Engine ID PLEASE

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Jun 7, 2017 | 08:08 AM

Donny72

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Engine ID PLEASE

I just acquired a 1973 Corvette with a NON numbers matching engine and cannot figure out what is truly is. The codes are as follows:
15J204032 F 819 CTU. I am pretty sure it is NOT a Corvette engine with a "J", but I would like to know what it is. Any help would be greatly appreciated.
Thanks!

Jun 7, 2017 | 08:52 AM

Easy Mike

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From: Southbound

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75-76 400 4V passenger car, Chevelle, and Monte Carlo.

Jun 7, 2017 | 08:59 AM

Donny72

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Mike, Thanks so much!

Jun 7, 2017 | 09:41 AM

gbvette62

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From: Shamong, NJ

I'm going to disagree with Mike here a little bit, not that it makes any difference with the engine itself.

I do believe it's a 400, but I think it is out of a full size Chevrolet, not a Chevelle or Monte Carlo. My info shows that CTU could be a 400 4bbl in either a GM A-body (Chevelle, etc) or B-body (full size).

The "J" in the VIN indicates the car was assembled at GM's Janesville WI assembly plant, and I don't think Janesville ever built A-body's. Up to the early 80's, Janesville built full size Chevrolets. Later they built GM sub-compacts (Cavalier's, etc), and then GM pick ups and full size SUV's.

Jun 7, 2017 | 12:10 PM

PAmotorman

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in 1970 CTU was the 370 HP 350 corvette engine so maybe the seller might have been trying to fool someone into buying the car. typo corrected

Last edited by PAmotorman; Jun 7, 2017 at 03:17 PM.

Jun 7, 2017 | 01:49 PM

sullyman56

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From: Scottsdale Arizona

My book shows CTU and CTK for a 1970 LT1 350/ 370 hp.

Jun 7, 2017 | 02:29 PM

Donny72

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I could only wish it was a 350/370! The seller had NO clue to what was in it. No games on his side. I knew with a "J" in it, it was not an LT1. Darn it!
Thanks gang for all the help.