Engine suffix code.. LT1?
Thread Starter
Cruising
Joined: Aug 2014
Posts: 11
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Engine suffix code.. LT1?
I'm interested in a 1976 corvette. The owner claims it has a 1969 LT1 (already a red flag) so I decided to try and figure out WTH it is. I took a pic and have been trying to decode it but I cant find anything for that particular engine suffix. If someone could help me figure out what kind of engine I am looking at I would appreciate it! Here is the pic http://imgur.com/f41wlWr
Team Owner
Joined: Sep 2006
Posts: 31,301
Likes: 4,389
From: Westminster Maryland
Hi T,
I guess once the original suffix has been changed there's really no SURE way of telling what this engine was when it was built.
All you can do is make an assessment of the parts that are presently on the engine and see what they seem to add up to.
Regards,
Alan
The braided heater hose cover is worth at least 15 horsepower, and the unpainted (chrome plated?) timing chain cover 10 more.
I guess once the original suffix has been changed there's really no SURE way of telling what this engine was when it was built.
All you can do is make an assessment of the parts that are presently on the engine and see what they seem to add up to.
Regards,
Alan
The braided heater hose cover is worth at least 15 horsepower, and the unpainted (chrome plated?) timing chain cover 10 more.
Last edited by Alan 71; Sep 7, 2014 at 08:30 AM.
Le Mans Master
Joined: Jan 2000
Posts: 8,721
Likes: 108
From: Canada
Hi T,
I guess once the original suffix has been changed there's really no SURE way of telling what this engine was when it was built.
All you can do is make an assessment of the parts that are presently on the engine and see what they seem to add up to.
Regards,
Alan
The braided heater hose cover is worth at least 15 horsepower, and the unpainted (chrome plated?) timing chain cover 10 more.
I guess once the original suffix has been changed there's really no SURE way of telling what this engine was when it was built.
All you can do is make an assessment of the parts that are presently on the engine and see what they seem to add up to.
Regards,
Alan
The braided heater hose cover is worth at least 15 horsepower, and the unpainted (chrome plated?) timing chain cover 10 more.
Alan I now have to clean the coffee off my iPad. When i was looking for a C3 I asked one owner what the engine stamped numbers were. His reply was what do you want them to be.
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Michael S. Palmer
Team Owner
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From: Southbound
Cruise-In II Veteran
Safety Car
Joined: Sep 2007
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From: Indy Indiana
So you already know that it is a non original engine to the car. you know now that it is not stamped as a LT1. It could be loaded with LT1 parts and perform as an LT1 would ( or even better).
if the block is not a casting date coded 69 then does that matter? I suppose it would from a standpoint that the seller is either ignorant or telling you a lie since there is no such thing as a factory LT1 in 69.
getting casting number and date code for the engine block ( check the heads too) will tell you when the engine was made. but it will not tell you what it was rebuilt, or built with.. if it even was rebuilt.
if the block is not a casting date coded 69 then does that matter? I suppose it would from a standpoint that the seller is either ignorant or telling you a lie since there is no such thing as a factory LT1 in 69.
getting casting number and date code for the engine block ( check the heads too) will tell you when the engine was made. but it will not tell you what it was rebuilt, or built with.. if it even was rebuilt.
Thread Starter
Cruising
Joined: Aug 2014
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Joe you are correct that it doesn't really matter. I'm just a very curious person and like to know what is going on, and to be able to say that I have X under the hood. But it does indeed perform well which I guess is all that matters at this point.
Instructor
Joined: Aug 2012
Posts: 160
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From: Bellevue Nebraska
NE Events Coordinator
http://www.nastyz28.com/gm-chevy-cod...s-suffix-8.php
A TU would be a 1978 305, but who is to say that is what it is
A TU would be a 1978 305, but who is to say that is what it is
Safety Car
Joined: Apr 2007
Posts: 3,849
Likes: 367
From: PHOENIX AZ. WHAT A MAN WON"T SPEND TO GIVE HIS ASS A RIDE
Hi T,
I guess once the original suffix has been changed there's really no SURE way of telling what this engine was when it was built.
All you can do is make an assessment of the parts that are presently on the engine and see what they seem to add up to.
Regards,
Alan
The braided heater hose cover is worth at least 15 horsepower, and the unpainted (chrome plated?) timing chain cover 10 more.
I guess once the original suffix has been changed there's really no SURE way of telling what this engine was when it was built.
All you can do is make an assessment of the parts that are presently on the engine and see what they seem to add up to.
Regards,
Alan
The braided heater hose cover is worth at least 15 horsepower, and the unpainted (chrome plated?) timing chain cover 10 more.
Melting Slicks
Joined: Jul 2009
Posts: 2,091
Likes: 40
There is a raised date on the other side back of block . ..the casting date
First determine when the block was cast ......
Is there a partial vin .....small digits to the left of the larger letters you show.
CF Community Team
Joined: Mar 2007
Posts: 9,339
Likes: 360
From: Delaware
St. Jude Donor '25
Just to add to that a bit. If my memory serves me the 010 block was not used in 69's until later in the production year. "A" being January means to me that, as Alan said, it's a 1979 dated 010 block.
