this isn't actually a true LT-1 is it?
08-05-2015, 07:28 AM
#5
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...this isn't actually a true LT-1 is it?...
08-05-2015, 10:30 AM
#7
Le Mans Master
Looks like a nice car. I love the color
08-05-2015, 10:54 AM
#8
Melting Slicks
Good LT-1 Checklist for you
Good LT-1 Check list for you, as Alan has said elsewhere, check NCRS book too. There is a guy named Drew Papsun (I think I remember correctly) that has list of 72 Lt-1's with a/c who might could help or would be interested in this one.
Hope this might help. This one has the other important documents and story/history which would support authenticity for me.
Here is a great list I saved from a posting here:
There are a few things that only a LT-1 would have , some are pretty easy to change out and some are not very easy at all.in no piticular order.
1st. No 1970 or 1971 LT-1 had A/C
2nd. Emmission sticker on fire wall behind master cylinder should have letters AX on upper left corner for a 71.
3rd. All LT-1's are 4 speeds. (M20 was std , M21/M22 were optional)
4th. Tach has 6,500 RPM red line on 1970 & 1971 and on 72's w/o AC . 5600 for 72 with a/c
5th. All 71 LT-1's came with A.I.R. system. If removed should still have manifolds with holes for the tubes, Car may have headers and if so ask to see old manifolds.
6th. LT-1's had copper radiator W/O a overflow canisiter on the passanger side fenderwell. There should also be no holes whers one had been mounted.
7th. All 70 / 71 LT-1's had Tranisitor Ign. system. That may have been removed. But if it is removed look for the 3 holes on the front face of the driver side inner fender well where the Amplifer box was mounter.
Take a flashlight and look in front of the front wheel or open hood and look at it from the front side. 2 holes on bottom and 1 on top. No TI on the 72 LT-1
8th. Should have a Winters snowflake intake manifold with casting # 3959594
for 1971 and 1972, per NCRS, 1970 should be #3972110. Both manifolds are aluminum (my addition).
9th. LT-1's had a Holley carb. so there is only 1 fuel line , no return line like a quadra-jet carb. Look along frame rail on passanger side for the single line. Also the fuel tank is different. There should be no nipple on the passanger side, side wall for a return line.
If you lay on your back under the rear wheel you can reach your hand up and feel for an indention on the passanger side. If there is a nipple that is capped off , then beware.
Also the single fuel line on a LT-1 was not the same line that was used to feed fuel on the 2 line set up. So if someone removed the return line the look of the 3/8 line is still different. Not a big difference but if you can look at a car with a 2 line set up then you can see what you do not want to find.
10th. LT-1's had solid lifters , but if the car does not then that is not to big a red flag. Many people do not like them and may have replaced with HYD. lifters during a rebuild.
11th. The hardest to fake and most expensive would be the 4 bolt main block. No # on the outside of the block can verify this.
Only way to verify is to remove the pan or have a lighted optical viewer and remove the drain plug.
12th. LT-1's use 2.5" exhaust pipes like the big block cars. But the manifolds were still 2" set up. So the pipes flair from 2 to 2.5" about 6 inches from the manifold. The exhaust hangar at the trans is also different. Look on line at the Corvette Central site and you can see both 2" and 2.5" hangars.
13th. As I recall the highest rear end gear was 3:36 if trans was a M20
And id Trans was a M21 or M22 the 3:55 was highest gear
M20 3:36 Economy
3:55 Standard
3:70 Performance
M21 / M22
3:55 Economy
3:70 Standard
4:11 Performance
14th. The 71 /71 LT-1 Aluminum valve covers should have a rubber oil cap not a twist in. These covers are very hard to find. All the catalouges sell the twist in cap style.
15th. LT-1's have the same heavy duty half shaft retainers as big block cars. look at the rear end side yokes, there should be caps with bolts. Base cars used U bolts with nuts.
16th. The rocker arms have a letter O stamped in them.
17th. The balancer on the crankshaft is an 8" unit not a 6"
That is all I know of. and you could not fake all of this and sell a car for a mid 20's price
Hope this might help. This one has the other important documents and story/history which would support authenticity for me.
Here is a great list I saved from a posting here:
There are a few things that only a LT-1 would have , some are pretty easy to change out and some are not very easy at all.in no piticular order.
1st. No 1970 or 1971 LT-1 had A/C
2nd. Emmission sticker on fire wall behind master cylinder should have letters AX on upper left corner for a 71.
3rd. All LT-1's are 4 speeds. (M20 was std , M21/M22 were optional)
4th. Tach has 6,500 RPM red line on 1970 & 1971 and on 72's w/o AC . 5600 for 72 with a/c
5th. All 71 LT-1's came with A.I.R. system. If removed should still have manifolds with holes for the tubes, Car may have headers and if so ask to see old manifolds.
6th. LT-1's had copper radiator W/O a overflow canisiter on the passanger side fenderwell. There should also be no holes whers one had been mounted.
7th. All 70 / 71 LT-1's had Tranisitor Ign. system. That may have been removed. But if it is removed look for the 3 holes on the front face of the driver side inner fender well where the Amplifer box was mounter.
Take a flashlight and look in front of the front wheel or open hood and look at it from the front side. 2 holes on bottom and 1 on top. No TI on the 72 LT-1
8th. Should have a Winters snowflake intake manifold with casting # 3959594
for 1971 and 1972, per NCRS, 1970 should be #3972110. Both manifolds are aluminum (my addition).
9th. LT-1's had a Holley carb. so there is only 1 fuel line , no return line like a quadra-jet carb. Look along frame rail on passanger side for the single line. Also the fuel tank is different. There should be no nipple on the passanger side, side wall for a return line.
If you lay on your back under the rear wheel you can reach your hand up and feel for an indention on the passanger side. If there is a nipple that is capped off , then beware.
Also the single fuel line on a LT-1 was not the same line that was used to feed fuel on the 2 line set up. So if someone removed the return line the look of the 3/8 line is still different. Not a big difference but if you can look at a car with a 2 line set up then you can see what you do not want to find.
10th. LT-1's had solid lifters , but if the car does not then that is not to big a red flag. Many people do not like them and may have replaced with HYD. lifters during a rebuild.
11th. The hardest to fake and most expensive would be the 4 bolt main block. No # on the outside of the block can verify this.
Only way to verify is to remove the pan or have a lighted optical viewer and remove the drain plug.
12th. LT-1's use 2.5" exhaust pipes like the big block cars. But the manifolds were still 2" set up. So the pipes flair from 2 to 2.5" about 6 inches from the manifold. The exhaust hangar at the trans is also different. Look on line at the Corvette Central site and you can see both 2" and 2.5" hangars.
13th. As I recall the highest rear end gear was 3:36 if trans was a M20
And id Trans was a M21 or M22 the 3:55 was highest gear
M20 3:36 Economy
3:55 Standard
3:70 Performance
M21 / M22
3:55 Economy
3:70 Standard
4:11 Performance
14th. The 71 /71 LT-1 Aluminum valve covers should have a rubber oil cap not a twist in. These covers are very hard to find. All the catalouges sell the twist in cap style.
15th. LT-1's have the same heavy duty half shaft retainers as big block cars. look at the rear end side yokes, there should be caps with bolts. Base cars used U bolts with nuts.
16th. The rocker arms have a letter O stamped in them.
17th. The balancer on the crankshaft is an 8" unit not a 6"
That is all I know of. and you could not fake all of this and sell a car for a mid 20's price
Last edited by 20mercury; 08-05-2015 at 11:02 AM.
08-05-2015, 01:33 PM
#9
Drifting
Owner say there are no rust issues....Up till 4 years ago the car was stored for 23 years straight and was from Alabama before that. Anyone got 39 K I can borrow....?
Brian
Brian
08-05-2015, 10:20 PM
#10
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Member Since: Jul 2004
Location: Redondo Beach, California
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Good LT-1 Check list for you, as Alan has said elsewhere, check NCRS book too. There is a guy named Drew Papsun (I think I remember correctly) that has list of 72 Lt-1's with a/c who might could help or would be interested in this one.
Hope this might help. This one has the other important documents and story/history which would support authenticity for me.
Here is a great list I saved from a posting here:
There are a few things that only a LT-1 would have , some are pretty easy to change out and some are not very easy at all.in no piticular order.
1st. No 1970 or 1971 LT-1 had A/C
2nd. Emmission sticker on fire wall behind master cylinder should have letters AX on upper left corner for a 71.
3rd. All LT-1's are 4 speeds. (M20 was std , M21/M22 were optional)
4th. Tach has 6,500 RPM red line on 1970 & 1971 and on 72's w/o AC . 5600 for 72 with a/c
5th. All 71 LT-1's came with A.I.R. system. If removed should still have manifolds with holes for the tubes, Car may have headers and if so ask to see old manifolds.
6th. LT-1's had copper radiator W/O a overflow canisiter on the passanger side fenderwell. There should also be no holes whers one had been mounted.
7th. All 70 / 71 LT-1's had Tranisitor Ign. system. That may have been removed. But if it is removed look for the 3 holes on the front face of the driver side inner fender well where the Amplifer box was mounter.
Take a flashlight and look in front of the front wheel or open hood and look at it from the front side. 2 holes on bottom and 1 on top. No TI on the 72 LT-1
8th. Should have a Winters snowflake intake manifold with casting # 3959594
for 1971 and 1972, per NCRS, 1970 should be #3972110. Both manifolds are aluminum (my addition).
9th. LT-1's had a Holley carb. so there is only 1 fuel line , no return line like a quadra-jet carb. Look along frame rail on passanger side for the single line. Also the fuel tank is different. There should be no nipple on the passanger side, side wall for a return line.
If you lay on your back under the rear wheel you can reach your hand up and feel for an indention on the passanger side. If there is a nipple that is capped off , then beware.
Also the single fuel line on a LT-1 was not the same line that was used to feed fuel on the 2 line set up. So if someone removed the return line the look of the 3/8 line is still different. Not a big difference but if you can look at a car with a 2 line set up then you can see what you do not want to find.
10th. LT-1's had solid lifters , but if the car does not then that is not to big a red flag. Many people do not like them and may have replaced with HYD. lifters during a rebuild.
11th. The hardest to fake and most expensive would be the 4 bolt main block. No # on the outside of the block can verify this.
Only way to verify is to remove the pan or have a lighted optical viewer and remove the drain plug.
12th. LT-1's use 2.5" exhaust pipes like the big block cars. But the manifolds were still 2" set up. So the pipes flair from 2 to 2.5" about 6 inches from the manifold. The exhaust hangar at the trans is also different. Look on line at the Corvette Central site and you can see both 2" and 2.5" hangars.
13th. As I recall the highest rear end gear was 3:36 if trans was a M20
4:11 Performance
14th. The 71 /71 LT-1 Aluminum valve covers should have a rubber oil cap not a twist in. These covers are very hard to find. All the catalouges sell the twist in cap style.
15th. LT-1's have the same heavy duty half shaft retainers as big block cars. look at the rear end side yokes, there should be caps with bolts. Base cars used U bolts with nuts.
16th. The rocker arms have a letter O stamped in them.
17th. The balancer on the crankshaft is an 8" unit not a 6"
That is all I know of. and you could not fake all of this and sell a car for a mid 20's price
Hope this might help. This one has the other important documents and story/history which would support authenticity for me.
Here is a great list I saved from a posting here:
There are a few things that only a LT-1 would have , some are pretty easy to change out and some are not very easy at all.in no piticular order.
1st. No 1970 or 1971 LT-1 had A/C
2nd. Emmission sticker on fire wall behind master cylinder should have letters AX on upper left corner for a 71.
3rd. All LT-1's are 4 speeds. (M20 was std , M21/M22 were optional)
4th. Tach has 6,500 RPM red line on 1970 & 1971 and on 72's w/o AC . 5600 for 72 with a/c
5th. All 71 LT-1's came with A.I.R. system. If removed should still have manifolds with holes for the tubes, Car may have headers and if so ask to see old manifolds.
6th. LT-1's had copper radiator W/O a overflow canisiter on the passanger side fenderwell. There should also be no holes whers one had been mounted.
7th. All 70 / 71 LT-1's had Tranisitor Ign. system. That may have been removed. But if it is removed look for the 3 holes on the front face of the driver side inner fender well where the Amplifer box was mounter.
Take a flashlight and look in front of the front wheel or open hood and look at it from the front side. 2 holes on bottom and 1 on top. No TI on the 72 LT-1
8th. Should have a Winters snowflake intake manifold with casting # 3959594
for 1971 and 1972, per NCRS, 1970 should be #3972110. Both manifolds are aluminum (my addition).
9th. LT-1's had a Holley carb. so there is only 1 fuel line , no return line like a quadra-jet carb. Look along frame rail on passanger side for the single line. Also the fuel tank is different. There should be no nipple on the passanger side, side wall for a return line.
If you lay on your back under the rear wheel you can reach your hand up and feel for an indention on the passanger side. If there is a nipple that is capped off , then beware.
Also the single fuel line on a LT-1 was not the same line that was used to feed fuel on the 2 line set up. So if someone removed the return line the look of the 3/8 line is still different. Not a big difference but if you can look at a car with a 2 line set up then you can see what you do not want to find.
10th. LT-1's had solid lifters , but if the car does not then that is not to big a red flag. Many people do not like them and may have replaced with HYD. lifters during a rebuild.
11th. The hardest to fake and most expensive would be the 4 bolt main block. No # on the outside of the block can verify this.
Only way to verify is to remove the pan or have a lighted optical viewer and remove the drain plug.
12th. LT-1's use 2.5" exhaust pipes like the big block cars. But the manifolds were still 2" set up. So the pipes flair from 2 to 2.5" about 6 inches from the manifold. The exhaust hangar at the trans is also different. Look on line at the Corvette Central site and you can see both 2" and 2.5" hangars.
13th. As I recall the highest rear end gear was 3:36 if trans was a M20
4:11 Performance
14th. The 71 /71 LT-1 Aluminum valve covers should have a rubber oil cap not a twist in. These covers are very hard to find. All the catalouges sell the twist in cap style.
15th. LT-1's have the same heavy duty half shaft retainers as big block cars. look at the rear end side yokes, there should be caps with bolts. Base cars used U bolts with nuts.
16th. The rocker arms have a letter O stamped in them.
17th. The balancer on the crankshaft is an 8" unit not a 6"
That is all I know of. and you could not fake all of this and sell a car for a mid 20's price
(1) All LT-1s, I believe came with the Big Block hood. However, for a Big Block car the BB hoods were all drilled to allow insertion of the 4..2..4 or 4..5..4 numbers to indicate the BB displacement. When a BB BB hood was to be installed on a LT-1, the three small drill holes per side can probably be seen to be filled with body putty.
(2) The Obvious!! On the sifter consoles, there's a metallic decal with the engine characteristics. On a 69 LT-1, you'll see 350/350...This indicates a 350 cubic inch engine with a 350 hp rating. Later years LT-1's will have their unique HP ratings listed. Yes, someone could have replaced this metallic decal. The are still available and I think there are by now counterfeit decals.
Last edited by 68/70Vette; 08-05-2015 at 10:24 PM.
08-05-2015, 10:59 PM
#11
Melting Slicks
Thanks1
Best run-down on LT-1 I've seen. However, I think you should also list two other "look for" items. One is a little subtle (1), the other is obvious (2)
(1) All LT-1s, I believe came with the Big Block hood. However, for a Big Block car the BB hoods were all drilled to allow insertion of the 4..2..4 or 4..5..4 numbers to indicate the BB displacement. When a BB BB hood was to be installed on a LT-1, the three small drill holes per side can probably be seen to be filled with body putty.
(2) The Obvious!! On the sifter consoles, there's a metallic decal with the engine characteristics. On a 69 LT-1, you'll see 350/350...This indicates a 350 cubic inch engine with a 350 hp rating. Later years LT-1's will have their unique HP ratings listed. Yes, someone could have replaced this metallic decal. The are still available and I think there are by now counterfeit decals.
(1) All LT-1s, I believe came with the Big Block hood. However, for a Big Block car the BB hoods were all drilled to allow insertion of the 4..2..4 or 4..5..4 numbers to indicate the BB displacement. When a BB BB hood was to be installed on a LT-1, the three small drill holes per side can probably be seen to be filled with body putty.
(2) The Obvious!! On the sifter consoles, there's a metallic decal with the engine characteristics. On a 69 LT-1, you'll see 350/350...This indicates a 350 cubic inch engine with a 350 hp rating. Later years LT-1's will have their unique HP ratings listed. Yes, someone could have replaced this metallic decal. The are still available and I think there are by now counterfeit decals.
08-05-2015, 11:06 PM
#12
Melting Slicks
those 69 LT-1s were the best ones built. to bad they did't build any.
08-06-2015, 08:10 AM
#13
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08-06-2015, 09:34 AM
#14
Melting Slicks
Mike, I don't think so, Bizzoco book has been wrong a few times.
no proof that GM made any factory built LT-1s in 69 RPO runs.
no proof that GM made any factory built LT-1s in 69 RPO runs.
08-06-2015, 01:38 PM
#15
Melting Slicks
