LT-1 Owners Thread
Melting Slicks
Joined: Mar 2003
Posts: 2,622
Likes: 555
From: Manchester
2024 C3 of the Year Finalist- Unmodified
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2021 C2 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
2019 C3 of Year Finalist (stock)
2017 C3 of Year Finalist
St. Jude Donor '13
Thread Starter
Drifting
Joined: Dec 2002
Posts: 1,591
Likes: 111
From: North Brunswick NJ
Melting Slicks
Joined: Mar 2003
Posts: 2,622
Likes: 555
From: Manchester
2024 C3 of the Year Finalist- Unmodified
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2021 C2 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
2019 C3 of Year Finalist (stock)
2017 C3 of Year Finalist
St. Jude Donor '13
Parts Sherpa
Joined: Feb 2017
Posts: 520
Likes: 98
From: ICE boneyard, Pa
Instructor
Joined: May 2018
Posts: 234
Likes: 57
LT-1 Options
I hope is OK to ask this question here as I want to hear from the LT-1 experts...Are all of the following options available on a ‘71 or ‘72 LT-1?
Power steering
Power brakes
Power windows
Custom shoulder belts
Tilt telescopic steering column
Alarm
M21 transmission
Thanks!!
Keith
Power steering
Power brakes
Power windows
Custom shoulder belts
Tilt telescopic steering column
Alarm
M21 transmission
Thanks!!
Keith
Thread Starter
Drifting
Joined: Dec 2002
Posts: 1,591
Likes: 111
From: North Brunswick NJ
I hope is OK to ask this question here as I want to hear from the LT-1 experts...Are all of the following options available on a ‘71 or ‘72 LT-1?
Power steering
Power brakes
Power windows
Custom shoulder belts
Tilt telescopic steering column
Alarm
M21 transmission
Thanks!!
Keith
Power steering
Power brakes
Power windows
Custom shoulder belts
Tilt telescopic steering column
Alarm
M21 transmission
Thanks!!
Keith
Last edited by jaxlt1; Aug 21, 2018 at 07:58 AM.
Cruising
Joined: Dec 2006
Posts: 11
Likes: 0
LT-1 Radiator Question
I am restoring my 1972 M21 4 speed, LT-1, car (with no air conditioning). It was originally purchased at Beach City Chevrolet in Long Beach, California. It has 63,000 original miles and is Classic White with red interior. The car is very original, and every number I have checked on the car is original (engine block, heads, intake, transmission, rear end, wheels, window glass, etc.) I do however, have a couple of questions regarding the radiator. The car has an aluminum Harrison expansion tank 315541 with a 71 J date code, so the correct date would suggest it is original to the car. The radiator is copper brass and is likely a replacement, since I could not find any numbers on it. The core measures 26" wide by approx. 18" tall, and it has original style side tanks, and one side has a radiator cap on it. Looking at Paragon's catalogue, the core support they show as correct for a 1970-1972 LT-1 w/o M-22 transmission looks identical to mine. My radiator also looks exactly like the Paragon 8679 radiator which they show as correct for a 1970-1972 LT-1, except that my radiator is copper brass and the 8679 is aluminum.
Does anyone know if my car would have come with an Aluminum or Copper Brass radiator, and whether or not it is appropriate to have a separate Expansion Tank, and a Radiator with its own side expansion tank? If so, can anyone share with me the hose configuration, and what type of radiator cap should be on the radiator and the expansion tank. My expansion tank has one 3/4" hose connection on bottom, one 3/8" connection on upper side of tank, and one 3/8" connection on the filler neck. The tank has a chrome cap that has three fins running across it (not sure if that is original). Since my car is very original, I am trying to ensure the cooling system is original as well. Thanks for any advice!!!! Ken
Does anyone know if my car would have come with an Aluminum or Copper Brass radiator, and whether or not it is appropriate to have a separate Expansion Tank, and a Radiator with its own side expansion tank? If so, can anyone share with me the hose configuration, and what type of radiator cap should be on the radiator and the expansion tank. My expansion tank has one 3/4" hose connection on bottom, one 3/8" connection on upper side of tank, and one 3/8" connection on the filler neck. The tank has a chrome cap that has three fins running across it (not sure if that is original). Since my car is very original, I am trying to ensure the cooling system is original as well. Thanks for any advice!!!! Ken
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Thread Starter
Drifting
Joined: Dec 2002
Posts: 1,591
Likes: 111
From: North Brunswick NJ
Parts Sherpa
Joined: Feb 2017
Posts: 520
Likes: 98
From: ICE boneyard, Pa
I am restoring my 1972 M21 4 speed, LT-1, car (with no air conditioning). It was originally purchased at Beach City Chevrolet in Long Beach, California. It has 63,000 original miles and is Classic White with red interior. The car is very original, and every number I have checked on the car is original (engine block, heads, intake, transmission, rear end, wheels, window glass, etc.) I do however, have a couple of questions regarding the radiator. The car has an aluminum Harrison expansion tank 315541 with a 71 J date code, so the correct date would suggest it is original to the car. The radiator is copper brass and is likely a replacement, since I could not find any numbers on it. The core measures 26" wide by approx. 18" tall, and it has original style side tanks, and one side has a radiator cap on it. Looking at Paragon's catalogue, the core support they show as correct for a 1970-1972 LT-1 w/o M-22 transmission looks identical to mine. My radiator also looks exactly like the Paragon 8679 radiator which they show as correct for a 1970-1972 LT-1, except that my radiator is copper brass and the 8679 is aluminum.
Does anyone know if my car would have come with an Aluminum or Copper Brass radiator, and whether or not it is appropriate to have a separate Expansion Tank, and a Radiator with its own side expansion tank? If so, can anyone share with me the hose configuration, and what type of radiator cap should be on the radiator and the expansion tank. My expansion tank has one 3/4" hose connection on bottom, one 3/8" connection on upper side of tank, and one 3/8" connection on the filler neck. The tank has a chrome cap that has three fins running across it (not sure if that is original). Since my car is very original, I am trying to ensure the cooling system is original as well. Thanks for any advice!!!! Ken
Does anyone know if my car would have come with an Aluminum or Copper Brass radiator, and whether or not it is appropriate to have a separate Expansion Tank, and a Radiator with its own side expansion tank? If so, can anyone share with me the hose configuration, and what type of radiator cap should be on the radiator and the expansion tank. My expansion tank has one 3/4" hose connection on bottom, one 3/8" connection on upper side of tank, and one 3/8" connection on the filler neck. The tank has a chrome cap that has three fins running across it (not sure if that is original). Since my car is very original, I am trying to ensure the cooling system is original as well. Thanks for any advice!!!! Ken
i dont believe the expansion tank came on any LT-1's. That does not mean someone didnt think it was a good idea to add one at some point over the past 45 years. Here is what mine looked like. The date can be seen stamped just above the MK9 tag. The only LT-1's with an aluminum radiator were the ZR-1's to my understanding
Instructor
Joined: Feb 2005
Posts: 133
Likes: 7
From: Arcadia Wisconsin
LT-1 recent purchase
just recently purchased 1970 LT-1 convertible, Laguna Grey, black vinyl interior. Car has been in storage for 43 years. Last license plate was 1975.
It seems to be a no hit car. But the first 5 years must have been hard ones for the original engine is gone. And it has been a mouse condo. Will be looking for a 1970 LT-1 engine, which should be interesting, or dated coded parts to assemble one.
The beginning of a long journey, but enjoyable one I hope.
It seems to be a no hit car. But the first 5 years must have been hard ones for the original engine is gone. And it has been a mouse condo. Will be looking for a 1970 LT-1 engine, which should be interesting, or dated coded parts to assemble one.
The beginning of a long journey, but enjoyable one I hope.
Last edited by council bay; Oct 1, 2018 at 09:06 PM. Reason: Adding pictures
Drifting
Joined: Apr 2017
Posts: 1,377
Likes: 282
From: Bedford New York
just recently purchased 1970 LT-1 convertible, Laguna Grey, black vinyl interior. Car has been in storage for 43 years. Last license plate was 1975.
It seems to be a no hit car. But the first 5 years must have been hard ones for the original engine is gone. And it has been a mouse condo. Will be looking for a 1970 LT-1 engine, which should be interesting, or dated coded parts to assemble one.
The beginning of a long journey, but enjoyable one I hope.
It seems to be a no hit car. But the first 5 years must have been hard ones for the original engine is gone. And it has been a mouse condo. Will be looking for a 1970 LT-1 engine, which should be interesting, or dated coded parts to assemble one.
The beginning of a long journey, but enjoyable one I hope.
Racer
Joined: Apr 2016
Posts: 357
Likes: 339
2018 C3 of Year Winner
Does this seen accurate for values? Hagerty seems on top of things. Thoughts please
Current Values
- #1 Concours$63,900
Condition #1 vehicles are the best in the world. The visual image is of the best vehicle, in the right colors, driving onto the lawn at the finest concours. Perfectly clean, the vehicle has been groomed down to the tire treads. Painted and chromed surfaces are mirror-like. Dust and dirt are banned, and materials used are correct and superbly fitted. The one word description for #1 vehicles is "concours." - #2 Excellent$50,200
- #3 Good$35,200
- #4 Fair$21,400