Thread: 350 vs 454 in mileage
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03-24-2004 07:25 PM #1
CHR Member
- Join Date
- Jan 2004
- Location
- 30min SouthSouthEast of Sarnia
- Car Year, Make, Model: 86 GMC Sierra Classic
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- 78
350 vs 454 in mileage
If you have gone from a 350 to a 454 big block.
Was there a big difference in gas mileage?
Could the Big block go 80% as far on the same tank of fuel?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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