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OrrieG · 07-31-2009, 11:12 AM

If your truck has the original hand throttle you may need to just pull it out a little when running the ac. Other wise, Ray is right the 60's cars with ac had what he described, I changed out the carb and manifold on my original 64 and had to go back and rig one up so it would kick the idle up.

07-31-2009, 11:12 AM	#4
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: AC on GMC 270 If your truck has the original hand throttle you may need to just pull it out a little when running the ac. Other wise, Ray is right the 60's cars with ac had what he described, I changed out the carb and manifold on my original 64 and had to go back and rig one up so it would kick the idle up. __________________ 1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project