97 Votec 5.7 HP
'94Blackbird
10-06-2005, 09:36 PM
I have a '97 Z71 Silverado with a 5.7 liter vortec 350 and I would like to know what the HP rating is on this motor. Also my brother has a '99 short wheel base with a 4.3 liter and we were wondering what the HP was on that. He has a 5 speed standered and its 4 wheel drive what should he expect for gas mileage? Thanks anyone
97sle
10-19-2005, 04:39 PM
The silverado is under rated at 255hp, most people think closer to around 280 hp, and the 4.3L is 190 hp. Not sure on gas mileage tho
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