Senior Tech Team
Join Date: Jun 2009
Location: Pittsburgh, Pa.
Re: Size of cam??
I have that motor in my 69 el Camino. Its a brute torque wise, I love it and wouldn't change a thing, except I would like to run a short duration, wide lobe separation mechanical cam in it.
I find mine runs best with no vacuum advance and the initial set at 22 with the mechanical set for 14 all in by 2300 rpm.. Mine runs like a bear like this and on 87 octane.
This motor has caused me to change my whole way of thinking as far as needing 10:1 compression and 308/320ish cams.. I wasted a lot of time on high compression, expensive premium gasolines and those miserable, long duration, lumpy cams that idled like a Model T.. This is the first motor in 20 years I didn't have to chain down because of vibration braking the motor mounts.