My 422 smallblock build

SSG_Karg said

Any thoughts on this one?
Check out this page from Summit Racing Lunati Voodoo Camshafts 40200733

I have heard that the large cubic inch engines will actually make a cam “seem” smaller than it would in a stock displacement engine, effectively lowering the basic operating range by approximately 500rpm. Is there any truth to that?

Click to expand...

I don’t get the big split, but if you had Lunati pull it back to 108, maybe 107 it would lower peak RPM a bit and help with all that at .050 timing.

Again, not to beat that dead horse into mush (que Jpar for the emoji) but consider your heads were designed in the mid 1970’s and should be treated that way when you select a cam and really everything else.

The exhaust is very very good and I can’t think of a reason to add exhaust duration and then open up the LSA.

The best all out LSA for those heads is always 109 unless you have a powerglide and then 111 and then maybe.

For less than an all out deal, 107 or 108 is much better. I can make the arguement with that much timing you can run that cam on a 106 with a 4 speed and it will melt your face in the lower mid range.