ZL-1 Engine Block Uncovered

[EZ Nova]

After "repairs" and set up for .904 Jesel solid roller lifters:

[EZ Nova]

Curious, what is the meaning or decoding of the 06017 in the last picture?

[69 Post Sedan]

Originally Posted by EZ Nova

Curious, what is the meaning or decoding of the 06017 in the last picture?

…….possibly June 1st 1987…..? Just a guess but those casting stamps are the same as later built parts…..from my experience.

Kurt

[black69]

Originally Posted by 69 Post Sedan

…….possibly June 1st 1987…..? Just a guess but those casting stamps are the same as later built parts…..from my experience.

Kurt

The one block I had that had the outside look like a stock block, but yenko stamp in timing cover area was a 74 I think. I would maybe venture this block was more like a 70s vintage block, hard to believe they would still make these in the late 80s? Which now begs the question, who owns the GM molds now? Joe parts has the molds to the cross-rams for the 302 as one example of a GM mold destination, but where are the GM molds to the ZL-1 yenko had.

[black69]

Look for potential Yenko stamping info in the timing cover area. It was still winters cast block with GM molds, but Yenko managed it. Its kinda cool if you find that, I had one. Wish I never sold the dam thing, I liked the Yenko aspect.