This item has been shown 86 times.
GM Big Block 3963512. Condition is "Used". Local pickup or get a shipping company for pick up.
Big Block Chevy 4 bolt main, 3963512. A5. 71. Was just disassembled last week, motor had great oil pressure. Bore 4.310, has some thread inserts and the block is O-ringed.
Will make a good package deal on block and GM aluminum snowflake heads. #14011077