LT1-LT4 Modifications 1993-97 Gen II Small Block V8

is high mileage a problem?

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Old 04-07-2006, 11:31 PM
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Thumbs up is high mileage a problem?

Is high mileage a problem for stock lt1's? My lt1 has 146,000. Does the mileage make them loose any power? Shoule i invest in motor mods or just buy a low mileage motor to mod on?
Old 04-07-2006, 11:35 PM
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With it being a cast iron block they do infact last a long time. As for modding if you plan on doing basic boltons such as exhuast and intake you should be ok. It won't be as strong as when it came out of the factory but like i said the cast iron block is made to take some punishment. But If you plan on heavily modding I would get a new LT1 motor or rebuild yours.
Old 04-08-2006, 01:54 AM
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A friend is running a 95Z with 164,000 and a 125 shot with no problems as of yet.
HVY SS
Old 04-08-2006, 04:18 AM
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mine is a 94 z28 and has just over 160, running fine
Old 04-08-2006, 03:51 PM
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you should be fine man, my car has like 98xxx on it and im spraying a 75 shot and its just perfect!
Old 04-08-2006, 04:38 PM
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142,000 miles and boltons. CC503 coming soon.
Old 04-08-2006, 05:48 PM
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120k+ (162k on the clock with 3.73s for alooong time, with no speedo correction)
I have a lot of bolt-ons, a HotCam+125 shot!
STILL a 12secNA 11secN2O car



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