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Mod | | | Forums66 Topics128,017 Posts1,055,338 Members48,419 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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#21657 08/20/2003 3:32 AM | Joined: Dec 2001 Posts: 215 Shop Shark | | Shop Shark Joined: Dec 2001 Posts: 215 | just wondering if
higher compression would lower top MPG a at 55-65 MPH in my brothers 67 3/4 ton chevy whith 283
the strange thing is is that this truck has
4.56-1 gears a turbo400 and 283 was this stock?
it will only do 60 mph and get poor milage.
he plans to swap to 3.73-1
swap the large Holly carb
for somthing whith better milage
and mabe juice up the engine a littel
if possible | | |
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