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Re: Gas Mileage 5.7L automatic K1500, 4WD
msd blaster coil. the one made for gm replacement $45.00 asp underdrive pulley $65.00 both from summit and of course k&n most any parts house around 50 bucks i spent like 2 hrs total putting all of this on and got immediate results the only draw back is that it does slow the accessories alt. a/c pwr. strng. at low rpms its kinda a pain, but at hwy speeds no prob. eventually i will get a high-end batt. a higher output alt. and elec. fan
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