Originally posted by Paul Kane
#1) If your 460 has D3VE-A2A heads, then simply swapping out to the higer compression (early-style) heads requires complete valve train modification as well.

#2) Switching to the higher comrpession heads will not alone get you all the power you may need, and further will increase your chances of detonation...which will require you to lift throttle.

#3) Stroke it! That will broaden your power range and power output dramatically.

If you must stick with a top end rebuild only, then the proer portwork and and a few other external bolt-ons would be your best bet, considering what you have to work with.

A lot of this depends on which year 460 you have.

Paual
The truck is a 78, but I have an 88 motor in it.