421 sbc timing

421 sbc timing. Had a 355 sbc in my '34 Ford Tudor. 95. For my new Lunati cam it's 10-12 btdc at idle around 1100 -1200 rpm. Now building a 421. 165) 509 casting GM block with billet mains. Sep 13, 2023 · Slip the balancer onto the crank snout, install the tool, and crank her down til she bottoms out on the timing gear. 5-1. 110 lobe sep. “This motor has a Dart racing block,” White says. Talk to the experts. Sep 5, 2010 · What initial timing should i go? I have a 436ci sbc afr 227cc heads, super victor intake, and 12. R. Oct 12, 2022 · 600--650 vacuum secondary max rpm 5500 ,, VE 98%. #1 · Jan 28, 2008. i got the motor out of a 2,100 lb beretta it ran 5. 875 crank 6 inch rods and vic jr heads, engine is around 11 to 1 comp. Oct 28, 2013 · The block was taken to a bore size of 4. Feb 24, 2021 · One area of confusion is certainly a camshaft timing card. 62 60ft. The Chevrolet small-block engine is a series of gasoline -powered V8 automobile engines, produced by the Chevrolet division of General Motors between 1954 and 2003, using the same basic engine block. Instead of helping the engine turn over faster by overcoming the resistance of a lot of initial advance, I wanted to turn it over to build up oil pressure before it fired. This is our most versatile small block Chevy engine in our arsenal as you can get it in many configurations and applications from full drag race, circle track, mud race and pump gas pro street that makes an impressive 625+hp with the Dart 227 cnc heads and 10. 050 cam on a 108LSA and a *big* single plane pulls 14" of vacuum at 850 RPM with a Holley Terminator Stealth EFI unitI never measured it when I had a carb way for most people to set the timing, and is not a good procedure for optimum performance. I remembered that statement and broke out my timing light. We also tries 30 degrees of timing and lost even more HP. Sep 10, 2016 · 421 sbc. - Set to #1 TDC and adjust #1, move the crank 90 degrees and adjust #8 valves, and so on through the 1-8-4-3-6-5-7-2 firing order, moving the crank 90 degrees each time. You better off saving your money and getting an after market block with raised, big cam journals. Oct 21, 2013 · On my 421 sbc we ended with 32 degrees of timing @904hp . Drag Race Short Blocks - SBC: 427 Econo Series Drag Race Short Block: $6495: 406, 421 or 434 Sportsman Series Drag Race Short Block: In Stock! $6995: Drag Race Engines Econo Series - SBC: 427/640HP Econo Series Drag Race Engine: $13150: Drag Race Engines Sportsman Series - SBC: 434/710HP Sportsman Series Drag Race Engine: $14150 CNC-IC966E PART NUMBER. The manual explains that timing should be reduced 2 degrees for every one lbs of boost. Mar 24, 2009 · With your combo: 10-12 degees initial, 24-26 degrees centrifugal and 36 degrees total. 875" stroke crank Ohio Crank H6000 rods w/ARP 2000 bolts JE pistons Race rings and bearings Internally balanced - Billet caps add $700. Timing Chains & Covers Transmissions & Accessories Upgrades Valve Covers & Accessories SBC 421/427/434 Assemblies. Sep 15, 2008 · Timing was set to 34* as that was the magin number, higher/lower and it dropped off Here is the video we shot on the engine dyno as we tuned it, kinda boring as any dyno vids are, but figured I'd throw it up. I set the base timing approx 18 deg idle. We’re using a Summit HEI distributor. Below 4000 rpm and 2-3 psi boost net timing was only @14 degrees. Then hook up the vacume advance to the distributor and Aug 21, 2014 · by 1killerolds » Thu Aug 21, 2014 10:03 pm. My curve has been 12 intial 20 more at 3000 rpm for 32 . In most cases starting out with 12 degrees of initial advance is about Aug 20, 2011 · How much timing should I pull out with the fogger if we use it for the second stage ? Motor is 421 w/ Brodix Weld Tech CNC Ported heads ,With matching Brodix Intake . My combo is timing sensitive. SBC CHEVY SUPER PRO STREET SOLID ROLLER CAM 434 CUBIC INCH ENGINE 700 HP STREET ROD SETUP. Aug 28, 2012 · Re: 421 sbc build. 2 – Lube up the balancer. Jun 25, 2006 · Alright guys. Cut off the "ears" from the plate and install plate over the front of the roller cam. 30's on 300 shot until block give up. I would recommend building the motor from scratch, which means you’ll need to buy all new parts. Install the CORRECT timing gear (small bolt pattern, small center hole) Use three allen or small button head cap screws (hardware store). 050 with a lift of around 0. Havent looked at a stock v6 turbo tune in a long time. 68 cc chambers. We tried 35 and lost 20 peak HP. 1cc Dome, Rings, Bearings, Balanced Assembly. 253/261 duration. $2,596. advance unhooked. Hydraulic flat tappet cam and lifters. I have a good advance timing light. Not using the existing heads,going to AFR 220 race version. The small nitrous cam made some of the best low-end toque of all the camshafts because it was designed for lower RPM power bands and was out of power by 6000 RPM. 979. WISECO 2618 AIRCRAFT ALLOY FORGED FLAT TOP PISTONS. Duration at 0. Engine is 4. Give us a call 1-800-957-7223 and let's talk about your engine combo and how we can help you get to the winners circle! May 30, 2011 · The distributor had a boost retard/vac advance can that added advance for cruising and retarded under boost @10 degrees. Lunati recommended the voodoo 60142 but change LSA to both 106. 0 H beam rods, Ross flat top pistons, and Perfect Circle rings for a price I couldn't pass up. 1 3/4 primary headers 4 into 1 ,,, 3inch collector at least 18 inch long. Engine: 305-350 SBC. Hanzeng wrote: If my calculation is correct you are going from 11:1 to 13. Pontiac 867 casting 23 degree sbc heads with 2. Started putting together and noticed rod cap to May 2, 2008 · MKR-588 Member. 8 in the can at 10 " vacuum. Engine made 22lbs boost measured in the intake @ 5500 rpm but both MLS head gaskets leaked with one torching then head slightly on the dyno. Gain on Nitrous: 142 horsepower and 148 ft/b of torque. Adding the mechanical and initial values together generates the total timing. Aug 17, 2014 · Note: if your 383 sbc stroker motor is a gm crate motor running vortec heads then in that case dont run more then 14-maybe 15 deg base/32-34 total timing . . Hope this sheds a little light for you. If he's putting a $15,000 race engine in a Jun 30, 2010 · You can effectively use up to 24deg at idle base initial timing. If you went 358 CI, 4. If you’re looking for a turnkey solution, then I would recommend purchasing a crate motor. 165" Bore - 3. Shop On Sale Items 1965 Chevy K20 Suburban 421 Chevy Small Block V8 Timing Cover Gaskets and get Free Shipping on orders over $149 at Speedway Motors. 60 and lots of work. The heads are 215cc, 64cc, 2. Oct 10, 2014 · Not sure how accurate those little MSD timing charts are. The lower gear is induction hardened and has 9 key ways. 875 stroke, SCAT CRANK & SCAT COMPETITION RODS. May 2, 2011 · a 421 thats running right ,, should be able to suck an 800 through the motor and blow it out the exhaust ,,, i'd say an 800 is on the small side for a 421 X 2000% I'm running a 930 on a 385! I believe you need a vacuum gauge to find out what power valves you need. Hello, I purchased a SBC 421 ci kit from Skipwhite performance. Yeah, but 434 starts with a raised-cam, wide rail motown block, then has a buttload of machine work and custom parts; crank, rods, pistons, wider oil pan, specialty timing chain and valvetrain, and massive heads to feed it. dieselgeek. Jul 22, 2012 · 3000 stall. Was lean at first, got fuel in the "safe" range, re-adjusted lash, got timing in the ballpark 40 degrees showed best believe it or not. (yes, timing pointer was correct to begin with. If you go with stock block at least put Timing Chains & Covers; Transmissions & Accessories; SBC CHEVY 406 421 434 DART SHP BLOCK 4. Just wondering if anybody is running a comb like this and has a timing recommendation ? Oct 28, 2005 · The first night on the dyno, made a few quick pulls. 1 – Lube up the crank snout. Jun 12, 2018 · In an attempt to step it up a little for his first customers, Brandon recently finished up this 434 small block Chevy using a Dart SHP block. Then it sounds like to me you need to start playing with the idle restrictions. with 68cc chambers. Really cant get a big enough cam in a stock block for those heads and they like 8,000 plus rpms but we did run 5. SBC CHEVY TURN KEY STAGE 4. 00 unassembled SBC CHEVY 421 CUBIC INCH COMPLETE DART SHORT BLOCK KIT. My goal is 600-ish hp, street driven. This would require modifying the distributor to shorthen-limit the mech advance travel to 10-12deg travel. This is the ultimate muscle car motor! 700 horsepower 421 sbc build sheet. Is there something wrong with my engine combo? Dyno said it made 527 ft lbs of torque at 4800 rpms and 590 hp at 6800 rpms. Note: the water pump drive is sold separately. by 1fast10 » Tue Aug 28, 2012 1:14 am. Aug 24, 2012 · 421 SBC Pump Gas Build. Carl. 5cc DOME TOP 4. you just need to be careful with sand paper. 16 results. May 5, 2022 · Yes. Power Change. 00: $6,995. Initial timing is set with the vacuum hose unplugged from the vacuum advance on the distributor, and the hose leading back to the carb temporarily plugged so it isn't a vacuum leak. 36@109. If you want any hope of getting it together for 3 grand, run a standard 3. ”. 0 H Beam Rods, Dart Block, Icon 11. Contained a balanced assembly of: Dart SHP block, Scat forged crank 3. This allows the use of most rods on the market without having to grind any material from them when used in engines with a 3. 15. Stock 350 tpi motors ran 20-21 deg in the fbodies, and some of the 4. RPM Range: Nov 4, 2012 · Get a thrust plate from a factory SBC or 4. 65mph w/1. 25 stroke, you'll need to turn it at least 9200 to make use of all the RPM potentional. Cam gurus will be better to advise on the cam than I am. Oct 31, 2022 · 1000 horsepower small block chevy build sheet. Apr 1, 2017 · New bullet this year 421 sbc 18 degree Brodix 14-1 compression 114 race fuel was told 36 degrees timing from last owner seams high to me. We started by ordering a Jun 30, 2013 · We ran dart 15* degree heads on a stock block in 2010. 6" H beam rods, Eagle. 155 bore with a 3. I Shop On Sale Items Chevy R2500 Suburban 421 Chevy Small Block V8 Timing Cover Gaskets and get Free Shipping on orders over $149 at Speedway Motors. husler fender exit part # 502-65857 with 3in dynomax ultra flo part #289-24222 dont know anything about the cam other than lift and its like 4500-6500+ rpm. 750 stroke crank, such as those in Feb 5, 2016 · The timing can vary between 2 and 12 degrees BTDC, the recommended spark plugs are different and even the plug gaps vary. Dec 28, 2009 · 8-71 supercharged 421 sbc. But the most I get is 28 deg total @3000 rpm (vac. May 10, 2020 · You are still missing some timing at light load which will require a LOT more fuel delivery from the carburetor to make things happy. Shop 1964 Chevy K10 Pickup 421 Chevy Small Block V8 Timing Cover Gaskets and get Free Shipping on orders over $149 at Speedway Motors. A superlight 3. Available $149. 050, lift is up in the air as well as LSA. Our cam timing components were left in the straight up position. #22 · Aug 3, 2019. plugged) If I set total @ 35deg then base is way up in the 20s. These may seem obscure and even perhaps baffling, but in fact these cam specifications lay out a simple way of determining exactly how a particular camshaft will operate in the engine. by jklogan1987 » Mon Dec 24, 2012 6:57 am. I was always taught when timing your small block chevy, to unplug your vacume advance,plug the hose end and set your initial timing to what you need. Mar 21, 2021 · Several articles suggest a different procedure, which is apparently needed when you have an aggressive cam and want to make sure you are on the base circle during adjustment. Nov 4, 2010 · You don't have the budget for the build you're proposing. Description. As an example, 10 degrees of initial and 24 degrees of mechanical advance creates 34 degrees BTDC of total timing. SBC 421/427/434 Assemblies PBM CHEVY BBC BILLET TIMING CHAIN SET FOR RETRO ROLLER OR FLAT TAPPET CAMS 8991T. 050). Carl used AFR 220's but also said later that the heads were too small. 3. 30 1/8 i replaced all pistons rods it had old pontiac heads May 5, 2011 · 71 posts · Joined 2009. 4. 875 Stroke, 350 or 400 Main, Compstar 6. The face of the balancer will be 3. Holley 1050 dominator set up for race gas. I talked to Comp cams and they recommended the 12-677-4 solid or 12-268-4 hydraulic. 1000 horsepower, 725hp at the crank, all-aluminum LSX 454 with EFI and twin turbos. My distributor is a HEI with a curve kit (lightest springs). That’s vitally Hardcore Horsepower’s 692 HP 406ci Chevy. 0122, 7am-10pm, everyday. 00” from the front of the block when it’s completely pressed on. Performance & Machine in Simi Valley, California, where we assembled our 434ci small-block combo. Which 1050 would be best to use on a 421 SBC. Feb 24, 2013 · 421 kit from Skipwhite. Im trying to set my timing on my 388. Shop Chevy R10 421 Chevy Small Block V8 Timing Cover Gaskets and get Free Shipping on orders over $149 at Speedway Motors. The timing marks were also poorly marked on This timing set if manufactured by SA Gear. I just googled 1991 5. Degrees of backlash is another way to check timing chain stretch. We deck the block, bore the block, hone the block and 1 day ago · Find CHEVROLET Chevy big block Gen VI Timing Chain and Gear Sets and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: REWARDS Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Apr 16, 2020 · We prefer to set the initial timing for most engines at 10 degrees Before Top Dead Center (BTDC). 75" stroke, 5. 5400 conv. Many new pointers for sale. 875 with eagle 6 inch rods Diamond 8cc domes that should make it right at 13. Call 800. 050, 11:1 on 93. Apr 3, 2015 · 22602 posts · Joined 2007. Buy in monthly payments with Affirm on orders over $50. May 20, 2009 · 421 SBC 1050 Ruperts Alcohol Carb BG Fuel Log with regulator built-into the front What is a safe starting point for static timing on a 400+ SBC running 14:1 alky. Apr 12, 2008 · Paul Wright. #1 · May 5, 2011. It came up with a bunch of hits. 60 exh and have a #2975 vic jr intake with holley 850 dp. That should wake things up quite a bit. Sep 1, 2017 · Best power is achieved when ignition timing is set to fire the spark ahead of time to reach that peak pressure at about 2 degrees after TDC. He is going to spray it every now and then with a 190 shot but mostly run on motor. No longer a 383 build because I got another 400 block with splayed caps, Scat lightweight crank 3. Aug 29, 2011 · Initial advance is the timing at idle with the vac. SB Chevy 415 421, Compstar Crankshaft 3. It also recomends a MSD retard boost timing box which I really dont want for 5-6 psi . 0 HYDRAULIC ROLLER CAM 421 ENGINE 550 HP STREET ROD SETUP. sent them a sbc 400 that was originally a Marine engine. SBC CHEVY 421 CUBIC INCH COMPLETE DART SHORT BLOCK KIT. I initially installed a 12v circuit to the distributor that did exactly what you're considering, but for a different reason. With me being a bit younger and into the e85 era. The car runs great. “This 434 is definitely going to put the customer where he wants to be with ease,” Brandon says. 4:1 Pistons. Comp Cams SBC Xtreme Energy Step Nose Hydraulic Roller Camshafts. I certainly agree, you need 38 to 40 degrees. 875 stroke. Jul 1, 2013 · 6054 posts · Joined 2011. 'alll in' by 2400rpm is too low for your combo, 3500rpm+ 'all in' is better suited to your combo. While more stroke can be stuffed into the Dart block, the This cast aluminum timing cover allows you to use the popular magna-flow cam driven water pump. A 421 should be very tame with a 230 to 240 duration @ . I just want to see if anyone has any suggestions for optimal ignition timing on one of these bad boys. Available $5,395. Timing Chains & Covers; Transmissions & Accessories; SBC CHEVY 421 DART SHORT BLOCK FORGED +5. Full retard was in by 2-3 psi which would hold advance at 26 total from 2 psi up above 4500. Rock the balancer back and forth with a breaker bar on the balance bolt and watch the timing mark. E. 155 PISTONS SCAT CRANK. Ignition timing was set at 34 degrees total and 93 octane fuel was used. 72 60ft. 4 – Slip on balancer. I am building a 421 that will have an 8-71 blower on top. ) Motor made a dismal 590 @ 6300. 5 rear 28" tire. The previous engine was a Dec 15, 2012 · Re: 421 sbc cam and combo help. 71mph w/1. NB Its all about what you will lose in Apr 17, 2018 · One of the more popular engines SWP builds is its 434 small block Chevy with the All Out package. These special cams are made from an Austempered Ductile Iron Core, (a super hardened cast core), and have a reduced base circle (1. Small block Chevys (and most other GM performance V8 engines) perform best when the total timing (full centrifugal advance plus the initial timing setting with vacuum advance disconnected) is all in by 2,500 Œ 2,800 rpm and is set to 36 Œ 38 degrees. 3 syclone turbo trucks i've seen 17-20 as well, if i recall that right. Aside from bone stock, my SBC has a very "mild" cam, intake, and carb. The PBM timing sets are hand matched for Feb 26, 2019 · Sbc 817 casting decked at zero Eagle 3. 7L 350 timing pointer. 8" rotating assembly won't leave you enough to even machine your block. I have been communicating with Paul Sep 13, 2023 · Slip the balancer onto the crank snout, install the tool, and crank her down til she bottoms out on the timing gear. He explains, “I ordered all the parts to build the engine and had Dec 13, 2007 · I just built a 383 stroker for my truck. 15 lbs boost, intercooled. Solid roller cam. RUNS ON RACE FUEL. Sep 12, 2006 · SBC total timing question. 875 stroke, Eagle 6. Custom Sheetmetal tunnel ram intake for single 4500. Just curious on what total timing a SBC with 23° heads would want on the safe side. I'm excited to be part of a Bonneville team and could use some tech advice. $5,999. 5 to 1. . Dec 5, 2017 · My current set up 421ci is shp block, 3. 155 inches, and mated with a 3. 5 rockers. 1 flattop je pistons, PTC Nitrous Converter 4500 stall, my cam is Jun 11, 2010 · Dyno Results on 150 Shot of Nitrous: 623 horsepower and 629 ft/lb of torque. I am able to run 16 initial, 36 total all in by 3k rpm. 875 Forged Crankshaft, Eagle 6. Engine fired right up, and runs great. You would need to read up on the transmission ratios, rear gearing, and tire size to get what you want. Our gasoline SBC will receive approx. Jul 1, 2020 · An old carburetor tuner adage contends that 80 percent of carburetor problems are ignition related. Brodix track 1 heads. 050" Lift: Intake: 234° Exhaust: 244°. 0122, 7am-10pm CST, everyday. Add to Cart. Shop Chevy K1500 421 Chevy Small Block V8 Timing Cover Gaskets and get Free Shipping on orders over $149 at Speedway Motors. Sep 11, 2020 · Mechanical advance systems generally add between 20 and 30 degrees of timing. and 5:14 gear with 14x32 slicks. #2 · Apr 3, 2015. Joe, his fiance Gina and Troy Pirez Jr. Power went flat thereafter. 429/460 W/P Cam Drive Timing Cover (Use Gasket # 300-17876) 500-894002. 08/1. “We do all the machining in-house and do the boring on our Centroid CNC machine. Worked better than it sounds. 155 bore x 3. 4:1 Flat Top Pistons Designed for the 50cc heads Learn More. 73 8. 700 horsepower, 585hp at the crank small block Chevy engine build sheet. Adding a vacuum pump to evacuate crankcase pressure contributed an additional 35 HP, raising power from 657 to 692 HP at 7000 rpm. 050 with 30 degrees or so of timing at idle. then install assembly into block. 08int 1. alloy 195 cc heads. Jul 28, 2019 · 1598 posts · Joined 2016. “Nick [Bussiniah] helped me get the motor done and dyno’d in time. Jun 24, 2008 · Hoping to see 10. A 406 cubic inch small block is one of the most popular choices for Chevy powered sportsman drag racers seeking strong reliable power at reasonable cost. With that set, remove the cap from the distributor. Aug 12, 2010 · more timing. Jan 28, 2008 · Ironman Discussion starter. Leave the vacuum advance out of the picture until you get it running correctly without it, as all vacuum advance is Feb 3, 2012 · To get this build going, we went to our favorite machine shop, A. The upper gear is cnc'd from billet steel. I might just try two blue springs, set it at 32 or 34 total and see how it runs. Hello all, I have a question about a future setup. Nov 26, 2009 · It's been done lotso times. We recommend a stall converter in the 3000 rpm range with this engine. 050 camshaft prefer a Hyd roller. 5:1 Dome. Usually for stock chevy around 4-6 degrees btdc at idle. This is a premium timing set as compared to any of the low cost versions on the market. This will come with everything you need including the block, crankshaft Nov 21, 2011 · Ignition timing question - maximum effort turbo SBC. 0 H Beam Stroker Rods, Icon 11. 44@120. 429/460 W/P Cam Drive (only) Apr 28, 2014 · This particular 421 cubic inch small-block Chevrolet engine build was started as a father/son project while Army veteran Mike Sargunas was stationed abroad in Afghanistan, and was designed to replace a 383 SBC that blew up just prior to Sargunas’ deployment to Iraq in 2009. During very hot weather, total timing should be set at 31-32 degrees. My 421 SBC with a 240/238 at . 4600-6600 rpm. 1924 posts · Joined 2006. Sep 17, 2013 · Idle timing and such wont effect wot performance obviously but a stock cam shouldnt need much more than 24 deg. This cover comes in a satin finish. Referred to as a "small-block" for its size relative to the physically much larger Chevrolet big-block engines, the small-block family spanned Shop Chevy Express 3500 421 Chevy Small Block V8 Truck Accessories Camshaft Bearings and get Free Shipping on orders over $149 at Speedway Motors. 00. All aftermarket and production camshafts use a series of terms and specifications to identify their operating characteristics. Mar 19, 2020 · EFI will really calm down a longer duration cam in my experience, in terms of idle quality and vacuum for power brakes (especially if it has timing control). Those are the two you really need to know. 155 and 3. 1972 Chevy Nova - 12. I would like to start by thanking Joe Irwin of Fast Forward Race Engines of Florida for helping me for the last two years on this build. The majority say to have duration around 250/260 at . Cam is howards 180345-10 hyd roller 1. We use the PBM timing sets in all of our high performance engines. It is half and half, some recommend 106, some up to 110. Cam is in 680 lift range ,w/282 -292 @ 50 duration 108 Lobe separation . CNC Competition 415/421 Short Block, Eagle 3. 235 cfm. We use a black Sharpie to place a mark on the distributor body where we want the Number One spark plug wire to be located. Mar 4, 2009 · If you're looking for NA streetable pump gas power, the more cubes the better. 1-1 comp with 37cc combustion chamber. I'm getting cam recommendations all over the place. 875 stroke, Scat rods p/n 2-ICR6000-7/16 6", and probe SRC p/n 14929-030 pistons, & Howards p/n 180265-10 hydralic roller cam . 90's the first time out. 460/0. 95 $6,099. 470 and a lobe separation of 110 to 112 degrees would be a good choice. by badss540 » Fri Jun 03, 2011 8:41 pm. 530I-. Worse case scenario I can yank the other bushing out and put the 18 MSD one back in. This is done with a combination of initial advance, plus centrifugal or electronic controlled advance for engine speed, plus vacuum or electronic advance for engine loading and throttle effect. 875" Stroke. Total advance is the timing at 3000 or more with the vac advance unhooked. 875-inch Callies Compstar crankshaft for a displacement of 421 ci. Profiler American X heads that are cnc'd by profiler. Add to cart. need more hp. Vacuum advance is a separate system that uses a small diaphragm assembly Shop 1988 Chevy Camaro 421 Chevy Small Block V8 Timing Tapes and get Free Shipping on orders over $149 at Speedway Motors. Why not jump on the bandwagon. The perfect combination of power and reliability. single pattern 220deg in/exh at . 6:1, IMO this alone could be your 50+ hp, I would just make sure that the build can handle this for any amount of time. Part No. Dart SHP Block, Eagle 3. to get 34-36 total . 155 BORE SIZE FULLY MACHINED, 350 MAINS. 75 to 1. 620-05303. This engine is fully assembled from intake to oil pan. 421 ci ( 400 ci bored to 4. However, I left the engine work to a reputable engine shop near me. But now, a cam around 216/224 degrees at 0. This is especially helpful when checking and assembeld engine in the car. #5 · Jul 3, 2013. 50" stroke and has a Littlefield 871 competition alcohol blower with 10% OD. 545E. Nov 26, 2021 · Your timing curve can tune out alot of low speed bucking. More than a degree or two of backlash indicates time to replace. Car weighs 2710 with driver. Cam is gonna be around 263/269 @ . do a dynamic compression calc [includes cam timing ] but your static should be around 10:1 CR. Then; set up the vac advance for 10-12deg of vac adv at high speed cruise when manifold vacuum is high and engine load is low. As far as what rpm to set it, you should be all in by 3000 rpm, so rev it just past 3grand and set your total. 3 – Install tool. The engine will be set up for a "tough" street/strip car (more street). 00 ATI SB Chevy 7-inch balancer and Pioneer Hd 168-tooth add$450. The engine consists of the following: forged 4340 crank, forged 6" H beam rods w/L19bolts & tool steel wrist pins, forged blower pistons 7 Dec 20, 2018 · E85 421 sbc almost done! E85 421 sbc almost done! I’m currently building the 4l60e going into the c3 with sonnex and probuilt goodies. Here's the specs. 421 Small Block Chevy Short Block Price; Motown block Ohio Crankshaft 4340 3. For your 421 at 10 to 1 compression and factory iron heads on pump gas I'd start around 10-12 degrees initial and put 10 degrees in the mechanical advance (20 at the crank) for a total of 30-32 degrees. May 28, 2011 · Re: Any proven combo's out there for a 406-421 sbc. The next milder cam than what comp cams recommended. Eagle Crank 4340 ,3. Most stock harmonic dampers aren't marked for checking total advance. 3 roller cam engine. You will probably have to turn you idle down quite a bit after, and I would double check your idle mixture also. 00 assembled $6,595. have helped me build the baddest bullet my money could buy. You with need to get some timing tape for the damper or use a dial type timing light so May 20, 2009 · What is a safe starting point for static timing on a 400+ SBC running 14:1 alky. 125 bore with 3. 7" rods, about a 200-215cc sized head, a solid flat tappet cam, and a victor intake with a 750DP. If the surface is really corroded it will sand the metal down so you would basically remove the marks. The motor is 13-1 compression. I have a friend who know's a bunch about engines and he suggested the 12-676-4 solid. 423 Cubic Inch / SBC / "Bracket Buster". 006" Lift: Intake: 308° Exhaust: 318°. The long rods will hurt lower speed power where most dirt track passing is done, corner entry or off the bottom on corner exit. 000 H Beam Rods, CP Pistons +5. Available $3,495. Ok, change in the plan. Looking for suggestions or recommendations as to what 23* head/intake runner size to use for my 421 build. 2015 Dodge Challenger - 11. This cam creates decent low-speed and mid-range torque to accelerate the car because it has a tall gear and a stock stall speed converter. Compression is 10. THESE ARE THE ACTUAL DYNO SHEET NUMBERS FROM A PULL ON THE 434 PRO SPORTSMAN 18 Degree SMALL BLOCK CHEVY ENGINE. I'm going with the 12-676-4. With the trans in Park and the dial-back light hooked up, upon light acceleration, the timing literally retarded about 10 degrees and then quickly advanced. This is a race car only. Compstar SB Chevy 415/421 Stroker Kit, Balanced Assembly, CP Pistons 13. Shop Chevy Express 3500 421 Chevy Small Block V8 Truck Accessories Rocker Arm Studs and get Free Shipping on orders over $149 at Speedway Motors. 875 Crank, 6. Oct 31, 2022 · The best way to build a 700hp small block Chevy is to start with a clean slate. The honing we do on our Sunnen SV10 diamond hone machine. We are on a tight budget, have adequate fuel management, but no electronic distributor or boost timing retard. rr eq ve vb fu la cb cc so zq