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ZL1 Aluminum Big-Block

ZL1 Aluminum Big-Block


SKU 12370850-web5000

ZL1 Aluminum Big-Block


These Chevrolet Performance ZL1 aluminum engine blocks feature an improved design of one of the rarest production engines ever built--the ZL1 aluminum big block used in 1969 Camaros and Corvettes. They feature a new casting made from 356-T6M aluminum alloy and have a 4.240 in. cast iron liner that can be bored to 4.300 in. The engine blocks allow for crankshafts with a maximum stroke of 4.375 in. and held in by 4-bolt splayed steel main caps.

Other highlights include:

* Thread-in freeze plugs with O-ring seal
* 2-piece rear main seal
* Provisions for wet or dry sump oiling systems
* Provision for mechanical fuel pumps
* Compatible with all types of cylinder heads
Additional Information

Additional Information

Car Model N/A
Model Year N/A
Oversized N/A
WARNING: California Proposition 65