Thread: 350 vs 454 in mileage
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09-07-2004 07:23 PM #14
CHR Member
- Join Date
- Jan 2004
- Location
- 30min SouthSouthEast of Sarnia
- Car Year, Make, Model: 86 GMC Sierra Classic
- Posts
- 78
newest figures
12.4-15.2mpg
with my 357ci SB.
with everything being close to the same.
couple more lbs for the BB.
with the added cubic inches.
will it really draw much more fuel?
same carb. milder cam.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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