Re: 88-90 454 gas mileage
87 crew cab shortbed tbi 454\400 308 gears 6 to 7 mpg full or empty. thats why its getting a 5.3 4l60e. Jay
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Current trucks:
(48 GMC100 320 inliner) Gone
(48 Suburban in pieces) Sold
87 GMC CCSB 5.3 4l60E Daily Driver
ECTA National record holder XO/PP
We never really grow up, we just learn how to act in public.
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