YENKO stamped ZL1 engine in BaT
 

Thoughts? https://bringatrailer.com/listing/chevrolet-zl1-v8/

Wow!!!

I think we've seen YENKO stamped aluminum big blocks here before, and IIRC, they have no additional value as opposed to a non-stamped aluminum big block :dunno:

I’ve seen the later blocks with YENKO cast in raised letters, I hadn’t seen an early one stamped before. Easier to stamp one than add characters to the mold obviously:)

LC Snowflake
Charley Lillard found one of these blocks 15 years ago and he posted pictures of it here on Yenko.net.
The story was.
Don Yenko dident like ZL1 blocks so he had LockportCasting make 20 blocks for him.
Don Yenko used them in his Roadracing Corvettes and Camaros.
They were cast in 1969

In the comments, the seller claims the block is an early unit since it has press in freeze plugs and the screw in plugs came later. In my experience, the original blocks have screw in plugs.

Jason

I have pictures of another LC snowflake Block

Also I have one picture of a one that looks like Bill Porterfield sent to Charley

Here is a Yenko Block that HBC claims is a 69 Block