james_topless67

What should I set my idle to. I have a 289 manual with a agressive cam. It was set to 800. I installed a vintage AIR a/c kit in it. The A/C man set the idle to almost 1000. It drips down when the A/C is running but when it is off and the choke is open it is almost 1000. I think it is too high. Should I set the idle speed with the A/C running or off and what should it be?

Starfury

I'd set it as low as you can get it with the engine at operting temp and the a/c on.

urban_cowboy

Mine is set to 750 with AC on and about 950-1000 with AC off. Much less and it stalls with the AC on, but that is going to be different for every engine depending on the cam specs and carb size.

JMD

Might be able to adapt a later model A/C solenoid to open the throttle a little when the a/c compressor is running....

Something I might need to consider for the 66 once I get the a/c up and running.

james_topless67

I was thinking about getting the a/c solenoid. I guess I will have to leave the idle where it is until I get the solenoid. Its about 750-800 with the a/c on now.

james_topless67

does anyone know where i can get the a/c solenoid for an edelbrock carb?

racin66coupe

http://www.edelbrock.com/automotive_...hun_perf.shtml
go down untin you see idle compensator kit. im guessing thats what you want

urban_cowboy

I am not familar with the A/C solenoid...What does it do? I assume itopens the throttle some when theA/C is on...?

james_topless67

yes it opens the throttle when the a/c is on. It attaches to the same lead the compressor clutch

urban_cowboy

I found one for my Holley 4150, but do not see one for Edelbrock carbs.