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Old 09-03-2016, 02:54 PM   #1
Jarvis-69 GMC 1500CK
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Join Date: Aug 2016
Location: North Sask, Canada
Posts: 84
Is my truck possibly under powered?

Got a old 305 under the hood, sounds great, starts great, but wondering if I could get better fuel efficiency with something slightly larger, like a 350. (is this 305 having to work OT to move this truck is my question essentially.) Apparently it is a "newer" 305, from early late 70's to early 80's. Weren't these engine known to be pretty weak in terms of power?
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