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Author Topic: DZ Block ?  (Read 4211 times)
Camaro Billy
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« on: December 11, 2006, 06:08:36 PM »

I was looking at a small block today w/ casting #3956618, casting date C 139.
It has been decked so no numbers on the pad.It has the 3941178 302 crank, I could tell by the crankshaft flange.The heads and intake are later pieces.
I found the VIN on the rough casting near the oil filter flange, but it was very hard to read.
The best I could tell was -
 19N627_14
Couldn't read the 3rd to last number but for sure starts w/ 627.
Is that enough info to see if the car might be in the data base?
What else should I look at to try and confirm it's a DZ ?
Thanks
Billy
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1969 RS/SS 350/300 Rallye Green . Black Vinyl Top
william
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« Reply #1 on: December 11, 2006, 07:34:18 PM »

There was no block casting specific to the 302 engine.

The castings used by Chevrolet to build them were also used for 300 & 350 hp 350 engines. The block in question did come from a Camaro but with the code gone there is no way to tell if it was a 302. Since it has been messed with the crank may not be original. 
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Ed Bertrand
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« Reply #2 on: December 11, 2006, 08:31:25 PM »

Billy,

Is it at least a 4 bolt block? If so, then it's either 1 of 3 things:

1. 350/300 (SS)
2. 302/290 (Z28)
3. Redrilled for 4 bolt mains

Ed
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rich69rs
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« Reply #3 on: December 11, 2006, 08:33:58 PM »

Seems like I recall a discussion in the past dealing with acid etching to try and bring out the numbers after the block (and pad) had been decked.  I did a quick word seach and couldn't find anything.  It may be worth a little research.
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Richard Thomas
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Steve68
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« Reply #4 on: December 11, 2006, 08:45:54 PM »

Here is a link to etching.  http://www.camaros.org/public/acidetch.txt

Steve
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Camaro Billy
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« Reply #5 on: December 11, 2006, 09:09:15 PM »

 Sorry I should of said it was a 4 bolt.
The owner had asked if I knew how to etch it. I think I can see a slight impression on the pad as it is.Those instructions are great.If we give it a try, I'll post back.
Thanks for the info.
Billy
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1969 RS/SS 350/300 Rallye Green . Black Vinyl Top
KurtS
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« Reply #6 on: December 12, 2006, 02:07:57 PM »

A few VIN's in the db close to matching, but none do.
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Kurt S
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Camaro Billy
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« Reply #7 on: December 12, 2006, 06:09:37 PM »

Kurt,
I took some photos and then blew them up.Still a little hard to tell, but I beleive it is-
19N627445
Here is a shot
Billy
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1969 RS/SS 350/300 Rallye Green . Black Vinyl Top
Camaro Billy
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« Reply #8 on: December 14, 2006, 08:00:23 AM »

Here is a shot of the crank.Can anyone confirm that it is from a 302 DZ block ?
Thanks
Billy
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1969 RS/SS 350/300 Rallye Green . Black Vinyl Top
JohnZ
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« Reply #9 on: December 14, 2006, 11:38:15 AM »

Looks like an 1178 crank flange to me.  Smiley
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'69 Z/28
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KurtS
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« Reply #10 on: December 15, 2006, 10:46:09 PM »

That VIN isn't in the db. One exactly 20 off from it is there, but close only counts in.....  Smiley
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Kurt S
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Camaro Billy
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« Reply #11 on: December 16, 2006, 10:15:53 AM »

Thanks again Kurt
Billy
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1969 RS/SS 350/300 Rallye Green . Black Vinyl Top
Jerry@CHP
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« Reply #12 on: December 16, 2006, 09:25:53 PM »

Billy,

Can you e-mail a photo of the vin stamping when you have a chance.

Thanks,

Jerry

z28camaroman@juno.com
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