RE: Camaro engine code information

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RE: Camaro engine code information

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Camaro Forum >> Camaro Models >> 1st Generation >> SS/Z28 >> RE: Camaro engine code information

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RE: Camaro engine code information - 1/28/2008 11:58:22 AM

MichiganMan

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quote:

ORIGINAL: Ircyklops

This page somewhat verifies that is uncommon, but possible to have a 3959512 block in a '69 Z/28...

http://www.camaros.org/drivetrain.shtml#BlockCast

correct now look at the pics you dont find a dz stamped block on any 327 period! that is a factory stamp its a 302 engine and it is for real its not the only one out there either also there are 350 512 blocks. I just would like to say that CRG has the most well know camaro guys in the country that not only put that site together but have verified this motor dicussed here as an factory original 302 dz

< Message edited by MichiganMan -- 1/28/2008 12:04:46 PM >

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(in reply to Ircyklops)

Post #: 21

RE: Camaro engine code information - 3/10/2008 9:20:13 AM

1stGenFan

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I picked up one of these short blocks at a local swap meet this weekend & went looking to see what I could find on it. I could not find a 3959512 block listed in any of the Chevrolet by the Number series. So I did a search & found this post. Here's the details: Original shortblock only has been decked so there are no stamped numbers left to read. I should mention here that the guy that I bought it from had torn it down & bored & decked the block. He insisted that the block & crank appeared to have been together all of the engines life. It is a 2-bolt block. Block casting date is I*20*8 which should be September of 1968. 1969 model year. The guy had been told that it was an early 327. But it is a large journal engine. And it is not an early 327 date. Crank casting number is #1182. And that is where it got a little more interesting. According to Chevy by the Numbers, the crank is listed only as a 1967 350/295, forged steel, large journal, aaaaaaaaannnnnnnnnnnnddddddddddd (drum roll) Z28 Camaro only! So at the very least Chevy by the Numbers has a missprint somewhere here. Anyone else have any thoughts on it?

(in reply to MichiganMan)

Post #: 22

RE: Camaro engine code information - 5/19/2008 6:31:09 PM

Trbomike

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I'd like to share some information on a 3959512 motor that I have in my possession and have known since 1971. It is a CE motor and was put in my 65 Nova in very late 69 or early 70 to replace the fried 327/300. It is a factory 2 bolt small journal, casting date J29, canister oil filter, and it came with domed pistons. It is not a Chevy II block.

I know this because I bought the car from the 2nd owner in Dec. '71, who had to replace the motor @ ~58,000 miles. I got the car with ~73,000 miles on it.

Now I'm starting to wonder if it's a 327 (that's what I was told) or what?

I apologize for being off topic (Nova/Chevy II), but I have been searching the web for information on this motor and came across your forum.

Mike

(in reply to MTH trains)

Post #: 23

RE: Camaro engine code information - 5/19/2008 6:57:07 PM

Camaro 69

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3959512 casting was only a 327 block, 1962-67, and was also used as a replacement block.
http://www.chevy-camaro.com/chevy-camaro-chevy-engine-block-codes.asp?group=1

(in reply to Trbomike)

Post #: 24

RE: Camaro engine code information - 5/21/2008 3:56:09 PM

Trbomike

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No argument that all the resources we've seen/have list the casting as a 62-67 block. I have let Mortec know that this block was cast in October 1969. To others on the list, I was advising them that this block came with domed pistons. It was a factory CE replacement block.

Question: how do I locate the crank casting number?

(in reply to Camaro 69)

Post #: 25

RE: Camaro engine code information - 5/21/2008 4:24:10 PM

Camaro 69

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quote:

ORIGINAL: Trbomike
Question: how do I locate the crank casting number?

http://www.chevy-camaro.com/parts/chevy-camaro-part-codes-crank.htm

(in reply to Trbomike)

Post #: 26

RE: Camaro engine code information - 5/21/2008 7:43:29 PM

Trbomike

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Sorry for not being clear on my request. The crank is in the motor. Where do I look for the numbers on the crank? or does the crank need to be out? Thanks!

(in reply to Camaro 69)

Post #: 27

RE: Camaro engine code information - 5/22/2008 12:40:15 AM

Camaro 69

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You at least need to have the oil pan off to see the numbers.

(in reply to Trbomike)

Post #: 28

RE: Camaro engine code information - 5/22/2008 4:12:54 AM

Trbomike

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I have it out and down to the shorblock. Pan is off.