Thread: Question about a 5.3 LM7 in a crew cab dually?
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Old 10-08-2010, 10:06 PM   #9
Number21
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Re: Question about a 5.3 LM7 in a crew cab dually?
Quote:
Originally Posted by Matt Man View Post
a carb 454 is rated at 230hp and 380 pound feet of torque and i think the tbi ones made 240hp.
Depends on the year, the EPA really killed the 454 in the late 70s.
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