1974 Chev 350, standard points ignition. Heads, intake, and carb replaced recently. Old heads were 1.94 intakes & 76cc chambers. New heads 2.02 with 64cc chambers. Old Comp. ratio --8.5 to 1 Now 9.5 to 1. Stock cam retained. Valves are adjusted properly, motor is timed @ 8*BTDC, dwell@ 29*. Carb is adjusted correctly. No vacuum leaks. Car misses at light throttle coasting down the street at about 30mph. Also misses at higher speeds. It's not a dead miss from one cylinder. What am I overlooking???
2006-07-03 10:35:40 · 3 answers · asked by dathinman8 5 in Cars & Transportation ➔ Maintenance & Repairs
i would think carb problem (off idle circut not functioning right... float setting or plug ports) or worn dist shaft causing points to "float" try to install a direct ignition see if problem goes away....atleast u will eliminate the point thing! try another carb too! even wrong plugs may be cause! stay directed to ign area.
2006-07-03 10:44:24 · answer #1 · answered by james d 2 · 0⤊ 0⤋
block all wheels and put in drive and adjust the timing. then put in park and set the idle then put in drive then re-check the timing.
2006-07-03 17:46:34 · answer #2 · answered by david_strickland31 3 · 0⤊ 0⤋
YOUR CARB IS LOUDING UP
2006-07-03 17:39:08 · answer #3 · answered by RAYMOND B 1 · 0⤊ 0⤋