About the ZL-1 engines

[sYc Yenko]

Thanks Ya'll, ya helped me out alot [img]/ubbthreads/images/graemlins/beers.gif[/img]

[Eddie M.]

From what I been told GM had 500 ZL1 blocks made and only around 300 made it out the door because of casting flaws but don't hold me to this.This is just what i heard [img]/ubbthreads/images/graemlins/dunno.gif[/img]

[sYc Yenko]

I saw a ZL-1 block on the net, And it had a Yenko stamped logo on the frunt, That what cunfused me
Cheers [img]/ubbthreads/images/graemlins/beers.gif[/img]

[Turbo_Jet]

I believe Don Yenko sold aluminum blocks over the counter through his dealership in the mid '70s. That is most likely what you saw. Dan [img]/ubbthreads/images/graemlins/[/img]

[69LM1]

There was a early 70ish yenko block on ebay, oh about 2 months ago I think. Can't remember what it went for, but it was up there (12-15k I *think*).
It had what looked like the yenko stamp cast into the block.
Rich

[jfkheat]

Last one I saw on Ebay sold for $14,000. Here is the link.
James

http://cgi.ebay.com/ebaymotors/ws/eB...category=33615

[Unreal]

Looks to me like the Yenko Crest was ground off....I suspect because a "real" ZL1 would be worth more than one maked from one of Yenko's racing motors.

[jfkheat]

According to the info I have, the casting # on the block is a 69 ZL1. Did the later blocks have the same casting #?
James

BLOCK:
#3946052 1969 427 430 ZL-1, 4 bolt, aluminum

HEADS:
#3946074 1969-71 396,402,454 375 L-89, 427 430 L-88/ZL-1
Open 118.0 425, 465 LS-6/LS-7, round ex