I would think you're going to be on the money at more like 32 or 33 degrees. I also think if you're running your stock heads that your timing may be too far advanced if it's 36 degrees total advance based on your post. and adding aftermarket really isn't worth much if anything in terms of power. the load required to displace water and overcome the friction is just too great.Īlso, the thunderoblt ignition system is a good ignition. incremental changes in power don't make major changes in speed in a boat. that would require an increase of over 100 horsepower. if gear ratio is constant and we assume that slip doesn't change much, a change from a 17" prop to a 21" prop and pulling the same engine rpms equates to somewhere around 12 miles an hour increase in top speed. COMP Cams Magnum 270H Hydraulic Flat Tappet Camshaft Small Kit Lift. No more than a good old CC 268HE or 270 Magnum and Isky 270 Mega is all. The factory bump stick in a marine engine really isn't so bad that only a different cam is going to make a dramatic change by itself. The Chevy 350 Thumpr Cam- COMP Cams 12-602-4 is the best roller cam for 350 with. dry headers and aftermarket heads are a different story. Find CHEVROLET 5.7L/350 Chevy small block Gen I COMP Cams Camshafts and get Free Shipping on Orders Over 109 at Summit Racing. spit pattern would probably be a good bit better. Camshaft, Hydraulic Roller, Duration 270 Int./270 Exh., Lift 0.570 Int./0.541 Exh., Lobe Separation 118, Chevy, LS, 3-Bolt, GEN III/IV, Each. I agree on single pattern cam - especially with anything that looks remotely like a factory exhaust system. Comp Cams Magnum Hydraulic Flat Tappet Camshafts Questions - page 2 y. Will the stock pushrods work with this cam. that's a decent cam and should make a good amount of power, but if you've got factory heads that'll be the main bottleneck to making much additional power. So Comp cams cam kit with the 270 duration 470' lift gives me a 'smooth' slight choppy idle 700 rpm with 18inHG 10 BTDC Paired. 470 Int.What I have says stock merc flat tapet cam pn 431-5943 that was put in most 350s is: 0.05 duration (intale/exhaust) 200/212, lift. Note:Hyd Flat Tappet 1800-5800 RPM Adv.Dur. V8 GAS OHV Naturally Aspiratedĥ.0L 305Cu. Read more Read more compatibility notes Read less Read less compatibility notesĥ.7L 350Cu. Mfrlabel:Magnum(TM) Engine Camshaft and Lifter Kit 470 Int./Exh Lobe 110 deg Incl Cam Lifters Stock Springs Cannot Be Used Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle RWD Note:Hyd Flat Tappet 1800-5800 RPM Adv.Dur. Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 270/278, Lift. This part is compatible with 3000 vehicle(s) Notes
0 kommentar(er)
