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Mild cam for chevy 350 of Technology
283 versus 350. I have had a 283 and a 350 in my 57 over the last 10 years. Both of them used the same high performance parts like headers, aluminum intakes, carbs etc. To be honest I couldn't tell that big of difference between them. I have a 4 speed and 3.55 gears. Right now I'm running a mild 350 and it doesn't really feel that strong.Its been about three months since Ive got this car running and driving with a fresh 350 chevy motor and trans. ... So- whats the best mellow sounding mufflers for a SBC with a mild cam with 2 1/2 inch tubing? Attached Files: IMG_20121116_141319.jpg File size: 505 KB Views: 356. fishslayer82, Nov 25, 2012. SHARE POST #1.Work continues on the budget 75 Nova. Installing a new cam and timing gear/chain. Found this car on Marketplace last year and plan to budget build it into a ...Find CHEVROLET 5.7L/350 Chevy small block Gen I Melling Camshafts 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. ... Camshaft, Hydraulic Flat Tappet, Advertised Duration 283/291, Lift .480/.486, Chevy, Small Block, Each. Part Number: MEL-22234.Here is the order. 1) set the initial mechanical timing, 2) plug the vacuum advance into a manifold source. 3) set the idle speed to 800 to 850 rpms for a mild cam of 1000 rpm for a more lopey cam. 4) adjust the idle air mixture screws for best idle (highest speed and highest vacuum). 5) reset the idle speed if needed.350 Chevy-Stock vs Headers vs Q-Jet The graph shows that a stock two-barrel, 350 Chevy could hardly be considered a power house. The combination of mild cam timing and limited breathing through the two-barrel induction and stock iron heads resulted in peak numbers of just 241 hp and 359 lb-ft of torque.305 Chevy Small-Block Engine Build - 305 Chevy ... With 8.6:1 compression and a grossly mild hydraulic cam, a stock LG4 '82 Camaro 305 wheezed out 145 net hp at 4,000 rpm and only 165 lb-ft of ...Many years ago I put a Comp Cams "268" hydraulic cam in the 350 in my Suburban, had what I would call the perfect mild lope, kind of like the Chevy L-79 cam. Has a Turbo 350, did not seem overly aggressive with the low stall torque converter either.A customer is requesting me to build a mild, 350 SBC for street cruising and car shows. It goes in a custom 1967 C-10 Chevy pick up with all street equipment so we must be careful with the choice. His only request, "I want it to have some cam sound and some pep" My plan is basically a stock 350 rebuild, dish pistons, GM Iron Vortec heads, and ...Chevy SBC 350 5.7L HP RV 420/433 Lift Cam Camshaft & Lifters Kit Torque MC1730. Recommendations. Chevy SBC 350 5.7L HP Stage 3 458/458 Lift Cam Camshaft & Lifters Kit Timing. dummy. Elgin TEK-401 Top End Kit. dummy. Chevy SBC 350 5.7L HP Stage 3 443/465 Camshaft Lifters & Timing Kit MC1988. Try again! Details .If it does not the vacuum canister is ruptured. Now recheck the timing. It should be 18 to 24 degrees before top dead center. Now idle it down to 700 to 650 RPM and reset the idle mixture screws. Now put it in gear and see if it idles, if not then more than likely it needs a stall converter.Chevy cam kit push ebayChevy 350 big cam 350 chevy cam installChevy 283 327 350 400 ultimate cam kit 232/232 at .050" 375hp springs. Camshaft 7l tbi camshafts bbc sbc 1979 1967 liftersChevy 350 with 512 lift cam Best cam for 350 cheviesChevy cam scpi hop camshaft engine block fuel small system 1003 hrdp plus email google twitter rod.Landspeed Addicts. Another thing to keep in mind, larger engines mellow out a cam. So a cam that has a lot of lope at idle in a 283, will have less in a 350 or 400, for example. Now add in compression ratio, vehicle weight, rearend gear …Chevrolet's small-block V-8 engine timing specifications depend on the cubic-inch displacement and whether a manual or automatic transmission matches the engine. Small-blocks have ...For my own '94 350 truck engine, I chose the XE268H. It is a relatively high lift, but short duration cam that maximizes torque. I included a lot of other modifications to my engine that support my high torque, mild horsepower plans. It works out to more than 400 ft./lbs. torque from about 1800 to 4400 RPM.Basically I have a 350 small block chevy bored .30 over! Dont know much about the motor I just bought it!! I want that rough idle but want it to be good for low end torque & a cruiser. ... cause even a mild 262H style cam you can hear, it may not sound as if its a racing engine but it sounds good and most can deffinatly hear the cam, but like ...Locate 350 Mild Cam on sale below with the biggest variety of 350 Mild Cam anywhere online. ... 350 Mild Cam : Chevy 283 327 350 5.7 V8 Mild Stage 2 Elgin Camlifters Kit 444444 214214 050 $202.95 View Item Details Olds 307 350 403 425 455 Stage 2 Camlifters Kit 214224 050 Street Mild Perf $251.85 View Item Details Elgin E-1029-p Mild Street Cam ...Comp Cams 12-211-2 Magnum Hyd Camshaft for Chevrolet 350 SBC .470/.470 Lift. Opens in a new window or tab. Brand New. ... Chevy 305 327 350 400 SB Mild Street Cam Camshaft 214/224 at 050 FLAT TAPPET (For: Chevrolet) Opens in a new window or tab. Brand New. $143.86. Buy It Now. Free shipping. Last one.One way to evaluate an engine is to look at the RPM spread between peak torque and peak horsepower. A well-designed engine may have a peak torque of 5,500 and a peak horsepower point of 7,000 rpm. That creates a power band of 1,500 rpm. Most engines tend to create power bands that are closer to 1,000 to 1,200 rpm.Feb 8, 2012 · If it does not the vacuum canister is ruptured. Now recheck the timing. It should be 18 to 24 degrees before top dead center. Now idle it down to 700 to 650 RPM and reset the idle mixture screws. Now put it in gear and see if it idles, if not then more than likely it needs a stall converter.Go to a milder cam, etc. There are lots of contributors to engine surge, the carb can or not be one of them. The old saying that "most carburetor problems are electrical" meaning distributor still holds a lot of truth. Most formulas will tell you 600 to about 610 CFM for a 6000 RPM 350 engine. So a 650 which is a common size is in range.Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 265/271, Lift .522/.529, Chevy, LS, Kit. This product may not be eligible for select promotional offers. Find 1997 CHEVROLET 5.7L/350 COMP Cams Camshaft Kits and get Free Shipping on Orders Over $109 at Summit Racing!Idling, roller rockers, high compression dome pistons,mild CamWorking with the 180cc RHS heads was a very mild Comp High Energy 252H cam that offered 0.425-inch lift, 206 degrees of duration (at 0.050) and 110-degree LSA, which would work acceptably with any ...Question type: Car Customization. I need help picking a cam for my 87 350 engine. It is a tbi engine but i have a team g 7531 intake and a 750 holley double pump carb. I also have a pair of camel back heads and headers. I'm going to put all of these on the engine but i need help with the cam.Lumpity-lump Cam for a Chevy 350/300HP Crate. Going down to a local shop Saturday that races and works on Road Course Corvettes. Don't have the tools to put in a Cam. Any suggestions for for Thumpity/Thump Cam. Probably do just Cam and Lifters, engine only has 7K miles on it. have a set of Roller Rockers, previous owner threw in when I bought it.Best initial timing for mild SBC. I have a GMPP 350/290 hp engine. The 222/222 @.050 cam was mismatched to my driving needs (need better economy), so I have swapped it to a Summit 1101 camp that is 194/204 @.050 . I have static timing at about 11, and total (with centrifugal) at about 30. I also have a vacuum advance that adds about 17 degrees ...Here is where I am at. Stock 350 LT1 from a 1970 Z 28. Pink O rods, 11:1 domed pistons, 1182 crank, stock intake, not sure 100% on the carb yet, looking at a trick fuel 780, or perhaps the 780 Holley, 3:73 gears, M-20 Trans, 1.75 Hooker Super Comp Headers, chambered exhaust. Currently the cam in the motor is the comp cams 30/30 listed above.A new study explains why so many of us find it easier to work and learn when sitting with our laptops in coffee shops or other bustling places, and the answer is simple: modest amb...S10 with a 350 mild cam very fast very fun and reliable truck to drive.This graph reveals the different lobe profiles from mild to wild. ... The much-vaunted L-79 camshaft was a famous factory performance hydraulic lifter camshaft for the 1965–1967 350 hp 327ci engine used in the Chevy II, among others. ... This camshaft was highly regarded and an extremely popular cam with Chevy performance enthusiasts because ...350 Chevy-Stock vs Headers vs Q-Jet The graph shows that a stock two-barrel, 350 Chevy could hardly be considered a power house. The combination of mild cam timing and limited breathing through the two-barrel induction and stock iron heads resulted in peak numbers of just 241 hp and 359 lb-ft of torque. The mild combination …30 years ago I used a 327/350 cam in a 10.2:1 283 V-8 Vega, an 8.2" ChevyII rear axle with a 3.55 gears and a 2,200 converter. With me on board it weighed 2550 lbs. It ran low 14's at 98 mph. The mph figures out to 190 HP rwhp or at best 228 engine HP assuming 20% driveline losses ( I think it made more like 220hp).Work continues on the budget 75 Nova. Installing a new cam and timing gear/chain. Found this car on Marketplace last year and plan to budget build it into a ...You really should pick a carb and intake for your cams torque range. If you want to keep your intake and are not into messing with carbs the 80555c would work well but a simi, q-jet, (sean murphy induction) or a jet, q-jet might be better being that they are all kind of higher dollar carbs like the 80555c holley. Basically I have a 350 small block chevy boFirst thing you need to do is measure the bores at the Landspeed Addicts. Another thing to keep in mind, la
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In your case, a near stock 350 cu. in. should be capable of approximately 5000-5500 RPM with a mild cam. However, a 4-cycle motor only moves 1/2 it's cu. in. in air through the motor per revolution. A 350 will pump a maximum of 175 cu. in. of air per revolution at 100% volumetric efficency. Let's assume your 350 could turn an over estimated 6000.The Big Al said: The recommendations for the tunnel ram will be based on the CFM on top of it. (2) 390cfm carbs = 780cfm, can go on almost any mild engine. look cool and help with torque. All this spayed main cap for a stock block can be over rated and costly. If your build needs them, just get a Dart SHP block.Like. 75gmck25. 3029 posts · Joined 2006. #4 · Dec 30, 2010. In that timeframe the stock 350 in a truck was only rated at about 160 HP, and the stock cam was very conservative. I've seen the specs a couple of times, and I think duration was about 185 at .050. The "hot" cam of that era was the GM 929 cam, and even that was only 195/202 at .050.Old video of my chevy before painted it and did some upgrades to itmisguidedangel Discussion starter. 59 posts · Joined 2007. #1 · Jul 9, 2008 (Edited) Hey guys. I recently did an engine swap in my 73 Nova from the original Inline 6 to a 350 SBC. One of the only original parts that I kept under the hood after the swap was the Radiator. Now, the power difference of my new engine is extremely evident.It has a mild cam, air gap intake, with headers. 3.73 gear What is the best carb for this set up for performance. I have a 1411 750 edelbrock now. From what i read its too big. ... Well to a point..I had a 2 ton furniture truck 1969 with 350 chevy in it large enough box to park a car in it.What to do if your personal information was exposed in their massive data breach. Back in July, T-Mobile agreed to pay out $350 million to settle a class-action lawsuit brought by ...U.S. stocks traded lower toward the end of trading, with the Dow Jones dropping over 300 points on Friday. The Dow traded down 1.07% to 32,798.91... U.S. stocks traded lower towar...This Cam-type features a 2000-5800 RPM Operating range, 227/241 duration at .0.050. It can fall in the category of one of the best Cam for Chevy 350 because of its hard heating exhaust note. COMP Cams 12-602-4 Big Mutha. This Cam-type comes with a noticeable feature of a 9.5:1 compression ratio, more than 2800″ tall.Sep 2, 2010 · First off new engine specs, 350 sbc, world sportsman 2's, edelbrock eps intake, holley 600 vacuum secondary, 260/270 212,218 @ 50 (custom hydraulic roller cam made after the lunati 60120 voodoo cam) 510/510 lift with a 106 center line with 112 LSA and is 6 degrees advanced. Timing is set at 16 mechanical and with full manifold timing with ...A lot of guys may suggest the L79 lo known as 327/350 hp cam, which is fairly mild, or the Duntov Cam also known as the 30-30 solid. Personally I wouldn't run a flat tappet cam these days. ... Voodoo Hydraulic Flat Tappet Cam & Lifter Kit - Chevrolet Small Block 268/276 SKU 10120703LK Hydraulic. The most awesome 268 cam ever produced! Out ...74 c10 350 comp cams CL12-210-2 kit summit noisey gear drive edelbrock performer carb ... looks like it does everything a mild treet cruiser would want but i would like to get you guys opinion or a better suggestion if you have one. ... 1956, and 1957 Chevy owners and enthusiasts. Come join the discussion about restoration, engine swaps ...350/350, RV cam, headers, 4 barrel Quadrajet carb. Anyone have any idea what the approx idle speed would be? Carb was rebuilt and idle is high. ... 1966 Chevy Caprice 2 door sport coupe 396 325 h.p. 95% original, matching #'s Th400, 2:73 12 bolt Original dealer invoice, title from orig. owner, Protecto-plate1.Comp Cams 54-470-11 Camshaft for 350 Chevy– Best Overall. SB Chevy B01N40WFI0 Cam & Lifter Kit– Seamless Sound. COMP Cams 12-602-4 Camshaft for 350 Chevy-High Compression Ratio. COMP Cams CL 12-206-2 Camshaft for 350 Chevy– Budget Friendly. COMP Cams CL 12-235-2 Camshaft for Chevrolet Small Block-Enhanced Throttle Response.Product Summary. 350, Long Block Crate Engine Type, 326 ft./lbs. Torque. Engine comes with a 24 Month 50,000 mile warranty. Includes provisions for both RH and LH oil dipstick. Puts out 290 hp 5100 rpm and 326 lb.-ft. of torque at 3750 rpm. Contain a 2-piece rear main seal and has a 1.5:1 rocker arm ratio.454C10. 4018 posts · Joined 2004. #6 · Mar 30, 2012. forget the 1.6 rockers. use 1.52's. get a regular edelbrock rpm intake (not air gap) and a holley 750 3310 carb ($250 from summitracing). the 270H or 280H is a good cam for a 3.73 gear. 4.8 gear would be too much. A 10 inch 3000 rpm lock up converter would work well.Fred ,even with a mild aftermarket perf cam you need the following setup (lower in my post) which is a good place to start for a street perf ign timing curve with your cam & motor. BTW,THAT COMP 12-600-4 IS A "THUMPER CAM "THAT HAS 227/241 DEG DUR @.05 SO ITS MORE CAM THEN YOUR TELLING US,NOTHING WILD BUT …Engine 3: Torque 400s 383ci. The 383 small-block has become incredibly popular in the small-block Chevy market. This is especially because the cranks are virtually no more expensive than a standard stroke 350 crank. The only expense increase is in the material choice, from cast to 4340 and on up the food chain.There are several variations of the Chevy 350 engine that come with different horsepower ratings. Chevrolet indicates that the deluxe model of its small crate engine has 290 horsep...- 12551705 350 LT1 93-95 roller 201/.447 intake; 208/.459 exhaust; LSA 117 (TBI loves this cam because of the 117 LSA it will also accept 1.6 rockers without issue) - 12551142 350 LT4 95-97 LT4 203/.446 intake, 210/.450 exhaust; LSA 115 (with more duration and lift with less LSA this cam is a bit edgy with the stock programming, especially if ...Chevy SBC 350 5.7L HP RV 420/433 Lift Cam Camshaft & Lifters Kit Torque MC1730. Recommendations. Chevy SBC 350 5.7L HP Stage 3 458/458 Lift Cam Camshaft & Lifters Kit Timing. dummy. Elgin TEK-401 Top End Kit. dummy. Chevy SBC 350 5.7L HP Stage 3 443/465 Camshaft Lifters & Timing Kit MC1988. Try again! Details .This Cam-type features a 2000-5800 RPM OperatLunati Voodoo Hydraulic Flat Tappet Cams
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C3 Tech/Performance - Spec. on 350/350 GM style cam - First encountered this cam on a 1969 Corvette 350 ci with 350 HP. Ran great with 4 spd trans. Need to know what the spec's for that cam is and how it might compare with other cams now out there. Engine is 350 bored 040 over KB pistons w/valve relief one side.With 124 Small Block Chevy 350 Cam Kits for sale, and options to fit your needs including custom, direct fit, and universal Cam Kits for your application. We stock products from the best brands on the market such as Speedway Motors, Howards Cams and COMP Cams. Speedway Motors has the best Small Block Chevy 350 Cam Kits online.I am considering upgrading from the stock camshaft in the crate 350 engine in a '77 Chevy K20 4x4. The truck is pretty much bone stock. The engine has a Quadrajet carb and an Edlebrock Performer RPM intake. The transmission seems to have a shift kit (tends to shift a bit firm), but the torque converter is probably stock.Chevy 305 327 350 400 Cam+Lifters+Springs Stage 2 Street Perf Kit 218/218 @050 (For: Chevrolet) Opens in a new window or tab. Brand New. $327.84. ... Chevy 305 327 350 400 Mild Street Performance 214/214 at 050 Hydraulic E1029P (For: Chevrolet) Opens in a new window or tab. Brand New. $145.37.Italian auto giant Fiat is placing another big bet on the open-mindedness of American car buyers. Next year, it will launch a new sports car in the North American and Australia-Pac...76cc heads. Edelbrock performer #2102 cam lift int .420"/exh .442". Edelbrock performer 1406 600cfm carb. Edelbrock 2101 performer intake. Stock 5.7" rods. Standard Fel-pro head gasket. I plan on having the machine shop bore and hone the cylinders (probably to .030 over but I won't know until they check it out), align-bore the mains, install ...This product was created with tiny blocks in mind, such as the Chevy 350. From idle to 5500 RPM, this product will function. As a result, you won't need to rev the engine to get that lovely engine sound. Although 5500 RPM is respectable, it pales in comparison to the 6400 RPM achievable with the Comp Cam camshaft.Or at least with minimal mods. I'm NOT looking for max HP, just a good running truck with maybe a bump in fuel economy. Found an Edelbrock flat tappet cam at Advance Auto... $211 for the "kit". Exact Fitfor your 1990 Chevrolet C1500. Performer-Plus Camshaft Kit; Chevy 305-350 TBI; Hyd.; Off-Idle-5500rpm; Adv. Dur. 244deg. Int/264deg.Camshaft, Hydraulic Flat Tappet, Advertised Duration 288/298, Lift .444/.466, Chevrolet, Small Block, Each See More Specifications | Check the Fit. Summit Racing™ Classic Camshafts SUM-1103 SUM-1103. ... Mild vs Aggressive Camshafts. Summit Racing Camshafts. Overview. Brand: Summit Racing.Follow these steps to Set Timing on Chevy 350 without Timing Light: 1. Remove the Spark Plugs from The Driver Side Cylinder. Put your finger over the hole and manually turn the engine over until you feel the compression stroke. Turn the key and wait for the engine to start.Like. 75gmck25. 3029 posts · Joined 2006. #4 · Dec 30, 2010. In that timeframe the stock 350 in a truck was only rated at about 160 HP, and the stock cam was very conservative. I've seen the specs a couple of times, and I think duration was about 185 at .050. The "hot" cam of that era was the GM 929 cam, and even that was only 195/202 …First off new engine specs, 350 sbc, world sportsman 2's, edelbrock eps intake, holley 600 vacuum secondary, 260/270 212,218 @ 50 (custom hydraulic roller cam made after the lunati 60120 voodoo cam) 510/510 lift with a 106 center line with 112 LSA and is 6 degrees advanced. Timing is set at 16 mechanical and with full manifold timing with ...You may prefer the 60103 (268) at 9:1. Steve. 1968 that started life and a 6 banger with a PG. Now it's a 350 Holley Terminator EFI with a TKO600, Moser 12 bolt (3.73), Speedtech LCA/UCA, ATS AFX Spindles, Hotchkis Springs, Forgeline ZX3P, C5 (Kore3) brakes with other cool stuff. Check it Out Here.Description. Source. Price. Chevy 350 short-block. ebay Motors. $1,349.95. AFR 195cc Eliminator Street Heads #1034. eBay Motors. $1,648.03. Comp Cams 12-467-8 280XFI hydraulic roller cam sbcPutting 305 heads on a 350 was a good way to bump compression back in the day when compression was low, and aftermarket heads were almost "unattainable.". Those days are long gone, and decent heads (be they aftermarket or Vortec) are cheaper than getting work done on old heads. And 305 just don't flow all that well stock.Since Chevy had spent a few dollars promoting the 396 in the 60's, the 402 was still called "396" from 1970 to 1972 and was installed in cars like SS Camaros, SS Chevelles, SS Novas and yes, trucks as 396's were in the 60's. And of course to confuse matters worse, Chevy began the 10 year SB-400 campaign also in 1970.Chevy 350 carborated mild cam 64cc chamber heads 2.02 s the engine fires on all 8 when first started the longer it - Answered by a verified Classic Car Mechanic ... I have a early 70's chevy 350 engine with a COMP CAMS SBC 268 XTREME ENERGY CAM CL12-242-2 with a summit 650 electric choke carb (holley look alike) ...C3 Tech/Performance - Spec. on 350/350 GM style cam - First encountered this cam on a 1969 Corvette 350 ci with 350 HP. Ran great with 4 spd trans. Need to know what the spec's for that cam is and how it might compare with other cams now out there. Engine is 350 bored 040 over KB pistons w/valve relief one side.Camshafts For 350 Chevy Comparison Chart; 3 Best Camshafts For 350 Chevy (as of May, 2024): 1. COMP Cams CL12-600-4 Camshaft For 350 Chevy – Best Top Pick …Hi everyone, I have a 78 chevy c/10 w/ a 250 hp crate motor( 350 v8) stock 76cc cast, 8.5 to 1 and a lame stock cam. I already added a edelbrock performer rpm intake w/ a 600 cfm carb, dual exhaust, 700r4 tranny w/ a shift kit and 2400 stall. Want to up the lame cam and heads to make this run even better.The engine began life as a Goodwrench 350 crate engine that we pumped up with a mild Summit Racing hydraulic flat-tappet camshaft and then abused with a 150hp nitrous hit. The cam and nitrous were ...I have a 78 chevy 4x4 with a 350, mild cam, vortec heads, high rise intake, and hei ignition. i dropped the motor in - Answered by a verified Chevy Mechanic ... what size mild street and strip cam do I need for a stock 1998 5.7 chevy 350 with 12558062 vortec heads and what other components do I need to change and I am converting it to ...First off new engine specs, 350 sbc, world sportsman 2's, edelbrock eps intake, holley 600 vacuum secondary, 260/270 212,218 @ 50 (custom hydraulic roller cam made after the lunati 60120 voodoo cam) 510/510 lift with a 106 center line with 112 LSA and is 6 degrees advanced. Timing is set at 16 mechanical and with full manifold timing with ...It has 24cc reverse dome pistons, Scat 5.7 rods, Scat crank, EQ vortec style cast iron heads, Edelbrock performer RPM Q-jet intake, Q-jet carb, 1 3/4 " headers, and an HEI ignition. This motor is a little over 9-1 compression and is a street driven motor only. It is going in a 51 Studebaker pickup that weighs around 3200 pounds and has a turbo ...My truck is a 1974 c10 longbed, with a TH350 transmssion and a 12 bolt rear axle with 3.73 gears and the factory locker. The motor is all stock 350 4 bolt main with a 4bbl quadrajet carb. The truck drives nicely and has power, but you can tell the stock cam is chocking it up and get horrible economy. My 4,800 pound 472ci Cadillac gets better ...In the Goodwrench Quest articles, these heads on that 350 with a Comp Cams 268 Xtreme Energy flat-tappet hydraulic camshaft pulled off 336 hp at 5,300 rpm with a peak torque of 377 lb-ft at 3,700 rpm.High-rpm power may accelerate a dedicated strip machine to the fastest speed, but a hefty torque curve will definitely lay the stoplight smackdown on a race engine every time. Engine Specs ...Re: 350 TBI Cam. by mt-engines » Sat Dec 21, 2019 4:31 pm. The LT1 B-body cams work great with no tuning in the TBI engines. If California emissions allows a EBL modded pcm, you can run just about any camshaft you want, 2 widebands. And it will pass with a camshaft in the [email protected] will pick up almost 50 hp from stock.More than this will require a larger camshaft to keep you out of. detonation and it will kill the low speed power you want. Pistons with a 12cc d-shaped relief for the 350 and an 18cc relief for the 383 with a zeroed deck and a 0.041" thick gasket will put the comp. ratio at 9.7-1 for both engines. Edelbrock Performer-Plus Camshaft Kit Small Block Chevy 305-