My 422 smallblock build

SSG_Karg said

Could you elaborate some on this. I went to the website you mentioned and input my numbers but I’m not sure I understand how to interpret the info. My timing set is adjustable up to 8 degrees each way so putting it in 2 degrees retarded would be easy.

Click to expand...

Put in all your info into the program and then add the 4 degrees advance where it asks for it and look at the “overlap triangle” where the exhaust closing side of the lobe crosses the opening side of the intake lobe at TDC.

IMO (and the opinion of others) when you are looking for the best power and you have good headers and such, you don’t want the intake lobe crossing the exhaust lobe before TDC.

When I did your numbers, at 4 degrees advance the triangle was ahead of the TDC line. At O degrees (what I call straight up) the cam is slightly retarded. But...at 2 degrees advance the triangle is centered.

I’ll see if I can post up the stuff here, but I doubt I can.