SubCategory: Blocks & Parts
For Sale: Rare Original 1969 Chevrolet 427 Aluminum ZL1 Engine Block with GM casting number 3946052.

This is a 427 Chevrolet Aluminum block casting #3946052 dated 2-1-69.

The block has the Winters foundry “Snowflake” on the front of the block which indicates it to be a Chevrolet block and not a “Traco” aftermarket block.