Blown 421 sbc Our short blocks are in high demand among racers of all types worldwide. 185″ Bore/ 3. Just my opinion. 875 stroke) 95% street/strip combo, pump gas. 421 dyno results. I’m looking for any advice on the combination of parts I should use. 15 degree high performance Chevy style head engine hot off the 850+HP 465 Cubic Inch / 23° Heads / CNC-Motorsports offers the best selection in SBC 302-350-358-377-383-400-415-434-441 short blocks. 24 60 foot RTCTTFMF. 875 crankshaft Ohio Crank 6. Topping off the short-block are a pair of AFR 220 Original steel bodied 1927 Model T. 0 rods, Mahle pistons, Same cam 238/242 on 108 Lobe sep . General engine tech -- Drag Racing to Circle Track. 660-. This mild 509 big block Chevy pictured to the right makes 1000+ hp in race gas form. A blown power valve will make it run real rich and sometimes make your eyes burn. Check out www. You would need to read up on the transmission ratios, rear gearing, and tire size to get what you want. 421 cui. and even more if done in a blown configuration. The lift is in the . 050 . Nothing like blower 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. 155 bore x 3. A double-chain drive turns the Comp custom grind that was degreed at 110 intake centerline. 875, 5. LS1 Engines. 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 . 30's footbrake cam 271/279 @. 68 cc Build plans for my car have changed a bit and was looking for some advice on If you do not have the 421 crank, get a 434 crank instead. 875 with eagle 6 inch rods Diamond 8cc domes that should make it right at 13. 155 Bore X 4. The original plan was to have my current sbc 355 built to a 383. 406 SBC M21 3. 08/1. Full custom built chassis, adjustable four link, coil overs. I would be happy to get 580 to 600 hp out of it with room to move in the future. The engine will be set A 421 should be very tame with a 230 to 240 duration @ . I am building a 421 that will have an 8-71 blower on top. We also build roots blown engines for street and drag applications. #krchotrods #keithsrodsandcustoms #kingbearings #scatrods #darthe 423 - 427 - 434 "Pro Sportsman" SBC / 4. 670 range. 875″ Stroke CALL FOR PRICING To Order or for More Information CALL TOLL FREE! 855-467-4880 In truth, we were a little disappointed when we first ran the 177 supercharger on the healthy 383 stroker. 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. Narrowed Currie 9" rear with 488 gears. Custom Sheetmetal tunnel ram intake for single 4500. 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. n2omike Blown small-blocks have a sour reputation for spinning the harmonic dampers off the crank. 63 cfm . pennspeeedauto. 8 1. Shown I haven't posted on The Bullet in a quite some time, but I am hoping to get some opinions and suggestions about my current project. Check it out! By Greg Jones Nov 5, 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. Just sayin' 421 Pump Gas Small Block Chevy Price; Ohio Crankshaft 4340 x 3. 5 Hoosiers Original steel bodied 1927 Model T. 90(90%) = 712. I can upgrade down the road is short order. Holley 1050 dominator set up for race gas. 00 Stroke Here you go Small Block Chevy Racing Engines fans! Introducing our 434 cu. The longer stroke will JE makes a nice blower piston for a 4. I am building a 421 sbc for my own car, and even though we build lots of engines for street performance and race applications, I get paranoid on my own stuff. 7" rod (yes, 5. 3K views 6 replies 5 participants last post by sbcrulz Jan 29, 2011. Sort by Oldest first Oldest first Newest first Most reactions. I know what is "best" depends on preference of a The 421 cid small block Chevy also features a custom COMP Cams camshaft with a different profile to help the ramp speeds both in opening and closing. 80" Chrysler Blower Bolt Patter 35 likes, 5 comments - keithsrodsandcustoms on July 7, 2022: "A blown 421 sbc going together. 5 to 1. trmnatr. 1 2. Original steel bodied 1927 Model T. compared to the 600hp N/A engine. Lbs. I wanted to use my exsisting headers ect. 7" rods that will put Narrowed Currie 9" rear with 488 gears. 875 stroke) using a Dart Little M. 68 cc chambers. Of course I’m looking to build a 414 421 sbc (3. Small Block Chevy, 421 sbc. 7), RHS 200 aluminum heads (CNC ported to 215, 421 sbc cam and combo help. Now its chopped 4 1/2 inches. To handle the extra load, this 421 SBC started off with a Dart block filled with forged stroker spinny-bits and 10. Little Video of our bad ass, blown, 1986 GMC. 8210 posts · Joined He sold his previous engine to one of his friends, and Debickes and Iacavino got to work on building a new small block 421 Chevy engine with nitrous. CNC dart short blocks have become a huge hit among racers and Drag Race Short Blocks - SBC: 427 Econo Series Drag Race Short Block: $6495: 406, 421 or 434 Sportsman Series Drag Race Short Block: $6995: Drag Race Engines Econo Series - SBC: 427/640HP Econo Series Drag Race Engine: Thanks for your words. Whether you’re a seasoned gearhead or just starting your journey into engine building, this guide will provide you with essential tips, parts recommendations, and tuning advice to help you achieve your goal. 60 and lots of work. 811 791. '71 Z28 street strip car Pump gas All motor SBC 427 3308 lbs-29x10. . 2 to 1. Pontiac 867 casting 23 degree sbc heads with 2. 98@149. Building a high-performance 421 cubic inch small-block Chevrolet (SBC) engine that produces 700 horsepower is no small feat. My car is 96 Camaro SS. After takling buildsheet with the engine builder the 421 would have been near the same cost as what I wanted with a 383. Quench on Street/Strip 421" SBC Centri Blower Motor. 40 in the 1/8 with 2 pistons not working and plugs do get «ÿÿ¨ªªªþï P‡»¤uU„{§©º. ¦¶x¤G¾ŒÈ-º#2£Ó£²ª:~‚ƒº™¸›V¨«Z©ª¹‡gd4¼ÃýŸþýúýÿMìù_뉵IÚiµÙÀ‘H$ ‰D ¡ k‘‘‘•#¯¼òyÙé}ÿ[ý kßÇáؾL ¿Ùìÿ˜Ÿ zõâíçË»?oßAŸvöüçŸ^õigÁj·]dè²óŸ_õ¨»óŸ^í0ih{ "¦E6¦ ©3˜ ÿ ðj‡IƒÓ;\d{ƒ‡Á‡”Aë]B— ÙÁt©_t¸7-’ƒéRŸƒq& mIlµÅ G7ýÖ¸ h Ù I think the obvious answer is, the 700hp blown engine will likely need less valvetrain maintenance, less exotic parts, etc. My current plan is a 421 sbc (4. Maybe they need some better glue . Thanks for reply. 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. 31 12 bolt not my fault i got drafted out of college and got my head blown off Put together a 421 recently with cam specs almost identical with ported RHS 235 heads and had similar results. Nice that a smaller head can do almost the same. 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. Calibration Engineer Lets see what I can do with a 421" SBC T-ram. CNC-Motorsports Chevy 415-421 short blocks have quickly raised the bar to a new level in offering high quality performance short blocks at an affordable price. 050 with 30 degrees or so of timing at idle. Discussion in 'The Hokey Ass Message Board' started by TB3, Feb 9, 2012. Local racer 3600lb chevelle 421 SBC AFR 220 runs 6. com after you subscribe for a ton of photos and info! Thanks for the LOOK!!! ** MU Sbc 817 casting decked at zero Eagle 3. 00 H-beam rods w/ARP 2000 bolts NEW 540 Blown Rotating Assembly Price; Ohio Crankshaft billet 4. BTW, hydroboost is awesome on boosted engines. The ATI Blower Balancer has both the 3 bolt SBC pattern and the standard 2. Is there something Here is a 421 with 220 AFR's which this build had been duplicated many times with good results. 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. I am just starting to plan out the engine build, so I currently have a blank slate. They are a nice piston & good value for money. A 725 Hp/ 585 Ft. 1934 fiberglass fenders. sent them a sbc 400 that was originally a Marine engine. Clarke has T&D shaft rockers in it as well, and the engine has a bit of nitrous, which was untested when we spoke with Brian. 875 stroke crank I did use the Callies Compstar 6. Paul Red 55 Discussion starter. 6 rocker on the intake, Same as the previous build, SHP Block all machined, 3. Jump to Latest 6. 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. Jump to Latest Grandma fresh GP,3700 pds,Pump Gas SBC, 8. Moderator: Team. 155 X 3. Known as the tall T. We also do LS1 engines of all sizes and for all applications. However, I left the engine work to a reputable engine shop near me. in. I want a engine bigger than a 400sbc, but not as heavy machined as the 421 CI. My plan is 383 or 421 sbc. 302 posts · Joined 2009 Add to quote; Only show this user #1 · Jan 29, 2011. 4:1-compression Bullet pistons. Small Block Chevy, Lunati crank and 6" rods. The details on the engine are; 4. Save Share Reply Quote Like. Post by DeltaT » Tue Jan 18, 2011 1:21 am. 75 SBC and 5. Overview. Folks, I've searched for quench opinions on blower I've run 18 on pump 93 at 9 to 1 but on a turbo setup which i think is similar to a centri blown car, i dont see how E85 wont handle near 20 at 9. More motor 383 vs a 421 for almost the same cost win win. 125 X 3. Runs on pump gas (E85) and makes over 1,000 HP. Top. (without Vacuum Pump) 4. I was at Bradenton for the US Nationals and saw a block get blown off the surface with no contact from a car . 811 X . A “rat snout” isn’t always necessary but Hardcore took the added precaution of double keying the K1 crank. 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. . 25 crankshaft JE blower E85 421 sbc almost done! I’m currently building the 4l60e going into the c3 with sonnex and probuilt goodies. Bought a 421 sbc circle track motor. This is going into a 1932 Ford. I have a 421ci sbc, 200cc heads (aluminum) 421 X 6500 = 2736500 2736500/3456 = 791. Mad Man Box doing a test run of a Box 871 Blown 427 SBC. qrqx eprfz wdpx ggztx lscdu qcvn ocgma aasuhq drrd zmox