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Old 04-06-2009, 05:13 PM   #1
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Default how much horsepower does an LT1 really have

i have read that the 275/285 hp was a conservative estimate by gm for the 4th gen lt1
i was wondering how much does everyone think they truly have stock
i got a 95 z28 a4 with a cai, mac cat back exhaust, air foil, ported throttle body
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Old 04-06-2009, 05:22 PM   #2
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id say thats what they really have. maybe a few more. most stock dynos show it to be that.
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Old 04-06-2009, 05:26 PM   #3
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275 flywheel HP is generally accepted as pretty accurate for the LT1 engines. It's the LS1's that were supposedly underrated from the factory.
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Old 04-06-2009, 05:32 PM   #4
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ok
why from 95 to 96 did the lt1 gain 10 hp
all that was different was dual cats
can they make that much of a difference
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