I have a 383 with Dart Pro 180 72cc heads on top of flat top 2 valve relief pistons with a Comp Cams XE 262 hyd camshaft and a 88 TPI unit in my 1962 Nova. I am using 24 lbs injectors 58mm Holley throttle body. When I start the car the idle comes up and will not settle down until it idles for 5 minutes or so.

Any help???

Thanks Mitch

 

Checked the IAC?