When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
i think 85 and up got the center bolt valve covers, one piece rear main seal, and roller cam. other than that theyre still basic gen1 small blocks. you can run perimeter bolt valve cover heads on it. makes no difference.