Thread: LT1 is back
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Old 10-24-2012, 10:32 PM   #8
WildBillyT
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Quote:
Originally Posted by rickyd13 View Post
thought that the 4th gen lt1 put out 275? how does that beat 370?
Quote:
Originally Posted by BigAls87Z28 View Post
370 gross is about 275 net hp.

First, 370 gross is the LT-1 vette number, so you'd have to compare to 300 net for the vette LT1.

1970 LT-1 engine, all accessories through a factory style exhaust yeilds ~300-310hp net at the fly. That engine was 11:1 and had great heads for the time. 360 gross in the Camaro, 370 in the Vette. FWIW I've witnessed a few dyno pulls of these motors and 300-310 is where they ended up.

1971 LT-1 engine, same deal, but different heads from '70, compression was 9:1. Factory rated at 330hp gross , puts out around 275 net at the fly.

1972 LT-1 engine, same deal, but different heads from '70 and '71, factory rated at 255 net at the fly.

But it matters not. The new LT1 blows all that **** out of the water by a very wide margin.
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