Truck idles high in park/neutral
 

I've got an '82 with a 350 sb with a eldelbrock rpm cam and a 670 holley street avenger carb. For some season, my truck will idle higher when it is in park or neutral. and normal when in gear. Is this normal? I don't have a tach hooked up yet so I don't know what rpms it's at. This was a freshly built engine with maybe 60 miles on it.

Re: Truck idles high in park/neutral
 

They do idle up when not in gear cause here is no load on the motor. Mine idles at 575 but jumps up to about 900 not in gear.
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Re: Truck idles high in park/neutral
 

Advance your timing to 14-16 degrees, then slow your idle down. Shouldn't be that big a drop. Maybe 150 rpm at the most.

Re: Truck idles high in park/neutral
 

How big is that cam? It make like a looser torque converter. That can make a bigger drop when going into gear.

Re: Truck idles high in park/neutral
 

did you check the fast idle adjustment on your carb, that normally does the trick

Re: Truck idles high in park/neutral
 

I forgot to add is the a/c kicking on, that will cause a higher idle.

Re: Truck idles high in park/neutral
 

It's a edelbrock performer rpm cam, with a 3k stall converter. Which is what edelbrock recommended with the cam. Also no a/c on the truck. And I really haven't messed witj the carb much, other than the curb idle screw.
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