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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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