engine identification

Reply Subscribe

Thread Tools

Search this Thread

Sep 23, 2013 | 10:50 PM

ch3098

Thread Starter

Instructor

Joined: Sep 2012

Posts: 119

Likes: 3

From: Casey IL

engine identification

Hi,
I recently purchase a 1969 corvette and I am having trouble identifying the engine. The casting numbers are 3963512, which I recognize, but the stamping is a different story. The stamping is V01113CPW with no partial VIN stamp that I am able to locate. Also the front stamp pad is smaller than I am used to seeing. I have looked for the partial VIN around the oil filter with no luck and the stamp pad is not large enough for both stamps. Any help would be greatly appreciated.
Thanks,
Clayton

Sep 23, 2013 | 10:55 PM

dmaxx3500

Team Owner

Joined: Jan 2008

Posts: 30,892

Likes: 1,189

From: chicago

pics would help

Sep 23, 2013 | 11:06 PM

Mike Ward

Race Director

Joined: Jul 2001

Posts: 15,892

Likes: 42

3963512 is a 427 or 454 block.

CPW is the code for a '71 ZR2

but no big block engines were built at the Flint (V) plant

01113 is one too many digits.

As already stated, a pic would help.

Sep 24, 2013 | 12:16 AM

ch3098

Thread Starter

Instructor

Joined: Sep 2012

Posts: 119

Likes: 3

From: Casey IL

I have a few pictures, but I'm not sure how to post them to the forum. Can some one please help me? Thanks,

Sep 24, 2013 | 12:35 AM

ch3098

Thread Starter

Instructor

Joined: Sep 2012

Posts: 119

Likes: 3

From: Casey IL

Motor Identification

Please see pictures, I think they are attached. Thanks,

Attached Images

Sep 24, 2013 | 01:46 AM

Mike Ward

Race Director

Joined: Jul 2001

Posts: 15,892

Likes: 42

That's not a factory stamping.

Sep 24, 2013 | 10:30 AM

restoman1

Burning Brakes

Joined: Dec 2010

Posts: 848

Likes: 60

From: CA

That's interesting. I've never seen a "short pad" 512 block before. What's the date code on that puppy?

Ed

Sep 24, 2013 | 05:32 PM

ch3098

Thread Starter

Instructor

Joined: Sep 2012

Posts: 119

Likes: 3

From: Casey IL

I think the Date Code is F 29 70. I found it on the top side of the block by the bell housing.

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Michael S. Palmer

10 Revolutionary 'Corvette Firsts' Most People Don't Know

Joe Kucinski

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Michael S. Palmer

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Joe Kucinski

10 Most Common Corvette Problems of the Last 20 Years!

Joe Kucinski

5 MOST and 5 LEAST Popular Corvette Model Years in History!

Joe Kucinski

2027 Corvette Buyer's Guide: Everything You Need to Know!

Joe Kucinski

10 Things C8 Corvette Owners Hate (But Won't Tell You)

Joe Kucinski

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Brett Foote

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Joe Kucinski

Sep 24, 2013 | 06:27 PM

Hammerhead Fred

Melting Slicks

Joined: Mar 2005

Posts: 2,093

Likes: 297

From: Midlothian VA

Doesn't look like the stamp pad...looks like the water pump boss that protrudes from the stamp pad on some older blocks. What kind of heads are on the block? Perhaps they are covering the actual stamp pad. OR maybe the rest of the pad was machined off.

Last edited by Hammerhead Fred; Sep 24, 2013 at 06:51 PM.

Sep 24, 2013 | 06:52 PM

#10

LS4 PILOT

Melting Slicks

Joined: Jul 2009

Posts: 2,091

Likes: 40

Quote:

Originally Posted by Mike Ward

That's not a factory stamping.

+1

Agree wit ya

Sep 24, 2013 | 08:53 PM

#11

Mike Ward

Race Director

Joined: Jul 2001

Posts: 15,892

Likes: 42

Quote:

Originally Posted by restoman1

That's interesting. I've never seen a "short pad" 512 block before. What's the date code on that puppy?

Ed

I've never seen any pad like that ....................

Sep 24, 2013 | 09:30 PM

#12

restoman1

Burning Brakes

Joined: Dec 2010

Posts: 848

Likes: 60

From: CA

Well, F 29 70 would be June 29th, 1970, but that doesn't help explain the "short" pad. (I don't know of any big blocks that came with the short pad. Mid 1970's and later small blocks, yes, but not big blocks). I also noticed the casting number fonts aren't the same! The 396 is smaller than the 3512. I wonder if this block originally came out of a marine or agricultural application.

Ed

Last edited by restoman1; Sep 24, 2013 at 09:45 PM.

Sep 24, 2013 | 09:35 PM

#13

Mike Ward

Race Director

Joined: Jul 2001

Posts: 15,892

Likes: 42

Doesn't look like a later square SBC pad either, at least to me.

Sep 24, 2013 | 11:08 PM

#14

ch3098

Thread Starter

Instructor

Joined: Sep 2012

Posts: 119

Likes: 3

From: Casey IL

Any ideas how to verify if the block was used in a marine or agricultural application?

Sep 25, 2013 | 10:35 AM

#15

restoman1

Burning Brakes

Joined: Dec 2010

Posts: 848

Likes: 60

From: CA

Quote:

Any ideas how to verify if the block was used in a marine or agricultural application?

Not that I know of. It was just a guess on my part, and only due to the fact that the pad is short and the casting number consists of two different font sizes. NOT typical for a passenger car or truck block.

Are there any other casting letters, numbers, symbols, etc... on the block?

Ed

Last edited by restoman1; Sep 25, 2013 at 10:39 AM.

Sep 25, 2013 | 10:55 AM

#16

1977L48

Pro

Joined: Sep 2012

Posts: 600

Likes: 6

From: Key West Florida

CPW I found in one of my books, CPW 454-CID 4V 425HP M/T, Aluminum heads. BUT it lists it for a 1971 corvette...... something dosent add up.

Sep 25, 2013 | 01:00 PM

#17

restoman1

Burning Brakes

Joined: Dec 2010

Posts: 848

Likes: 60

From: CA

The suffix isn't "factory", so we can eliminate that from the equation, but I'd like to see more pictures of the block. Can you post (or send them to me directly), a few shots of the front, sides, bottom and top?

Ed

Last edited by restoman1; Sep 25, 2013 at 01:36 PM.