Quote:
Originally Posted by big hammer
word. all ls1's in f bodies were underrated. all were around 350 hp at the crank.
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LS1's were underrated in the Fbodies.
LS1 A4 Fbodies dynoed down in the 270 - 280 range.
LS1 M6 Fbodies dynoed in the 300- 310 range.
Some guys dynoed higher on the more generous dynos.
That puts the LS1 around 350hp at the crank.
But stock vs stock - the 5th gens have the advantage. The 5th gen runs about .2-3. tenth faster and traps a good 2-3 mph higher (on average).
If a stock 4th gen ran 12.9 - 13.0 @ 110 mph it was a real fast run with a very high trap speed (well above average), but a 12.9 - 13.0 @ 110 mph is a magazine average time for the 5th gen.
Magazine average for the 4th gen was around 13.3 - 13.5 @ 105 mph.