factory horsepower
Feb 26, 2005 | 12:16 AM
#11
TECH Veteran
Joined: Mar 2004
Posts: 4,632
Likes: 2
From: Sun Diego
The stock '03 and older 5.3L makes 285 HP at the crank, equating to about 240 RWHP. Mine dyno'd at 238 RWHP, right where it should have. Can't speak for the '04 and up, which is rated at 295 crank HP.
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