Thread: 350 vs 454 in mileage
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03-24-2004 08:33 PM #3
CHR Member
- Join Date
- Jan 2004
- Location
- 30min SouthSouthEast of Sarnia
- Car Year, Make, Model: 86 GMC Sierra Classic
- Posts
- 78
my truck has no load in it or behind it. 95% of the time.
I get as good as 13mpg with my 357. my old 305 was wore on gas.
1/2 ton truck 4500 or so pounds.
3.73 gears and a built TH350 tranny.had a rebuilt 355SB chevy
it lasted 42,000km
Got another rebuilt 355SB
it lasted 62km.
I still have not had a powerful engine.
slowly building a quicker truck
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