Hello all,
I have an 85 mustang gt with a 351 winsor engine ( high performance ), Carbuerated, 5 speed T5 transmittion me and my father are working on. We finally got it to start up after 4 months of converting it from a 302 with AOD and Fuel Injection. We even fixed a few vaccuum issues that were keeping the brakes from working properly. We are now facing the dilemma of the engine idling too high and was wondering what the problem could be. We have checked for any vaccuum issues but its hooked up to the same vaccuum T that the brake booster line is hooked to and that works perfect. Could it be that we have a racing carb on the vehicle? if not what else could it be? any help is appreciated.

 

can anyone at all help me?

 

turn your idle screw down until your happy

 

How big is the carb your running?

 

When you say turn the Idle screw down do you mean bring it out more? because my father has it all the way out. As for how big the carb is I will have to reply to this in a couple hours on that.

 

is this a real racing carb ie 4 corner idle circuitry? what is the timing set at this has to be set right before tuning carb

 

We havent set the timing yet because we were messing with the distributor to find an idle that is a bit lower (which of course throws off the timing). I will reply to wether its 4 corner idle circuitry in an hour.

 

It is a double pump carb with four corner idle system. We believe it is a holley 4150 Ultra HP series.