70 LT1 authenticity
Thread Starter
Pro
Joined: Mar 2011
Posts: 614
Likes: 7
From: Montreal Quebec
70 LT1 authenticity
1970 LT1 for sale on Craigslist, Alabany. I will try to send link later. He only has fragments of the tanks sticker. All numbers matching how can you check for authenticity besides tank sticker. Car has been restored grey exterior black interior
Racer
Joined: May 2008
Posts: 385
Likes: 3
From: Hamilton Mass
Bruce I'll take a stab at some points of interest that may help substantiate the 1970 LT-1:
1. Stamp Pad must include either CTU or CTK. CTU coded engines being the early release/first design and thus IMO more desirable because they were somewhat "bare bones" with limited options. CTU coded engines should NOT have a date beyond early May 1970 when the 2nd design CTK code was released offering power steering. Additionally and importantly CTU coded cars came factory equipped with 6 quart oil pans.
2. All original 1970 LT1's came with transistor ignitions and incorporated a TI amplifier which is located and visible on the driver's side in front of the radiator support.
3. Heads should be GM 3973414. I believe some of these numbers are visible looking through the oil filler cap?
4. Alternator should be GM 1100884.
5. I believe there should NOT be an expansion tank?
Note: there are many other physical features that help identify; but, along with the above, do not guarantee authenticity. The ultimate source for the history of this car is Terry McManmon who is available on the NCRS forum.
Hope this helps,
Ralph
1. Stamp Pad must include either CTU or CTK. CTU coded engines being the early release/first design and thus IMO more desirable because they were somewhat "bare bones" with limited options. CTU coded engines should NOT have a date beyond early May 1970 when the 2nd design CTK code was released offering power steering. Additionally and importantly CTU coded cars came factory equipped with 6 quart oil pans.
2. All original 1970 LT1's came with transistor ignitions and incorporated a TI amplifier which is located and visible on the driver's side in front of the radiator support.
3. Heads should be GM 3973414. I believe some of these numbers are visible looking through the oil filler cap?
4. Alternator should be GM 1100884.
5. I believe there should NOT be an expansion tank?
Note: there are many other physical features that help identify; but, along with the above, do not guarantee authenticity. The ultimate source for the history of this car is Terry McManmon who is available on the NCRS forum.
Hope this helps,
Ralph
Last edited by 1966STER; Dec 26, 2013 at 06:28 PM.
Thread Starter
Pro
Joined: Mar 2011
Posts: 614
Likes: 7
From: Montreal Quebec
1970 LT1 Authinticity
I saw in craigslist ,Albany this car I spoke to the seller , I will send link later who says it is all matching restored , but only has fragments of tank sticker. it has the ti ignition and according to him everything matches.Grey with blk interior asking $30,000.00
Is there any other way to check
Is there any other way to check
Safety Car
Joined: Nov 2003
Posts: 4,274
Likes: 6
From: Corvetteville USA
I saw in craigslist ,Albany this car I spoke to the seller , I will send link later who says it is all matching restored , but only has fragments of tank sticker. it has the ti ignition and according to him everything matches.Grey with blk interior asking $30,000.00
Is there any other way to check
Is there any other way to check
single return fuel line
A/C delete
Get a picture of the stamp pad, trim tag, and VIN pillar. Then go from there.....
Don't do a THING until you confirm and look at these items, then you can move on to the next step (an inspection) if it passes the first sniff test.
Racer
Joined: May 2008
Posts: 385
Likes: 3
From: Hamilton Mass
Bruce here a few more major parts I believe to be original to the 1970 LT1:
Bell-housing 3899621
Fuel Pump AC 40709
Block Casting 3970010
Intake Manifold 3972110
Holley Carburetor 3972121 4555
Distributor Tag 1111491
Water Pump 3782608
Starter Motor 1108338
Additionally they should all have an appropriate date code except the carburetor, bell-housing, fuel pump and intake.
Bell-housing 3899621
Fuel Pump AC 40709
Block Casting 3970010
Intake Manifold 3972110
Holley Carburetor 3972121 4555
Distributor Tag 1111491
Water Pump 3782608
Starter Motor 1108338
Additionally they should all have an appropriate date code except the carburetor, bell-housing, fuel pump and intake.
Instructor
Joined: Apr 2013
Posts: 147
Likes: 0
From: Fairfield County CT
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Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
Bruce- authenticating a C3 is pretty much the same as a C2. If you're not aware that the LT-1s are the most frequently faked SBC C3 Corvettes, you're a prime target to get 'taken'.
If it is a fake, somebody's put decent effort into doing it right, although the oil pan looks like a short and not a long version. I'd want to know why.
The term 'all numbers matching' is meaningless. A correctly restamped engine out of a taxi is 'all numbers matching'. Beware.
Get a pic of the stamp pad and post it here.
If it is a fake, somebody's put decent effort into doing it right, although the oil pan looks like a short and not a long version. I'd want to know why.
The term 'all numbers matching' is meaningless. A correctly restamped engine out of a taxi is 'all numbers matching'. Beware.
Get a pic of the stamp pad and post it here.
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
If the pad & all the #'S look good it's a good buy at 30,000.00. It will sell soon especially now that it is posted hear. I have learned when it comes to a good deal on a Corvette keep it to yourself & act fast. I had lost a few because I told someone about a car & someone else they told have tried or bought it out from under me. Tell NO one if you want the Corvette.
Melting Slicks
Joined: Sep 2002
Posts: 3,465
Likes: 149
From: Earth
The money being so low is the first thing that makes me think look deeper. Any real 70 LT-1, body off, good paint, factory trim tag with a good color, "matching numbers"
, is worth that all day long, if the car checks out in other areas. Again have someone that knows LT-1's look at the car with you.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Pretty much the same as it was in October.
http://forums.corvetteforum.com/c3-g...-1970-lt1.html
Good luck.
http://forums.corvetteforum.com/c3-g...-1970-lt1.html
Good luck.
Safety Car
Joined: Nov 2003
Posts: 4,274
Likes: 6
From: Corvetteville USA
Pretty much the same as it was in October.
http://forums.corvetteforum.com/c3-g...-1970-lt1.html
Good luck.
http://forums.corvetteforum.com/c3-g...-1970-lt1.html
Good luck.
"Pretty much the same as it was in October."
Anyway, keep looking OP and very smart for being cautious on a purchase like this. Hopefully, you will get some more pics in short order. As I said, it looks like a really nice car so far.
Le Mans Master
Joined: Mar 2001
Posts: 5,738
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From: Lincoln, CA
Thread Starter
Pro
Joined: Mar 2011
Posts: 614
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From: Montreal Quebec
<a href="http://s939.photobucket.com/user/bblack7819/media/1970%20LT1%20Syracuse/P9191183_zps1a984a92.jpg.html" target="_blank"><img src="http://i939.photobucket.com/albums/ad238/bblack7819/1970%20LT1%20Syracuse/P9191183_zps1a984a92.jpg" border="0" alt=" photo P9191183_zps1a984a92.jpg"/></a>