Plugged fuel filter, bad fuel pump, crimped, or plugged fuel line.
Your fuel pump is most likely the cause.
12 mpg
gettin to much gas to the carb
8-16 mpg
The actual mileage that can be achieved in a Chevy depends on which Chevy you actually own. For example a well tuned Chevy 350 will do around 14 miles per gallon.
My stock 350 is 14city 19 highway.
inside the gas tank
NO, gas parts and diesel parts do not need to mix.
87 octane should run just fine.
i cant be completely certain, but i don't think so... they look similar, but i tried doing the same thing with a 1981 350 and a 1994 350... the holes on the block do not line up exactly. but like i said i cant be certain. hope this helps
no
Sounds like you need to adjust the linkage.