I presently have a 68 camaro with a four bolt main 350.It has a forged crank, forged speed-pro 9.72:1 pistons with four valve reliefs, and presently has a Comp Cams 268H cam with 218 degrees intake and exhaust at .050 and .454 lift intake and exhaust. My heads need major work so I am considering switching to the S/R Torquers with 67cc. Question is, should I change the cam, and if so what too?
What kind of horsepower could I expect with this setup and an edelbrock intake with either a 600 cfm or a 750cfm carb?

Aftermarket heads are the way to go. If I were in the market for a new cam I would go with either one of the Comp Cams extreme cams or an Isky Mega cam. The Comp would be more for street and cruising, the Isky for performance. Either company should be able to answer on their tech line. Good luck.

Steve R.

For a street car, you already have one of the best cams you can buy... COMP 268H. I've had this grind in two engines, one a 327 and one in a 350 similar to yours. I was always happy with the results.

I aggree with Steve R. aftermkt heads way to go. if you can afford go aluminum...they already have stainless valves and seats to survive the new gas. You have the right cam but again if buget allows consider comp cam magnum rollor...quicker throttle response, less friction = more hp and more mpg.

Thanks for your help.
I decided to go with the S/R Torquer heads and keep my camshaft the same for now. Any suggestions on whether I need a 600 CFM or 750 CFM carb?

I think I would get a Holley 750 vac. secondary, part #0-3310. This is a good all around choice, it is a vac. secondary for good throttle response. It is inexpensive too, $219 in Summit. Spend a little more and get the secondary spring kit. 600 cfm carbs work ok, but it seems to me that people usually get them when they change manifolds and want a the cheapest square flange carb they can get.

Steve R.