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High compression sbc. I am running a very stock 350 with 76 cc heads.
- High compression sbc. Mounting bolts and shim kit included. 4 LBS MADE IN USA with high quality components and assembly May 11, 2018 · The term “modified engine” is fairly vague but we’ll assume that it is a normally aspirated engine with additional compression, better-flowing cylinder heads, a more-aggressive ignition curve, headers, and a high-flow intake system. Plan on going CSU carb and ignition is 7530t. Apr 11, 2021 · Heavy Duty 2. The engine in question is a basically stock 350 with vortec heads,8. What is a recomended initial lead timing on a 14. Icon flat top and dome top high compression 327 forged pistons in standard, . Indexing the plugs is always a good idea with high compression/large dome pistons. 030-inch bore and 3. Jul 19, 2022 · It’s the first Chevy engine I’ve worked with that has high compression so I don’t have much knowledge tuning it outside of reading through the forms and what not. 41:1 gear reduction, capable of cranking engines up to a whopping 18:1 compression. More info. Not sure what to get. If you want 12. Get the ultimate starting power with this top-rated starter. But what is the highest compression ratio that's safe for pump gas? Feb 18, 2008 · Guys, I have finally got around to testing my compression on my SBC before my rebuild to drop on new heads and cam. Dome requires no de-burring or preparation. basically I would like to pick up a decent hydraulic roller 1piece main 350 short block from a yard or local classifieds and use heads I already High torque motor with a gear reduction design cranks out a massive 180 ft. 1/2 ton pickup. 040", 4 bolt main, studded on mains and heads. Older readers may remember when it was common for high-compression small-block Chevy engines from the late 1960s to demand 42-44 degrees of total timing for best power. 0 Compression Flat Top Pistons for 23˚ Heads The best forged pistons available for Extreme High Horsepower Applications! Built for durability with Nitrous & Boosted Applications. Are you going to be driving this on the street, like a daily driver or weekend car?. 700, Dome 4cc, 2 Valve Relief, Compression Height 1. High torque motor with a gear reduction design cranks out a massive 190 ft. Feb 14, 2017 · About this item FITS SMALL BLOCK AND BIG BLOCK CHEVY ENGINES with straight mounting configuration FITS BOTH 153 AND 168 TOOTH FLYWHEELS AND FLEXPLATES with adjustable mounting block CRANKS OVER ENGINES with up to 11:1 compression ratio LIGHTER IN WEIGHT THAN FACTORY STARTERS at 7. Comes in the NEW Race Box Packaging! Fits Chevy small and big block engines. Built from scratch with all-new components, the torque rating is a healthy 4. If you put a camel hump head on a 305 those big valves are gonna have a fight with that small bore. I'm going to keep using the MSD programmable ignition which may give me some options. LOTS of STALL/LOOSE converter. I tested multiple high torque starters for my SBC engine and the best one by far was the one I found. 4 kW Sep 26, 2018 · Hey Guys. 5-1 to 10. At the end of the day horsepower, while important, isn’t everything, especially for street use. 000" x Rod 6. Compression ratio interacts with a lot of Mar 24, 2017 · Is there a cheap way to increase compression on my small block Chevy? I have a 350 small block with iron heads. Sep 1, 2002 · Read the tech article on Tuning Engine Compression, brought to you by the experts at Chevy High Performance Magazine Jul 10, 2005 · I've searched many threads but cannot seem to find an answer. advance dist. LOTS of cam!!!! Whatever you think it should be plus 10 degrees. 060 Dart SHP 180cc runner/64cc chamber Summit 1103 cam. 1 compression, Comp XE284H cam, a MSD ignition with a Vac. 028" head gasket, and vortec heads on an engine. Like 13. I have been thinking about putting some new edelbrock e tec cylinder heads on it with 64cc chambers. Nov 4, 2006 · High Compression timing BBC by 63IIPost » Sat Nov 04, 2006 3:51 am Hello all, I did a search but didnt find anything specific. May 17, 2009 · In this tech article we follow up our Cheap 350 project series by updating our small-block Chevy engine with performance parts including pistons, cylinder heads, camshaft, and intake manifold to Chevy 327 Pistons. Always wanted a 400 under the hood and I've come across one and just want some feedback on the potential compression ratios with the parts. 5:1 compression the only way you will do it with 64cc heads is to have a dome on the piston. 5-11:1 Jul 30, 2005 · I need a recomendation on a really good torque cam for a SBC 350 with vortec heads. 02" intake and 1. Jun 6, 2020 · Working on a fresh rebuilt 350, and I did a compression test, all cylinders read 140 psi. Part #90458 1. . if you do the research youll find that carefully matched cam timing,and header design can be used to increase the cylinder fill efficiency. I have hooker super comps and a Stefs aluminum oil pan with plug on side, any help appreciated. I have a SBC 400 with Vortec heads, 9. 0:1. Does this seem fine for 76's? I will be adding vortecs with a 64 cc. It goes up to 36 total, verified with timing gun. 6:1. 48-inch stroke Mar 19, 2020 · We explore why a higher compression ratio means more power for your hot rod, and explain what to do to maximize that bump in power. See full list on campbellenterprises. Adding a fogger, nitrous dedicated SRP BB-Chevy High Compression Forged Pistons Hollow lightweight smooth-flowing dome and radius valve reliefs for optimum flame travel. This black starter is a great upgrade for your car. In-line mounting block will fit either 153 or 168 tooth flywheels and has rotation holes for added clearance. Feb 21, 2017 · I know I'll probably be bludgeoned to death for asking another timing question on a basic small-block, but I want some input from the rest of you who have been doing this for a lot longer than I have. I have perused the forums and it seems like people like these: Tilton Powermaster Quality Jan 21, 2009 · I am trying to get some feedback on your theories of what makes more power on 91 octane: running a greater compression ratio with less timing advance, or vice versa. Mar 26, 2013 · Three of the leading suppliers high-performance starter are Powermaster, MSD, and Proform, and their experts can provide plenty of information to engine builders, racers and enthusiasts when selecting a starter for high-compression, high-performance engines. 0kW, 3HP*, OSGR, 12 Volt, CW, 9-TOOTH Pinion Ideal for High Compression Engines up to 18:1 Compression Soolid Billet Aluminum Mounting Block Torate Motor Position for Additional Clearance Full Ball Bearing Design Compact Design for More Clearance between Oil Pan & Headers Larger Field Windings,Stronger Armature, Bigger Brushes and Fits Chevy V 8. Please let me know if I'm close or far off. 1/16, 1/16, 3/16'' ring grooves. Now selling Short and Long Blocks, as well as the same high performance parts we build in our crate engines! Nov 15, 2021 · The Big Squeeze: High Compression vs. Exhaustive R&D, specifically designed forgings and centralized manufacturing allows CP to succeed at reaching their lofty goal of high quality at affordable prices. They are pin fit and balanced to plus or minus 2. Dec 19, 2007 · Big Block Chevy's don't handle high compression very well. s cranking compression. Jump to Latest 15K views 18 replies 15 participants last post by WILD72 Apr 29, 2008 C Brodix block, brodix ik200 cylinder heads, scat forged crank and forged h-beam rods, srp forged 11cc dome pistons, 750 double pumper, hooker super comp heade Video: The open-wheel Modified receives a high-compression, high-revving Chevy small block. com Mar 5, 2024 · The compression ratio for a small block Chevy can vary depending on factors such as the specific engine build, intended use, and desired performance. Designed for use in all common 23° heads. This vital function helps prevent gasket damage and ensures a superior combustion seal. The torque rating on these starters is a healthy 4. Nov 15, 2010 · Can I get some suggestions for what is the best starter to use for my new engine? The block is a Dart SHP 427 with 10. May 28, 2020 · I recently stripped down my 350 small-block Chevy because of loss of compression over the last three years. This will go in a 4000lb. Sep 23, 2025 · Allstar SBC Mini Starter ALL80515 3HP high-torque gear reduction, block mount Chevy mini starter. I am thinking this is a little low, compression ratio calculator numbers are as follows: Static: 9. Jan 7, 2021 · Then again, I’ve heard a lot that SBC compression ratios were overstated, is listed as 10. 700, Dome . In 5,000 miles and three different checks of the cranking compression, it has dropped from a high of 190 to as little as 120 pounds. +1cc Dome 13. 050’’: 225-240 HYDRAULIC COMPUTER NOT RECOMMENDED CONTROLLED TRANSMISSION: AUTOMATIC WITH HIGH STALL CONVERTER OR MANUAL COMPRESSION 10. Today’s highly efficient LS engines require much less total ignition timing numbers that are now less than 30 degrees. My first though it Dec 27, 2009 · so you want a high rpm screamer, thinking about building,a 302 like the old Z28 engines? well technology has advanced and theres better current options if your really interested heres a mid priced effective combo Ok time to get back to reality! if your serious about building a high rpm The Bullet Series SBC dome top forged pistons were conceived as a high quality SBC piston set available at a reasonable price. 250, Rod Length 5. 41:1 gear reduction, which is more than capable of cranking engines up Apr 7, 2025 · Older readers may remember when it was common for high-compression small-block Chevy engines from the late 1960s to demand 42-44 degrees of total timing for best power. 305 heads on a stock 350 will gain you compression but 350 heads on a 305 wont really help you out. I'm getting a borescope this weekend to find the part number on the pistons to be sure without pulling the heads. 125"ARP 2000 bolts x Piston 4. 5 grams throughout the complete set. If you installed your Holley HP ECM power leads as instructed and ran a separate ground from the battery to the block and still had the voltage drops and/or kickbacks, your crank timing may be too far May 27, 2009 · Need advice on a Chevy bolt pattern starter for a 14:6 to 1 compression big block. Nov 9, 2021 · If you don't have heads on the block yet, you can measure the volume and calculate the compression ratio using published or measured head and gasket volumes. Swapping pistons this winter looking at diamond nitrous race domes they will put me at 13. The engine in question is a 350SBC, with the following parts and pieces: 11. Intake and exhaust valve reliefs are radius machined and designed to Apr 23, 2013 · Re: What heads will give me the most power out of my sbc 305 305s had higher compression heads then the 350. 040". I'm currently in talks with my engine builder who is building a 355 for me. Fuel economy increased from 16 to 18 over the dished piston, and more power and torque according to the sensors in the car seat. May 10, 2016 · Now I have seen some 427 SBC deals that cranked less than 170 PSI and were not happy with pump fuel even pulling timing back 10 degrees. The engine runs fine Oct 3, 2011 · Hi guys, This 327 engine has a compression ratio of over >10:1 and I have no experience with this high a compression ratio and making it a daily driver. 5:1 with about 25lbs of boost? I know some people have done this and the tuning window is very small, I am wondering if using c16 or q16 if there is a chance that it may pre-ignite. 805, Set of 8 Pistons I'm pretty sure my 383 has roughly 10. 60" exhaust valves, especially with longer duration high lift cam profiles. All of these additions to an otherwise-stock engine will tend to make more cylinder pressure. What We Like: Fits many Chevy engines, including V6 and V8. When making a choice of production heads, always consider these three points. . Don't settle for less. are good to go). Apr 9, 2008 · High compression starter problems. The previous owner said it was rebuilt and has a cam but he couldn’t remember the specs. 41:1 gear reduction, capable of cranking engines up to a whopping 14:1 compression. It has a high torque. 0kW (3. I suppose that this is what superchargers do; effectively create high dynamic compression Feb 28, 2015 · Who has built a high compression sb around 10. LOTS of gear!!!! Whatever you do, you don't want the engine trying to lug at a low RPM under load. Mar 15, 2013 · JE Pistons has announced the release of a new lineup of lightweight FSR pistons for high compression Small Block Chevy 350 and 400 engines. Comes in the NEW Race Box Packaging! Fits Chevy small and big Mar 4, 2024 · That said, while a stock 350 Chevy may only have 200 or so hp, you can easily make 300 horsepower with a 350 Chevy budget build and upwards of 600 horsepower with a Chevy 350 max hp build with the right combination of parts used. Also what would you recommend for Oct 14, 2013 · High compression SBC 400 spark plug recommendation by lluciano77 » Mon Oct 14, 2013 11:37 pm Been out of the loop for a while. 000" 350 main 4340 non-twist lightweight forged s Oct 11, 2012 · How many people on here are running compression. H. Aug 9, 2024 · I’m looking to replace the cam/heads in my stock sbc 350. 905 inch bore Pin Dia. 5:01 For engines with monster cubic inches or compression ratios, these 100% NEW starters challenge the specifications, durability, and reliability of anything on the market. This year it comes inside for some well-deserved high compression upgrades to the short blo Performance Performance Head Gaskets The LaserWeld ™ stopper layer in Fel-Pro ® Performance MLS head gaskets provides a precisely-determined limit to the compression of the multiple layers at the combustion opening. Oct 9, 2021 · What I remember was that we went to the junk yard, grabbed a cheap 283 out of a 63 chevy and ordered a set of standard bore domed high compression TRW cast pistons from PAW (Performance Automotive Warehouse if anyone remembers them). Discount prices, fast shipping! May 16, 2006 · You can run 11:1 or even 12:1 compression on your pump-gas street motor, but you'll need this simple advie to make it happen. Torque rating is 4. SRP Small Block Chevy High Compression Forged Pistons are smooth flowing symmetrical dome for excellent flame propogation. I have a 400 sbc with 125 compression per cylinder. Depends a lot on how high the compression is and altitude, etc. Been using GM mini starter and they don't last, tried a starter with the aluminum block front and it will not fit. Comes in the NEW Race Box Packaging! Fits Chevy small and big Feb 2, 2023 · AND A 750-850 CFM carb wakes up many 406 high compression SBC engines if they have at least 10. Stick with the recommended plug gap and experiment with slightly larger gap if you have a good high output ignition system. Customer Reviews 5. Of course, the intake closing point of the cam has some effect on cylinder pressure and allows a little tweaking and the squish/quench clearance between Fits SB Chevy 327, Bore 4. 665:1 350+. )stock flat top with valve relief pistons what kind of compression would these make ? ( providing rings etc. 25:1 on 91 octane. 115C. I'll prob block fill it half way. Includes Pistons, Locks, Pins & Oil Rail Spacers. -1 by rfoll » Thu Apr 07, 2016 2:50 pm I used the Speed Pro 2256 piston, the vortec . 000" 350 main 4340 non-twist lightweight forged s May 11, 2014 · The three biggest tricks to making high compression live with pump gas. Engine specs SBC Chevy 400 11. Sep 3, 2022 · So this is kind of a revisited thread from a post I created a little while ago about 400 compression. Cranking pressure will not tell what happens when the engine gets up to running speed and starts ingesting a lot of air. A good set of domed pistons should be easy to sell to offset the cost. 5 / 10. If you are running pump gas, you are not likely to be in any serious competition where the higher compression is necessary. This starter is made to spin your engine faster. 5 to 1 and twin turbos? If so, what was the max size of your turbos? I'm running a 23 degree sbc dart iron eagle tall deck block. 100% new. 455 C/H 4. same reason as #2 For those reasons 99% of the people who Get Your Ignition System Ready to Race Proform High-Compression Race Series Starters have been built from scratch with all-new, non-remanufactured components. Alsohow much decking would be required to boost it to 9. 5:1 compression and a cam with at least 245 degrees duration at . 8" from $669. considering using a voodoo cam. 0kW, 3HP*, OSGR, 12 Volt, CW, 9-TOOTH Pinion Ideal for High Compression Engines up to 18:1 Compression Soolid Billet Aluminum Mounting Block Torate Motor Position for Additional Clearance Full Ball Bearing Design Compact Design for More Clearance between Oil Pan & Headers Larger Field Windings,Stronger Armature, Bigger Brushes and Ross 18 Degree Head High Compression SBC Pistons Standard Features ROSS forged dome pistons feature forced pin oilers when applicable, anti detonation grooves, lock removal grooves and come complete with wrist pin retention lock rings. May 12, 2017 · Compression should come out in the low 10s, and it's cheaper than burning down the high compression engine and needing to rebuild it. I. adv. Nov 10, 2020 · Static compression ratio is affected by multiple variables including crankshaft stroke, piston-to-head clearance, head gasket thickness, and piston valve reliefs (if present) or the presence of a dish or dome in the piston. I have been using a colder Accel shorty plug for the time being. vac. 150'' straight wall carbon steel wristpin (150g) included. May 25, 2005 · I was wandering whats the highest compression one can run on the street without resulting to using racingfuel/gasoline mix of some kind to eliminate detenation? This combination would use cast iron not aluminum cylinder heads. These pistons are engineered to withstand the extreme conditions associated with high-output engines, ensuring reliable performance under demanding circumstances. The new “hollow dome” pistons feature a 2618 alloy forging with a dedicated undercrown design that closely follows the shape of the dome and valve pockets for maximum weight reduction. Just looking for a nice street engine that won't see high rpms so I'm ok with the stock length rods and I'd like the CR to be between 10. 050" degrees duration, iron heads. It has mechanical secondaries, a Proform high-flow main body, and CNC-machined billet aluminum metering blocks with four-stage emulsion to provide more precise fuel metering, improved throttle response, and a more uniform fuel performance curve. 3 pistons, is highly recommended. 6K views 19 replies 14 participants last post by Georgette Kain Sep 13, 2023 Chepsk8 Discussion starter Some time ago like many months and a gazillion postings, there was a discussion about voltage drops and kickbacks with high compression SBC engines especially running the Holley HP EFI system. 930'' x . 5 compression, Dynatech 1 3/4 to 1 7/8 stepped headers and a Lakewood scattershield. The cam was degree upon SKU: 90452 Category: Chevy 350 23˚ Extra High Dome Tags: 23 Degree Head, 350, Bel Air, Buick, Cadillac, Camaro, Chevy, Corvette, Extra High Dome, Oldsmobile, Pontiac, Small Block Apr 5, 2013 · On the other hand, if the long-duration cam does a better job of filling the cylinder at high rpm than the short-duration cam, more air and fuel will be trapped in the cylinder and the resulting dynamic compression ratio will be higher. The last owner told me to run 4-6 initial timing on it in this heat, which seems to be good as it runs smooth. Large diameter pistons and slow flame travel require lots of timing advance which makes the engine prone to detonate. Been on E85 for 8 years now. 5:1 TRW 'dome' Oct 24, 2019 · The quality of pump gas isn't going to improve, so that's what you have to build to. A small enough chamber volume to get a working compression ratio without an excessively high, plug-masking, piston crown. 7:1 compression it's carbureted and has an HEI, but I lost the build sheet so I'm unsure. 927" Comp Height: 1. Engine 427 Car weight 3000 1:45 Rotating Kit 427 Small Block Chevy High Compression for World Products Motown/LS SBC block with LS7 heads Stroke 4. to 1? . 95 May 11, 2025 · The maXpeedingrods 3HP High Torque Mini Starter 18493 is built for Chevy engines. 678, Set of 8 Pistons High torque design with 2. 990'' x 2. Mar 6, 2017 · Flat-top pistons, 64cc heads, with piston to head clearance cut down to the absolute minimum you can run and still keep the piston from hitting the head is only going to get you 10. 935, Stroke 3. Mar 2, 2024 · Writing up my first recipe for a build. Jul 11, 2009 · So really to build a high-rev small block, need a good flowing set of heads (I was running ported Dart II heads), a solid camshaft can't be beat for high-rpm durability, single plane manifold and matched carb (of course matched valve springs, pushrods, lifters etc). AFR 210 heads and run VP 110. I've heard that Vortecs Oct 26, 2014 · assuming these hump heads are stock heads (64 c. Jul 7, 2021 · Jeff Smith talks about pump gas octane and fuel chemistry to offer some advice on the best gas to use in a high compression V8 engine. lbs of torque Billet aluminum mounting block has multiple bolt holes to fit both 153 and 168-tooth ring gears for SBC and BBC engines All steel gear construction handles high compression and big block engines with ease See More Aug 24, 2017 · Go with a colder plug for higher compression and experiment from there. Apr 23, 2020 · Plans are to replace the heads with 72cc combustion chamber heads to reduce the compression a bit, but the question at hand is whether this will be viable with a suitable camshaft selection. 2. 030 . I know compression will be low with stock pistons but I’d like a pretty choppy cam sound if possible. 125"1. The other parts are an Edelbrock Performer intake, a 600 cfm Holley carb, and cast iron exhaust manifolds. 000, Rod Length 5. I need to change my spark plugs. Right now I have timing set at 10* base and 31* total. It is recommended to consult with an engine builder or tuner to determine the ideal compression ratio for your specific application. 060 oversize. This will bump Oct 11, 2012 · How many people on here are running compression. is hooked up to manifold vac. So I was wondering what compression ratio Jul 28, 2015 · Ideas on what I should gap my plugs at, the ones I pulled out have about 60 runs on them and 30 street miles and checked the gap, they were . : 0. 5:1 but based on what I read it’s probably not that high. I was "shooting" for 210 lb. 5cc, 2 Valve Relief, Compression Height 1. 5000-5500 stall isn't unheard of in that world. Fits SB Chevy 283, Bore 3. 0 hp) rating ensures plenty of power on tap All steel gear construction handles high compression and big block engines with ease Works well for SBC and BBC engines up to 11:1 compression ratio Billet aluminum mounting block has multiple bolt holes to fit both 153 and 168-tooth ring gears Mar 11, 2015 · We give you some Starter 101 with help from the guys at Powermaster Performance and American Autowire; showing you how to get more out of your engine. I will be using a decent Building high performance, turn-key crate engines for over 30 years. I am running a very stock 350 with 76 cc heads. 1. I got readings of 165-170 on all cylinders. Jan 18, 2005 · Hey guys, since my 383 just died I am pushing up the time table on my twin turbocharged SBC project for my little V8 280z. 480 Stroke. 0 3 Reviews Jun 16, 2011 · Testing Compression on SBC - Best Method? Jump to Latest 39K views 10 replies 6 participants last post by 300Deluxe Jun 16, 2011 3 Dec 29, 2015 · How many have ran high compression builds on corn with a lot of juice?? I built a 13:1 407 this spring and put 100 through it. this may account for the math diff. Dart 230 cc heads. The goal here is to have as flat a torque curve as possible from 1500 to 5500. 73 gears,TH-350,etc. Here’s an example of a 350 with a 10. These lightweight starters are more compact and ideal for race applications or anywhere a stock starter won't fit. 3. 030, Stroke 3. The truck will be a backhalfed "Pro Street" type daily driver/cruiser with 3. In addition, the FSR forging utilizes external bracing for improved For high-performance and racing applications where substantial horsepower gains are the goal, upgrading to forged or performance pistons, like 5. The basic foundation will be a seasoned early '70's 350, bored 0. 050 lift cams Jun 14, 2009 · What would a high CR with a relatively short duration camshaft do power wise in a spark engine? Very high cylinder pressures, I guess, but does this equate to power? I figure that the high compression is useless if the valves weren't open a sufficient period off time to allow enough cylinder filling. I will be using a decent 2038-3905 283 Small Block Chevy FX Series +4cc Dome Top SBC 23 Degree Forged Piston Set 3. 5:1 TO 11. I'm run a two BBC's (396 and 454) in my 12 ton truck (not at the same time) and compression is 9:1 cr in both with a small torquey cams. 789:1 Dynamic: 8. 6:1 compression at best. 2:1 w/64cc (picture is a temporary pic and does not represent brands) Crankshaft: 4. It is perfect for high-compression engines. 1:1 compression ratio: 4. This means it can start tough Jul 4, 2008 · Without going into too many details (E85) I'm thinking of building a junkyard 13:1-14:1 compression small block 350 mill for as cheap as possible. lbs of torque Billet aluminum mounting block has multiple bolt holes to fit both 153 and 168-tooth ring gears for SBC and BBC engines All steel gear construction handles high compression and big block engines with ease See More Finish / Style: Natural / Mini-Starter 1. 73 gears, 235/85r16 tires Recipe: 880 casting block, Stock Crank (one piece rear main) Flotek 180cc DURATION @ . Non-silicon alloy for superior strength in high cylinder pressure applications. If so what other fuels are available? Anyone try c23? Jun 25, 2022 · Last year we built a 350 ci Small Block Chevy in the parking lot. 5:1 470 big block (chevy) on 114 race fuel? The cam is a roller with 260 @ . I’m looking for recommendations on a good flat tappet cam and head combo. Current thinking puts the static compression ratio limit at 9. It’s designed for small and big block Chevy engines. 5:1 for use with iron heads and 10. HELP NEEDED ASAP. 5:1 for use with aluminum heads to help prevent detonation. The have told me they prefer not to run near the Aug 30, 2023 · Those with High Compression / Very Grumpy Engines, What battery - CCA? Jump to Latest 9. Jan 1, 2014 · Best way of raising compression on a small block Chevy on the cheap. The motor is actually a 385 c. The chamber measures 58 cc with a "flat" plug, the spark plug adds 2cc of volume. A daily driver with a level of reliability and little Jan 18, 2005 · Hey guys, since my 383 just died I am pushing up the time table on my twin turbocharged SBC project for my little V8 280z. c. 41:1 gear reduction, capable of cranking engines up to 18:1 compression. edit: also has L79 cam. The cr came out at 9. Jun 30, 2012 · Re: too much compression 383 SBC Help by 73c34me » Sat Jun 30, 2012 9:17 pm Thnx for the good suggestions. Goal: Budget torque monster 350 for my 1984 GMC k25 High Sierra Camper Special, sm465, np208, 14 bolt SF 3. Discussion in ' The Hokey Ass Message Board ' started by nitrousnutter, Jan 1, 2014. 030 Bore 3. 040 and . I don’t know much about the engine because it came in the car. Engine is a 383 sbc, naturally aspirated, with MSD Digital 6AL, crank trigger, timing at 38 degrees. 12:1 seems a little high for a flat top. CHECK VALVE TO PISTON CLEARANCE RATIO: Apr 7, 2016 · Re: sbc increasing compression from 8. Motor is in a 72 c10. Feb 9, 2015 · Who out there is running high compression (11:1+) with pump gas and a 100+ shot of nitrous? I have been doing a lot of research on static compression, dynamic compression, cam timing, and so forth, but I would like some real world experience. Low Compression One of the defining characteristics of an engine is the compression ratio, which in simple terms is a comparison between how much volume there is inside the cylinder when the piston is at its highest and lowest points (don’t get me started on Wankel rotaries – they’re basically witchcraft). So what the rewards of high compression that justify the risk of detonation? Sep 24, 2015 · the bore size of the smaller SBC engines like a 265 or 283 won,t physically allow the use of the larger 2. For engines with monster cubic inches or compression ratios, these 100% NEW starters challenge the specifications, durability, and reliability of anything on the market. Ross Racing Small Block Chevy 350 Blown 8. bzmkrv 15z2myv 2nfdj v50 as9d oldxzu eq7b9 exhp goyhb jkcpi