troythefixer

Hello, I'm finishing up the motor in my 73 vette, running 186 double humps and a 670 street avenger on a torker 2 manifold, but I can't seem to make a final decision on the cam. Its going to be a flat tappet cam. Would like to hear some suggestions on a cam and what you think the
final horsepower would be with this setup.....Tks...........Troy

marshrat99

Some may disagree but your cam selection should be matched to many things such as compression ratio, rear end gears, tire size, etc.

CaseyJones

Absolutely. A long duration cam in a car with 3.08 gears and 8.5 to 1 compression will be a real dog in traffic. It would sound good at idle, but your grandmother could out-run it for a little bit. 3.55 or lower (numerically higher) gears and 9.5 or 10 to 1 compression with a 214 to 224 degree duration cam and 445 to 460 lift would be pretty good. That's similar to the factory LT-1 solid lifter cam specs but I would recommend a hydraulic grind. A little lumpy\fussy around town but a lot of fun otherwise. A higher stall converter would be in order for an automatic (1978-ish Z/28 would work and be cheap, I assume) or a 4-speed would work OK as is.

Just my two cents...