Help Exhaust backfire
#1
Help Exhaust backfire
1970 cutlass 350 bored .030, lopey cam, cold air intake, 10:25:1 comp, Holley 4150 vacuum secondary 650cfm,
At speeds between 25mph and 45mph if you attempt to hold those speeds to cruise the exhaust lets out a light pop pop pop pop until you wither eacclerate out of it or deaccerate out of it. Timing is a little advance with the 4:11 gears in the back, carb is tuned. any ideas?
At speeds between 25mph and 45mph if you attempt to hold those speeds to cruise the exhaust lets out a light pop pop pop pop until you wither eacclerate out of it or deaccerate out of it. Timing is a little advance with the 4:11 gears in the back, carb is tuned. any ideas?
#3
3 inch, no defintly the exhaust and ive tried exhaut leak and new gaskets all the way to the collectors from the headers, ive tuned the carb best i can and the timing is as good as i think it can get.
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