Thread: Need advise on cam

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That's just the way that a naturally-aspirated build works. More compression needs more cam which needs more gear and more converter. Keeping the static compression ratio down around 8.0:1 or 8.5:1 and bolting on a blower or turbo, you can make more power with less cam, less compression, less converter and less gear because you're forcing the mixture into the motor under higher artificial pressure rather than depending on natural atmospheric pressure to push it in. Even a modest 6 psi boost will increase power by at least 40% over naturally aspirated.

You could also make more power naturally aspirated by using better heads and more cubic inches. You could then keep the static compression ratio down, using less cam, gear and converter. Those production iron heads were designed for taking the family to the grocery store once a week, not for making the power that you're seeking. A set of Profiler 185 aluminum heads bolted to a 383 short block would make a heck of a difference. You could build her at 9.0:1 with a short cam and rip the tires off.

You're going to leave about 30 horsepower on the table with that short intake manifold and 600 will not be enough carburetor. Any 350 needs a 750 to make max power and a 383 will want an 800. Best intake manifold will be either a Weiand 8150 or an Edelbrock 7101. Do not use the Edelbrock Air Gap, or any other air gap manifold, as there have been cool weather drivability problems reported. Use the regular 7101 or the 8150. If you want to use a used intake manifold for less cost, you can also add a discontinued Holley 300-36 and Weiand 8014 to the list. I've seen them on craigslist, racing junk and other used parts sources.

Here are a couple of tutorials that I wrote several years ago that may help you.....

http://www.crankshaftcoalition.com/w..._compatibility

http://www.crankshaftcoalition.com/w...ips_and_tricks

http://www.crankshaftcoalition.com/w...op_dead_center

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