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1969 Engine Code question

Mtnbiker

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Apr 10, 2007
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71
Location
Colorado
Corvette
1990 Black/Black LT5 Coupe
I checked both the technical specs page and did a keyword search, but didn't find an answer to this question, so here goes...

I'm interested in a '69 427/400, but it's out of state so I have to (for now) rely on the seller reading #'s of the block to me. He read the following numbers to me:

19S702869 (last 6 match the VIN);
3935439 (seems to be correct casting # for a 427); and
TO517IG.

What the heck is the last number? He sent me a digital photo, the number is hard to read and could be TO51710.

Any help would be greatly appreciated!

Doug
 

Mtnbiker

Well-known member
Joined
Apr 10, 2007
Messages
71
Location
Colorado
Corvette
1990 Black/Black LT5 Coupe

Sure, he actually sent me 3 shots... I'm going to guess that he doesn't make his living through photography.

000_9040.jpg


000_9037.jpg


000_9031.jpg
 

Mtnbiker

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Joined
Apr 10, 2007
Messages
71
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Colorado
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1990 Black/Black LT5 Coupe
KOPBET,

Thanks a lot... your link answered my question.

It's T0517IO

T - Tonawanda
0517 May 17 build
IO - 427/400 with the Turbo 400 tranny.

So far, so good. Thanks again!

Doug
 

Vettehead Mikey

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3,486
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Not that far from Ottawa
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1973 Coupe
If you're considering paying extra bucks for this car because it may have still the original engine, I would be very cautious.

The engine stamp pad appears to be in poor condition and the 'funny' O in the engine machine code will always be cause for concern.

Does the seller have any documentation to indicate that this is the original engine? I'm not saying that it's not the original -unusual pads are seen all the time- just that I believe that there's two warning flags already.

:beer
 

Mtnbiker

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Joined
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Messages
71
Location
Colorado
Corvette
1990 Black/Black LT5 Coupe
Ruh-roh!:eek:hnoes

Yeah, no kidding... a '68 motor in a '69. Who woulda thunk it. Although I thought I read somewhere that because '69 was such a long running model year, the earlier models had '68 parts. I have no idea how I'd confirm such a thing, though, and I don't know if it applied to engines.

It's a dealer consignment sale, a 69 'vert w/ 427/400, AT for $27K. It'll need a paint job and some serious cleaning up, but otherwise it's mechanically sound.
 

Vettehead Mikey

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Messages
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Location
Not that far from Ottawa
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1973 Coupe
Although I thought I read somewhere that because '69 was such a long running model year, the earlier models had '68 parts. I have no idea how I'd confirm such a thing, though, and I don't know if it applied to engines.

I've never seen a discontinued engine build code used in a following year car. The assembly date on the engine is May 17th. It is unknown at this point whether that's 1967 or 1968-need to determine by the block casting date. 1969 Car serial number 2869 was built in late September 1968, a delay of at least fourth months. That's kinda long. If the casting date is 1967, more Ruh-Roh.

This just throws more suspicion on this car. If you buy it as a NOM car, then it won't matter. Price seems high for a car that needs work and with an auto trans though.
 

6880 Mike

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1968 convertible; 1980 L-82
May 1969 was during the strike. Since no production was going on, there should be no Corvette 427s assembled in May 1969.

That probably makes the engine assembly date May 1968 and jives with the IO suffix ('68 only).

Casting number of the block is correct for 68 or 69, but not 67.

You say the VIN deriviative matches the '69.

What's the time/build date for the car in question?

:)
 

Mtnbiker

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Joined
Apr 10, 2007
Messages
71
Location
Colorado
Corvette
1990 Black/Black LT5 Coupe
May 1969 was during the strike. Since no production was going on, there should be no Corvette 427s assembled in May 1969.

That probably makes the engine assembly date May 1968 and jives with the IO suffix ('68 only).

Casting number of the block is correct for 68 or 69, but not 67.

You say the VIN deriviative matches the '69.

What's the time/build date for the car in question?

:)

It was car # 2889, so it was in the first run (September of '68).

Doug
 

6880 Mike

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1968 convertible; 1980 L-82
It was car # 2889, so it was in the first run (September of '68).

Doug

I think you may have a left over '68 427 in this '69. Can't explain why it laid around St. Louis from May 68 until September '68, but the VIN derivative jives. Early '69s have been documentated with left over '68 parts.

:)
 

Mtnbiker

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Joined
Apr 10, 2007
Messages
71
Location
Colorado
Corvette
1990 Black/Black LT5 Coupe
I think you may have a left over '68 427 in this '69. Can't explain why it laid around St. Louis from May 68 until September '68, but the VIN derivative jives. Early '69s have been documentated with left over '68 parts.

:)

I decided not to go with this vehicle... trust me, I REALLY wanted a tripower convertible for 27K, but I'm not experienced enough or wealthy enough to rescue this one. I'll be regretting this for a while, but I'm sure my family thanks me. Needing food to eat and all.
 
Joined
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Washington, Michigan
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'67 Marina Blue Convertible
I think you may have a left over '68 427 in this '69. Can't explain why it laid around St. Louis from May 68 until September '68, but the VIN derivative jives. Early '69s have been documentated with left over '68 parts.

:)

No such thing as a May '68-built engine being "left over" and installed in a September-built '69; among other things, it wasn't emission-certified for use in '69, and using a '68-suffixed engine in a '69 was illegal.

:beer
 

6880 Mike

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Joined
Jun 30, 2006
Messages
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Location
The Bluegrass State
Corvette
1968 convertible; 1980 L-82
No such thing as a May '68-built engine being "left over" and installed in a September-built '69; among other things, it wasn't emission-certified for use in '69, and using a '68-suffixed engine in a '69 was illegal.

:beer

Drat. I was hoping it wasn't a restamp.
:cry
 

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