Do casting numbers describe engine type
Thread Starter
Supreme Member
Joined: Jul 2006
Posts: 1,672
Likes: 4
From: Killam, AB
Car: 1989 IrocZ Convertible
Engine: 305 TPI
Transmission: T5 - 5 Speed Standard
Axle/Gears: 3.08
Do casting numbers describe engine type
What I mean is, let's say you have a 305 block in a '83 Camaro. Can you tell by the casting number if it's an L69 vs LU5?
They both use the same desplacement block with the same compression ratio. The difference being one has a carburated intake and the other CFI.
Just curious.
They both use the same desplacement block with the same compression ratio. The difference being one has a carburated intake and the other CFI.
Just curious.
Thread Starter
Supreme Member
Joined: Jul 2006
Posts: 1,672
Likes: 4
From: Killam, AB
Car: 1989 IrocZ Convertible
Engine: 305 TPI
Transmission: T5 - 5 Speed Standard
Axle/Gears: 3.08
Re: Do casting numbers describe engine type
Thanks. I didn't think so, but just wanted to be 100% sure.
Supreme Member
Joined: Jul 2005
Posts: 1,675
Likes: 3
From: Arab, Alabama
Car: 1988 Trans Am GTA
Engine: 350 4BBL
Transmission: 700R4
Axle/Gears: 3.27
Re: Do casting numbers describe engine type
The serial number stamped in the block might. I don't know if they were putting the last digits of the VIN on the block back then or not, but if they match the VIN on the car, the rest of the VIN on the car will tell you.
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