what does LT1 mean?
Thread Starter
1st Gear
Joined: Jun 2009
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From: Waymart PA
what does LT1 mean?
My new(for me) 90 convertible has "Lingenfelter Performance Engineering" across the windshield and LT1 with a Corvette symbol on the rear. What does LT1 mean and does "Lingenfelter" have anything to do with it.
Tnanks,
Earl
Tnanks,
Earl
Safety Car
Joined: Oct 2008
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From: Los Angeles CA
no, just a new induction hardware introduced by chevy after the tpi cars, I think a 90 is still a tpi car.
Le Mans Master
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From: The Old Dominion
LT1 was the engine designation for all Corvette V8's from 1992 through 1995, and on all automatic 1996 Corvettes. Your 1990 came with an L98, not an LT1. It's possible someone swapped in a take out or crate LT1, but it's more likely it either isn't an LT1 at all, or it simply has a similar intake manifold.
Can you take a picture of the engine?
Lingenfelter Performance Engineering is a well-known modifier of Corvettes and other cars. It is possible they did work on the car, but it's also possible the previous owner was just a poser.
Can you take a picture of the engine?
Lingenfelter Performance Engineering is a well-known modifier of Corvettes and other cars. It is possible they did work on the car, but it's also possible the previous owner was just a poser.
Drifting
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LT-5 was the designation for the 32-valve dual overhead cam V-8 which was installed in all ZR-1s built from 1990 to 1995.
This is also a V-8. Designed by Lotus Engineering in Great Britain and built and assembled by Mercury Marine in Stillwater, Oklahoma.
The LT-5 engine was the only factory produced V-8 engine (installed in ZR-1s built in Bowling Green, Kentucky) sold by General Motors which was not built by General Motors.
Just wanted to make sure our questioner was not confused by our answers.
This is also a V-8. Designed by Lotus Engineering in Great Britain and built and assembled by Mercury Marine in Stillwater, Oklahoma.
The LT-5 engine was the only factory produced V-8 engine (installed in ZR-1s built in Bowling Green, Kentucky) sold by General Motors which was not built by General Motors.
Just wanted to make sure our questioner was not confused by our answers.
Le Mans Master
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Same block dimensions , many internal parts interchange with earlier engines but redesigned cyl heads , reverse flow cooling ,a short runner intake and a front mounted dist
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isn't it an option code?
LT1-LT5-LT4-L83-L98-FX3-F45-FE1-Z51-G92-
LS1-2-3-6-7-9
LT1-LT5-LT4-L83-L98-FX3-F45-FE1-Z51-G92-
LS1-2-3-6-7-9
Le Mans Master
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LT1 means lots of money when it comes to a C3...........
Drifting
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From: Chicago Executive Airport, formerly known as Palwaukee
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St. Jude Donor '12-'13-'14-'15-'16-'17
It is an RPO code.
What exactly does RPO stand for?
Regular Production Option? Just my guess.
What exactly does RPO stand for?
Regular Production Option? Just my guess.
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LT1 is an engine code, because corvettes and cars in the 70's had them, the difference for a c4 corvette is the intake that comes on it, compared to the L98 model which has a long tube runner intake, both are tune ports though.
corvettes through out the years or cars period have letter and number engine codes, you just see it used more here, to distinguish years
corvettes through out the years or cars period have letter and number engine codes, you just see it used more here, to distinguish years
Le Mans Master
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Example
All 1996 Corvettes blocks are 10125327
LT1 suffix: ZXA
LT4 suffix: ZXD
Heads:
10207643: 350 CI, 300 HP, AT (A4) (LT1)
12551561: 350 CI, 300 HP, LP (Late Production) (LT1)
10239902: 350 CI, 330 HP (LT4)
12555690: 350 CI, 330 HP, LP (Late Production) (LT4)
On 1984, 1986 there were 10 different suffixes, what the heck happened those years?
So, were the LT2 and LT3 prototypes that never went into production?
Melting Slicks
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From: Palm Beach
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"The LT-1 was the ultimate 350 cu in (5.7 L) V8, becoming available in 1970. It used solid lifters, 11:1 compression, a high-performance camshaft, and a Holley four-barrel carburetor on a special aluminum intake to produce 370 hp (276 kW) and 380 lb·ft (515 N·m). It was available on the Corvette and Camaro Z28."
The "LT1" designation was later reused on a Generation II GM engine, the LT1.
The original LT-1 was considered the most powerful small block ever manufactured and was very similar to the 302 cubic inch Z28 engine which was made between 1967 and 1969.
The "LT1" designation was later reused on a Generation II GM engine, the LT1.
The original LT-1 was considered the most powerful small block ever manufactured and was very similar to the 302 cubic inch Z28 engine which was made between 1967 and 1969.
Melting Slicks
Joined: Jun 2000
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From: Tampa Florida
The early LT-1 generation was the most powerful SBC...until the LT1 (Gen II) arrived.
This is true in HP and TQ...remember early was gross HP ratings (360/370) and the modern is a far more conservative number/calculation.
This is true in HP and TQ...remember early was gross HP ratings (360/370) and the modern is a far more conservative number/calculation.
Last edited by No Go; Jun 9, 2009 at 05:29 AM.