So i have searched every forum imaginable and keep finding threads that sound promising but don’t have my symptoms.
About the car:
81 350, quadrajet carb, edelbrock intake, vortec heads, comp 12-422-8 cam, roller valvetrain, 1.5 rockers, long tube headers, true duals, initial timing is ~10-12* btdc, all emissions stuff removed (air pump/egr/etc), ac removed.
all unused vac ports on the carb have been capped, really the only one still used is for the choke.
cold high idle is fine, i need to adjust the choke spring as I live in VA and not the northeast. Normal idle in park/neutral is 900-1000, in drive it drops to 7-800 and is steady. Sticker oncthe hood says 600 in neutral and 500 in drive. With my cam I’m not sure thats feasible...
once driving and its more than hot, i put it in park and the rpms go to the 900-1000 mark, then slowly creeps to 1200/1300/1400rpm.
Mixture screws are about 2.5 out, iab is around 4, i dont remember what the mixture control solenoid screw is put to (but i found a cliff ruggles book and thread and It was rebuilt to that ...i think 4-6 from bottom)
what would cause the rpm creep in park/neutral??? Strictly a vac leak or a mix between vac and carb settings?
About the car:
81 350, quadrajet carb, edelbrock intake, vortec heads, comp 12-422-8 cam, roller valvetrain, 1.5 rockers, long tube headers, true duals, initial timing is ~10-12* btdc, all emissions stuff removed (air pump/egr/etc), ac removed.
all unused vac ports on the carb have been capped, really the only one still used is for the choke.
cold high idle is fine, i need to adjust the choke spring as I live in VA and not the northeast. Normal idle in park/neutral is 900-1000, in drive it drops to 7-800 and is steady. Sticker oncthe hood says 600 in neutral and 500 in drive. With my cam I’m not sure thats feasible...
once driving and its more than hot, i put it in park and the rpms go to the 900-1000 mark, then slowly creeps to 1200/1300/1400rpm.
Mixture screws are about 2.5 out, iab is around 4, i dont remember what the mixture control solenoid screw is put to (but i found a cliff ruggles book and thread and It was rebuilt to that ...i think 4-6 from bottom)
what would cause the rpm creep in park/neutral??? Strictly a vac leak or a mix between vac and carb settings?
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