Stick Racers !!!

[DeuceCoupe]

Originally Posted by Stan Weiss

Did you ever see this thread?


"Old School" Stocker Cams

http://classracer.com/classforum/showthread.php?t=75027



A few things were done by Lunati. NHRA checked lobe lift. The Chevy cam used a valve lash of 0.030" By reducing the lash ramp height they were able to add both duration and lift. Also if you look at my original post you will also see a picture and how dwell was added at max lift.


Stan

Great thread thanks.

I thought the "stocker" (cheater) cams would have more duration at .050 though. Looking at the graph on pg8, it looks like the .050 duration is about (295-55)=240, which is actually less than the stock early Z28 duration of 254 at .050, right?

I get the idea, and that thread discussion confirms it - I just thought the graph would show fatter numbers at .050 and even .100 lobe.