Stock 1/4 Mile performance of ZL-1 or COPO

**Stefano** · #1 05-10-2002, 08:04 PM

J Rod,
Is 11.04s close enough (eight inch slicks were used as well as open headers).

This was the 'Drag Times' Yenko article and thus used the lower performance L72,not ZL1.

JoeC · #2 05-10-2002, 11:23 PM

Dick Harrell tested a 1969 ZL1 Camaro with 4:10 gear and TH400 trans in Super Stock magazine May 1969. The car had open headers, rear spring clamps, and 6 1/2 inch slicks. The remainder of the car was stock. It ran a best of 11.64 @122.15. Harrell commented that the tires were completely inadequate.

Chevy454 · #3 05-10-2002, 11:27 PM

Stefano:

I don't have our copy in front of me, so don't kill me if I'm worng, but I was thinking the Yenko L-72 ran an 11.94? Still, pretty quick for such few mods.

Harrell did test a "stock" ZL-1 somewhere...I will have to dig it up.

What a lot of people don't realize though, is that the slicks back then and the slicks today are light years apart. B-I-G difference.

**Charley Lillard** · #4 05-11-2002, 01:07 AM

My ZL1 was Tested when new and ran a 13.16 @110

COPO PETE · #5 05-11-2002, 01:29 AM

Sorry Charlie, but that reminds me of a VW commercial.....Drivers Wanted!

Actually that is a prettty decent time!
Peter

[Edited by COPO PETE (05-10-2002 at 07:29 PM).]

JoeC · #6 05-11-2002, 02:57 AM

I agree with Rob it was 11.94 on the Yenko and it had a bad clutch when they tested it. If I remember correctly it was the gold Yenko Camaro with the wierd emblem on back.

When Charley's ZL1 was tested it had the wrong Holley on it. It came from the factory with a 780 vac sec but should have had an 850 DP. It may have knocked off a few tenths or at least picked up a few mph.

**Stefano** · #7 05-11-2002, 04:14 AM

OK guys when I am wrong I'll take it like a man, but I picked the info up from our own site <A HREF="https://www.yenko.net/oldads/yad11.jpg

" TARGET=_blank>https://www.yenko.net/oldads/yad11.jpg

</A> While slightly opimistic I agree, we all know that if it is in print on this site it must be accurate.

I did dig up a couple of magazine reprints/reruns of the same article and they do say 11.94 @ 114.5 mph.

The #3 ZL1 could have turned in better times but for the fact that, Clill was the test pilot. Look at the pictures, it's him 33 years ago

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