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**bwood** · 01-23-2007, 09:57 PM

I avg 20-22 highway and 15-16 in town and around 19-20 pulling my motorcycle trailer loaded down with tool box and bikes. Intake gaskets done at 69k under ext warr. If you do them, get the new Fel Pro metal/rubber ones, the factory ones are plastic and fail with the constant heating and cooling of the engine. I used a similar set on my wifes 99 Malibu V6 and they are great. Oh by the way, 98 Sierra reg cab/short bed, 305, auto, 3.42.

01-23-2007, 09:57 PM	#21
bwood Registered User Join Date: Jan 2003 Location: Denison, Texas Posts: 1,919	Re: How Many MPG does your Vortec get? I avg 20-22 highway and 15-16 in town and around 19-20 pulling my motorcycle trailer loaded down with tool box and bikes. Intake gaskets done at 69k under ext warr. If you do them, get the new Fel Pro metal/rubber ones, the factory ones are plastic and fail with the constant heating and cooling of the engine. I used a similar set on my wifes 99 Malibu V6 and they are great. Oh by the way, 98 Sierra reg cab/short bed, 305, auto, 3.42. __________________ 1998 GMC Sierra SLE 1/2 ton 2WD 305 Vortec -Gibson Stainless Cat Back Swept Side -SS Wheels 2005 Honda CRF250R 2006 Honda CRF150F Last edited by bwood; 01-23-2007 at 10:01 PM.