Need to know if this would work, have a 91 305 tbi engine that I'm swapping into an iroc, has about 88,000 miles, wondering if i could put aluminum heads on that were for another project but the 305 still has alot of miles left, the engine is stock, the heads were for a 400 sbc there pro comp, 64cc and 190 runners, wonder if it would work. Any help or advice is welcome thanks.

 

I think those heads would drop ypur compression by about 1 full point...I think the stock or zz4 heads are 54 or 56 cc.