Quote:
Originally Posted by Cliff R
...........One of the last 428's I did ............ I used a custom ground Comp Cam with XFI lobes with .361" lift, 236/242 @ .050" with 1.6 ratio Crower Enduro rockers. .............. but you need to put some cam in them as they like to rev............Cliff
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What was the LSA on that cam? And installed at what ICL? That's about what I'd like to swap with my current cam.
The 428 in my '66 GTO has a custom cam with cam card attached below, 114 LSA installed at 110 ICL. I have 1.5:1 rockers. Crane made it for me back in 1996 or so. According to 1/4 mile MPH and ET calculators, it makes in the neighborhood of 550HP. And loves to rev. This engine has 72cc E-heads, Doug's headers, and EFI. CR is 11.4:1 and works fine with 91 octane. (with this cam, might be too much with less cam)
As well as this cam performs, it's too much for the street and I'd like to take it down a notch or two. Exhaust stinks with the modern fuel we have now, probably because the exhaust valves open so soon.