I'm looking for some roller rockers but dont really know if I should go with 1.6 or 1.5, my minds telling me 1.6 because of the gaining more lift. As if right now, this is for a 84 Monte Carlo SS, the motor in it now is a 350 with 76cc what a guy called "bathtub heads", Xe274 cam, 600 edl. carb., edl. RPM Air Gap intake,B&M 2400 holeshot stall, 3.73 gears. I just bought a set of Sportsman II's 64cc 200cc for 500 bucks with the setup it has now my best was 14.50@94 1/4 mile. Would I see much of a difference if I went with 1.6 or 1.5, how much of a gain am I looking at with the head swap and rockers depending on which ones? A fella offered me some Cam Dynamic roller rockers, ive never heard of em before. Sorry for the long post, let me know if i missed anything. thanks.

That's a good buy on the Sportsman's but I think 200 cc runners are a bit much for your current carb, cam, converter combo. For that reason, I'd go with 1.5 rockers. I don't think 1.6's will show any significant improvement for you. I though Cam Dynamics was out of business but I googled them in FL. It could be another company though. They did make a very good product.

Cam dynamics is long gone... swallowed by Crane IIRC many moons ago. I still have a solid-roller Cam-Dynamics blower cam I would like to have copied. But will be a long time before the Vette project starts:crazy:

What if I went up to a 670 or a 750, would that fit good on there. I'm just trying to get into the 13's with a heavy a$$ car.