My 1980 250 inline six had been swapped from the varijet carb to an old rochester 2G carb when I bought it. I have rebuilt the carb and fabricated a nice aluminum spacer (
http://67-72chevytrucks.com/vboard/s...=616795&page=7 ) for it, but still have some driveability issues. It is now tuned well enough to pass emissions testing, which I did last August.
The problem I have been having is with a flat spot, or bog, on acceleration. Steady state cruise, idle, and gentle acceleration are fine, but if I stab the throttle quickly, it noses over and I have to back off the throttle for it to recover.
Are there any carb tuning wizards on here that know what my problem may be?
12-18-2014, 01:58 PM
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