how many zl1 motors were made

Paul e · #1 12-03-2005, 06:25 PM

It seems that there are more 3946052 ZL1 blocks popping up on ebay every day. From what I understood there were only 69 camaro's and 2 corvette,s and maybe 18 or so over the counter motors. And how do you tell if it is a over the counter motor from one that came in a car from a can am motor? I own one that doesnt have any dates or vin #'s on it, just a cast number. Mine came from Washington state and has a history of being in that state for at least 25-30 years or so.

[image]http://www.pbase.com/paule/image/51956005[/image]

Canucklehead · #2 12-07-2005, 07:55 PM

Wasent there a bunch made for boats?

**PeteLeathersac** · #3 12-07-2005, 10:45 PM

Just thinking about the GM repop ZL1 blocks and wondering if any are being passed off as originals? . Here's a link below to one supplier. ~ Pete

http://69.20.110.81/index.asp?PageAc...p;ProdID=22582

x44d80 · #4 12-08-2005, 06:46 PM

Probably not. The originals had nice sand cast dates in them. I dont know if the new ones do but if they do I dont think they'd cast in a date of 1969. Plus the new blocks are redesigned for strenght. The old blocks are really cool but Grumpy Jenkins called them "junk"

**firstgenaddict** · #5 12-09-2005, 11:52 AM

The new blocks have screw in freeze plugs, and a few other updates but they are cast from the original molds. I remember reading about when the guy found them in the Winters Foundry. Said that they were in almost perfect shape as not too many blocks were cast in relation to useful life cycle of the molds.

**PeteLeathersac** · #6 12-09-2005, 05:49 PM

What a find that was! . So do the new ones have the Winters Foundry casting mark....and what's the head situation? ~ Pete

**SuperNovaSS** · #7 12-09-2005, 08:31 PM

The old blocks have screw in freeze plugs as well.

Jason

69SSRSL89 · #8 12-10-2005, 02:42 AM

Has anyone used one of these new ZL1 blocks? I was thinking of building a motor with one as a base but was wondering how happy people where with them. Are they good quality for the money? I know that I could probably cover the cost of most of a crate 502 for the price of a new ZL1 block but that all aluminum block heads and intake would look sweet when you open the hood not to mention the weight difference. I thought that I had heard at SCR8 that COPO PETE's white copo has one of these in it and that thing fly's. If anyone has any information on these or knows anyone that has worked with them I'd appreciate hearing about them. Thanks in advance.

Jesse

**69SSZL1** · #9 12-11-2005, 07:39 PM

I do have one of those new blocks. I built a complete ZL-1 engine with ZL-1 heads,manifold,carb,distributor, and NOS Zl-1 cam,pistons,crank,rods,etc. and run it in my 69 SS Camaro. The block is outstanding quality, the engine is the same weight as a small block. The new block has the early ZL-1 casting number 3946053 and no "Winters" snowflake on the front.

PLATINUM6BBL · #10 01-27-2006, 01:28 PM

I know a guy that has 7 of the original ZL-1's. One is out of his 4000 mile orange ZL-1 Vette and the other 6 were over the counter

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