I was wondering if anyone has upgraded their cam from stock and what effect it had on driveability and mileage. I have a 85 K20, 350 4b with a 4 speed manual (1st is granny gear) Im not sure what the ...
In 1993 my bother-in-law souped up a 400 small block, we both pull from Ia. to Montana he got4 to 5 mile per gallon. I got 9.8 miles per gallon with little 6.2 diesel.