john gill

Hello all

I am in the process of building my race car engine with the new camshafts from Colin and am interested in any updates on performance , clearance etc .

I notice that I have about 1.5 mm clearance to the lifter housing and the cams that I have do not have the most amount of lift that was available.

Has anyone any performance numbers that have achieved as there must be dozens of these sets that Colin sold , has anyone used any yet ?

Lizard928

On a GT with stage II w/ tri-flow, msds headers, dual 2.5" exhaust I saw 352rwhp on a mustang.
Same dyno I saw 329rwhp on an otherwise stock S4.

I saw 325rwhp on my own car with the cams advanced 8 deg, didn't get back onto that dyno to get another run done and that dyno (which I knew to be accurate), has since been sold and is no longer around. That was an X (not an efficient one), and rmb.

simos

You should be able to go well beyond 450ehp with Stage II and stock S4 valves, it's all about other components which will start limiting power much eariler, such as Intake..

The cam/valve combo limits can be easily calculated with Pipemax.