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.
289 - same head
289HP - unique heads
302 - 68 J code had unique heads
351W - same head
351C - 2V had normal sized ports and valves, while the 4V had gigantic ports and valves