what does LT1 mean?
Intermediate
Joined: Jun 2005
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And you are correct.
Take away all the plastic intake crap, maf, catalytic converters, mufflers, emissions stuff, install dual plane intake, carburetor, open headers, and the Gen II LT will make more like 380-400 gross HP.
Which is exactly what I'm installing in my dragster, except I'm adding an LT4 "hot cam".
Melting Slicks
Joined: Jun 2002
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From: Chesapeake Beach Maryland
2015 C5 of Year Finalist
A significant feature of the LT1 that I think has been missed here is the reverse flow cooling system of the late LT1 and LT4 engines. By reversing the coolant to cool the heads first before the engine block, the engineers were able to increase the compression while keeping detonation down due to cooler combustion temps. This was the single most important technical advance that the LT1 had over all previous small blocks.
Drifting
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A significant feature of the LT1 that I think has been missed here is the reverse flow cooling system of the late LT1 and LT4 engines. By reversing the coolant to cool the heads first before the engine block, the engineers were able to increase the compression while keeping detonation down due to cooler combustion temps. This was the single most important technical advance that the LT1 had over all previous small blocks.
When I spoke to Dave McLellan a few years ago, he told me the LT5 had some features of reverse flow cooling. They incorporated those features and added more into the LTx series. He said the cooling system of the LT5 is one of the reasons why that engine is practically bullet-proof even though it is incredibly complex.
SAVE THE WAVE!
Pro
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From: High Bridge New Jersey
Pro
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From: San Antonio TX
The stickers probably means the previous owner was just "Sticker happy" from wishful thinking.
Pro
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From: newark DE
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Intermediate
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Le Mans Master
Joined: Aug 2005
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From: No Opti Here Tn
St. Jude Donor '06
In 1990 all Corvettes had L98 engines
Yours may or may not have any Lingenfelter parts on it and it is definitely not an LT1 unless it was swapped out otherwise its just stickers
Lt1 was not the only engine from 91-96, LT5 an LT4 were also used
There is so much disinformation in this thread I forgot the rest of it
Yours may or may not have any Lingenfelter parts on it and it is definitely not an LT1 unless it was swapped out otherwise its just stickers
Lt1 was not the only engine from 91-96, LT5 an LT4 were also used
There is so much disinformation in this thread I forgot the rest of it
Safety Car
Joined: May 2003
Posts: 4,283
Likes: 0
From: Houston Texas
In 1990 all Corvettes had L98 engines
Yours may or may not have any Lingenfelter parts on it and it is definitely not an LT1 unless it was swapped out otherwise its just stickers
Lt1 was not the only engine from 91-96, LT5 an LT4 were also used
There is so much disinformation in this thread I forgot the rest of it
Yours may or may not have any Lingenfelter parts on it and it is definitely not an LT1 unless it was swapped out otherwise its just stickers
Lt1 was not the only engine from 91-96, LT5 an LT4 were also used
There is so much disinformation in this thread I forgot the rest of it
Last edited by BAM92; Jun 9, 2009 at 07:47 PM.
Team Owner
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From: Fort Knox, KY
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You are so right! A lot of folks are not aware of the reverse flow cooling system. I believe this system is the reason why so many LT1s and LT4s are accumulating so many miles!
When I spoke to Dave McLellan a few years ago, he told me the LT5 had some features of reverse flow cooling. They incorporated those features and added more into the LTx series. He said the cooling system of the LT5 is one of the reasons why that engine is practically bullet-proof even though it is incredibly complex.
SAVE THE WAVE!
When I spoke to Dave McLellan a few years ago, he told me the LT5 had some features of reverse flow cooling. They incorporated those features and added more into the LTx series. He said the cooling system of the LT5 is one of the reasons why that engine is practically bullet-proof even though it is incredibly complex.
SAVE THE WAVE!
http://www.gmhightechperformance.com...ing/index.html
Le Mans Master
Joined: Aug 2004
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From: Metairie Louisiana
Team Owner
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How much HP % do I loose with an automatic and 3.07 axle?
Le Mans Master
Joined: Apr 2005
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From: The Old Dominion
FYI, the L98 was rated as high as 350lb-ft for some years/trims. I believe both the L98 and LT1 were rated as low as 330lb-ft for some years.
