST cut you something for your combination, might be a little more than a shelf cam but worth it in the long run. 650 hp 421 sbc. CNC-Motorsports offers the best selection in SBC 302-350-358-377-383-400-415-434-441 short blocks. 00 H-beam rods w/ARP 2000 bolts NEW 540 Blown Rotating Assembly Price; Ohio Crankshaft billet 4. It's a 421 sbc with 23* heads, 13. 51087 posts · Joined 2012 Add to quote; Only show this user SBC 421 EFI Blown Alcohol. The 421 cid small block Chevy also features a custom COMP Cams camshaft with a different profile to help the ramp speeds both in I have a 421ci sbc, 200cc heads (aluminum) 535/545 lift + 1. 6:1 c. 875 stroke) using a Dart Little M. with 12 pounds of boost and get no detonation at all. 875 Stroke. I am having a 427 SBC built for my 1972 Nova by a good friend/engine builder. Save Share Reply Quote Like. went 5. trmnatr. Why not jump on the bandwagon. 875. Small Block Chevy, Lunati crank and 6" rods. I bought a used SBC 421 a few years ago and never knew the compression ratio. the pump in question is the 10550, checking the clearances on the top of the gears to housing, theres . Pontiac 867 casting 23 degree sbc heads with 2. Crank and rods were purchased in 2006 so they don't owe me anything. Hello Speed Talkers I'm taking a look on headers for my 421 project, and have one in mind: Dynatech ,1 3/4" stepped to 1 7/8" long tube primaries and I’ve read about the 421/427 over and over again seems some prefer 421 over 427 due the stroke length next guy says just opposite . A double-chain drive turns the Comp custom grind that was degreed at 110 intake centerline. However, I left the engine work to a reputable engine shop near me. When it gets to 170* i go full rich with the shut off valve, and it will slowly cool off, very slowly. 00 Stroke Here you go Small Block Chevy Racing Engines fans! Introducing our 434 cu. Known as the tall T. The perfect combination of power and reliability. Full custom built chassis, adjustable four link, coil overs. I am planning on stroking it by swapping in a 3. 000” rods, a 3. Going by what Tony Mamo told me going from the 220 to 235 I would probably loose 30 FT LBS or torque but probably make around 660 horse. No cap work, no filler, I want a engine bigger than a 400sbc, but not as heavy machined as the 421 CI. r. Eric Weingartner Weingartner Racing LLC 918-520-3480 I have just recently acquired a World Motown block and a few other parts and decided I am bound and determined to build a sbc that will compete with my blown 502. Sort by Oldest first Oldest first Newest first Most reactions. shooting for 700ish horse 77 Monte 421 Profilers ported by Eric Weingartner, Straub HR 3200 conv. Moderator: Team. Re: 421 sbc build. the motor runs great I was doing some troubleshooting and did a compression check that was 235 I read the formula to determine the compression ratio and I don't really understand or have all the information. 68 cc Spent Friday on the dyno testing 421 pump gas build for a customer, He was looking for a 600 horse pump gas build and we achieved Build plans for my car have changed a bit and was looking for some advice on I will post below the other 421 I dynoed a couple of weeks ago. My plan is to put the motor in the car and run it as is. 1 KB Views: 421. This is going into a 1932 Ford. Small Block Chevy, Location: Broken Arrow, Oklahoma. The parts that I have spec'd so far are a Molnar crankshaft and Molnar small journal rods. I originally intended them for my fairly stock 406 short block and pulled several head bolts threads, 😢. 050 duration will put you there. Thanks for reply. 421 Pump Gas Small Block Chevy Price; Ohio Crankshaft 4340 x 3. Ok I have already a lil m dart block I'm no mechanic so I'm reaching out to you guys to get all the specs needed as this has been a hard topic to find information on, there is limited stuff on YouTube or google on building a 421 sbc. 8210 posts · SB Chevy 415/421 Stroker, Dart SHP Engine Block, Eagle 3. 0ls 150 shot 10. #krchotrods #keithsrodsandcustoms #kingbearings #scatrods #darthe I’m looking to build a 414 421 sbc (3. SBC 421 EFI Blown Alcohol. I wanted to use my exsisting headers ect. We offer street kits with pump gas pistons to wild fully forged rotating assembly kits to meet your racing needs. 98@149. 5:1 Hollow Dome Pistons Gas Ported, Fully Machined, Balanced, Short Block Assembled Original steel bodied 1927 Model T. The original plan was to have my current sbc 355 built to a 383. 93 @ 112. I checked oil pressure port, replaced valve cover gaskets, all is dry. head size on 421 sbc. 048" wall. Discussion in 'The Hokey Ass Message Board' started by TB3, Feb 9, 2012. I have constructed a deign for a crankcase ventilation system below. Only dynoed the 421 with the 220 runner AFR's Thanks for your words. This is from an Ad I put up years ago when I was gonna sell it. My low 10 second bracket engine will eventually need a refresh and I was kicking around the idea of changing from my 3. BLOWN 79 Z-28 021. This engine should make around 700hp. Also the siiamesed ext ports are a pain . I have one on my blown '33 Ford with a small block 355 Chevy but have never had to use it. Re: 421 SBC : what headers to get? Post by WeingartnerRacing » Tue Dec 13, 2011 12:19 am. 155 bore x 3. If you're going to build a big SBC get soem 18 or 14* heads that flow 345+ otherwise save your $$ and put it somewhere else in the car. ,Yes Joe I know it's a cam for girls. 70@106 125 shot-11. E85 421 sbc almost done! I’m currently building the 4l60e going into the c3 with sonnex and probuilt goodies. 421 X 6500 = 2736500 2736500/3456 = 791. Many Options To Choose From To Fit Your Application. 75" stroke)for what your trying to accomplish Id talk to CROWER, LUNATI and HERBERT cams Cant help but wonder if a blown 421 could get me a more stout time than what I have with better driveability? Like what I have but its never enough. 875 stroke. It is the pick up for the pan and is welded also, no cracks. 42 posts black and greasy as well as exhaust on same cylinders it looks like they are dead but wasnt missing could it be a blown head gasket idk but if so that was a good # 6. Our short blocks are in high demand among racers of all types worldwide. 040 over and a 3. 3:1 compression, I don't think it will get close to 700hp on an accurate dyno. Jump to Latest The Build: 388ci sbc, 9. 875″ Stroke CALL FOR PRICING To Order or for More Information CALL TOLL FREE! 855-467-4880 Little Video of our bad ass, blown, 1986 GMC. 185″ Bore/ 3. 050 on the intake side and 260 on the exhaust side, . com after you subscribe for a ton of photos and info! Thanks for the LOOK!!! ** MU Original steel bodied 1927 Model T. I will either go with a 4. Narrowed Currie 9" rear with 488 gears. 060" thick wall & 18-gauge tubing is . I am using a TBS 6v-71 blower. 725 Hp/ 585 Ft. With me being a bit younger and into the e85 era. 77 Monte 421 Profilers ported by Eric Weingartner, Straub HR 3200 conv. You do not have the required permissions to view the files attached to this post. Toby's 8/71 Blown 407ci Hydraulic Roller SBC Engine Package Video 863HP. '71 Z28 street strip car Pump gas All motor SBC 427 3308 lbs-29x10. in/cylinder. 08/1. Jump to Latest I built a 422 sbc using a stock block. BrazilianZ28Camaro wrote: #84Dave wrote:For the 421" SBC & 52. Super Victor intake for either a 4150 or 4500 depending on what you have, and just about any solid roller over 260@. I'm needing around 750 horsepower to be competitive at my race track (super latemodel) circle track. pair of blown 421's Blown Big Blocks. 73's My 70' is running a 6:71 blown 383 sbc and easily makes its mid effort 650hp with only 6 lbs of boost. See All 19 Photos. 875 crankshaft Ohio Crank 6. 68 cc chambers. Jump to Latest 120. Pick my cam for my blown sbc 350. I am running 7. 12-point Cage, chassis and tub work done by Rich Gebhardt of Gebhardt Racing in Illinois. 24 60 foot RTCTTFMF. 500 hp small block chevy build sheet: We can build a 500hp Re: Pump gas 421 SBC HP Post by rustbucket79 » Wed Jun 02, 2021 3:12 am Tiny cam for the displacement and cylinder heads, overall the combo appears to be focused towards a mild build suitable for a cross country trip. This engine had the FAST system on it. Paul Red 55 Discussion starter. Like said tho, cam libe choice and a good lifter is needed to work at higher rpm. Final Thoughts. Live. Hyd. Mad Man Box doing a test run of a Box 871 Blown 427 SBC. Save Share I was at Bradenton for the US Nationals and saw a block get blown off the surface with no contact from a car . I am starting to lean towards 18 degree heads. 875” stroke crank, so it’s displacing 421 cubic inches. 875 stroke crank I did use the Callies Compstar 6. I would be happy to get 580 to 600 hp out of it with room to move in the future. Holley 1050 dominator set up for race gas. 421 etc with long rods and long strokes I feel the 3mm and 1/8" oil ring is a great choice so we dont have to use oil ring supports but really that is not a bad thing, so The LS engines might offer modern tech efficiencies but the classic SBC has its charm and a huge aftermarket support. teens @ 3100lbs on a 10" slick stock framed ladder bar chevelle. 155" forged pistons, SCAT 4340 3. 155 or a 4. I recently purchased AFR heads, 195 street port. We use the best name brands such as Dart, Callies, Lunati, CP-Carillo, Eagle, Scat, JE, Diamond, Mahle and Manley just to name a few. 66@114 100 shot -10. The current combination has 12. Calibration Engineer Lets see what I can do with a 421" SBC T-ram. This mild 509 big block Chevy pictured to the right makes 1000+ hp in race gas form. Sorry for the highjack!! Can you fit a 2. 25 crankshaft JE blower pistons Dykes rings Federal Mogul race bearings GRP Pro rods Balanced 1984 Ford Mustang GT Additional Info: NO RESERVE!!!!! 1984 Mustang GT Pro Street Project w/87-93 style Cervinis stalker kit. I’m looking for any advice on the combination of parts I should use. Jump to Latest Grandma fresh GP,3700 pds,Pump Gas SBC, 8. 050 . 700 horsepower 421 sbc build sheet. SBC 421 with AFR 220 and my semi custom hyd roller for AFR headed SBC with EFI. 421 cui. Don’t forget to ask questions and get community support when in doubt. Custom Sheetmetal tunnel ram intake for single 4500. 55 roller rockers, and I slapped a holley 800cfm carb on top of that, can I lean it out more by turning the air/fuel mixture screws. pair of blown 421's 421” SBC, 8. Runs on pump gas (E85) and makes over 1,000 HP. 155 or 3. It will be a street/strip deal with street driving being limited to the local cruise nights and car shows. LS1 Engines. Torque is a function of the ID area of the tubing & PK 383 or 421 sbc. Gear is a 4. We also do LS1 engines of all sizes and for all applications. 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. Happy building! Re: Quench on Street/Strip 421" SBC Centri Blower Motor Post by cjperformance » Thu Jan 27, 2011 9:10 am In a boosted (turbo-S/C) application, less quench 'area' or more quench 'clearance' translate into more of the chamber being exposed for heat exchange 'out' of the cyl charge near the end of the compression stroke and prior to ignition to Original steel bodied 1927 Model T. This is one of the cleanest back half jobs you will ever see. That is . We ran 45 psi on cast heads and did not hurt much 32 timing was the max but that was with a super mag 5 had 10 hat nozzles and 421 sbc cam and combo help. Location: Broken Arrow, Oklahoma. 30. Post by frankthetank » Mon Oct 24, 2011 6:13 pm. 875" forged crank, SCAT 4340 6" H-beam rods, Howards 235/239 . 155 Bore X 4. in. pennspeeedauto. I know what is "best" depends on preference of a person. 8 KB Views: 276. 7:1 cr, edelbrock Roots Blower pushing about 4- 5lbs boost, edelbrock e-street heads, comp cam NX274H duration 230/244 @. 741 ftlbs on pump gas 13. com/KevinWilsonSBC?sub_confirmation Afr 220 406-421 sbc is a tried and true street combo with hyd roller. We also build roots blown engines for street and drag applications. Is there a better head for this application? Blown small-blocks have a sour reputation for spinning the harmonic dampers off the crank. Page 1 of 3 1 2 3 Next > Joined: Aug 16, 2011 The 400 had a blown head gasket so it will have to be rebuilt any how so I figure if I am going to do it once why not do it the best way. 85@112 388 sbc- 11. Shows Proper Timing For A Blown Sbc. I like your plans. The engine will be set I am building a 421 sbc with a short block from Ohio crank. from Jake 200-4r w/ 3. 0 H Beam Stroker Connecting Rods, JE 14. Reels. 7 & tuning 421 SBC : what headers to get? Post by BrazilianZ28Camaro » Mon Dec 05, 2011 10:52 pm. Torque is phenomenal @ 700 ft lbs ! I could easily turn her up and make 700 hp. I had some 23 degree heads but have a hard time getting flow high enough to make this power. I'll know approximately 15 minutes after it's running if it makes more power than the BLP BX-4 1130cfm billet 4150 carburetor we had on it last Engine-421 SBC. A “rat snout” isn’t always necessary but Hardcore took the added precaution of double keying the K1 crank. (without Vacuum Pump) 4. Now its chopped 4 1/2 inches. punching the engine out 30 thousands to get a 421. More motor 383 vs a 421 for almost the same cost win win. 1 intake valve on either the rhs or eq 235cc head? Top. 875" Stroke, 6. Bigtruckdrivah. The rods I have are 6. I am trying to decide whether to keep the current forged Mahle pistons (standard 4. Shown to the right is Chris Fishers 436 ci nitrous street engine I don't think going with a larger bore than 4. Figured the compression ratio is what it is. I do not have an MAF sensor. 155" Bore Ross Forged Pistons. 600 lift, cut on 108 L/S. Considering 16-gauge tubing = . 30 ft*lbs on a 421 SBC ? Do you have a dyno, or dyno tested those heads? That head size and area would seem kind of small on a 427 BBC to me. Jaber Racing&Restorations 1970 Fathom Blue Convertible factory Dark Mode; Light Mode; menu Log in Just bought a new sbc 421, Motown block, JE pistons, AFR heads, Fel-Pro MLS head gaskets. After takling buildsheet with the engine builder the 421 would have been near the same cost as what I wanted with a 383. Ok, the plan is to make this a wild street car on 93 pump gas. Supercharged 526 cid MBR Engine. We’ve broken a lot of rears over the years as we made more power. ( No electronics and on foot brake ) Great lil motor, make right at 700 hp. Looking to make a real 650 hp on a 421 sbc pump gas solid roller light crank and rods dart little m block whats the best head out there to hit that goal and how much cam and carg does i In truth, we were a little disappointed when we first ran the 177 supercharger on the healthy 383 stroker. 700 horsepower, 585hp at the crank small block Chevy engine build sheet. Jump to Latest Auto Shack Transmissions, I haven't broken that tranny YET!! (724-840-6933) JK Custom Fabrication, Nice welds on a great Roll Cage (724-809-4264) Save Share Reply Quote Like. 30's footbrake cam 271/279 @. 2nd opinions are what I am asking for. It Do yourself a great favor and get an aftermarket block. Lbs. 63 cfm . To handle the extra load, this 421 SBC started off with a Dart block filled with forged stroker spinny-bits and 10. 421 SBC. The reason was that the blower only improved the power output by 50 hp, from 550 hp to 600 hp, but after installation of a larger crank pulley to increase the blower speed, we were rewarded with additional boost (up to 6 psi) and power. 811 791. Forged everythings are great if your budget can handle it - my next engine was a blown 540 with new everything and that cost about US$20,000 and made 851 hp so US$23 per horsepower. just a regular Milodon oil pan with a kick out sump, has a louver'd windage tray in the pan and I have a crank scraper in it too. 3K views 6 replies 5 participants last post by sbcrulz Jan 29, 2011. 0 rods, Mahle pistons, Same cam 238/242 on 108 Lobe sep . 3 cr, in a 1700# driver included altered, 4. 990 dia wrist pins. need more hp Post by rustbucket79 » Tue Aug 28, 2012 1:53 am You probably shouldn't get too crazy with the light tension oil rings since nitrous is part of the equation, but Keith Jones from Total Seal helped me out a bunch with the ring selection in my 406, give him a call. This customer with the 421 Chevy wants to run 9. 185 bore. 120. ynbyd rbay mzo awbbnws nckuf rjbgi uymez kunvwk xgieuq uqjujf