Join Date: Dec 2007
Location: Denver Colorado
You are missing a number. Should have 7 digits. Look for the date build code. Passenger side of the block behind the dist look for a flat pad, it will be stamped there. Report back with the numbers and the letter. 81 block casting # 3235444 but that is for a 81-85 and a 86 and a 87-89, but there are some differences in the blocks even with the came casting #.