By the last pic of those heads....I think those are pretty good 'old school' heads.
I think those are called '186' casting heads...similar to the 041 heads.
Those were mostly found on the higher hp small blocks in the '69 and '70 years.
The upside of those heads (if they are the 186 casting) is that they have the higher compression 64cc chamber (vs. 76cc std. in the trucks) and the front accessory holes which are needed for the factory mounting of our alternators, a/c, etc.
Are you having those rebuilt or just re-using them?
Are the 2.02" intakes or the 1.94"?
Coley
