School me on Edelbrock carb adjustment.

dackers

dackers

Well-Known Member
Joined
Aug 30, 2013
Location
Mill Spring, NC
I have a 1977 Jeep J10 with AMC 360. I've put an Edelbrock 4 barrel 650 cfm carb. I've got great mechanical aptitude and lots of auto mechanic experience, however, I've never been any good with carbs. Please help, any tricks and tips would be great!

Edelbrock Thunder Series AVS New; 650cfm; Square flange; Manual choke; Without EGR; Includes primary jet-.095/Secondary jet-.098/Metering rod/Dual plane intake
Carb.PNG
 
There's a few generically informed "carb tuning lessons" on Youtube from "Edelbrock". Besides that, they are pretty much set and you can't tune them very much. Floats are set by using a drill bit (forgot size). Spring loaded needles will help fix flooding issues. Besides that, I found they are extremely sensitive to dirt (without spring loaded needles). So if flooding is an issue, make sure you have a good clean filter installed.
CFM carb size / Cubic inch should be proportional. Say a 170-250 hp stock motor needs no more than a 500 cfm. Think that's the smalles cfm size they even make in a 4 barrel?

Hope that helps...
 
The only issue I'm having is the idle adjustment. Doesn't matter how much I open it up, when at idle the engine dies. WOT is right on and plenty of power, only dies when idling unless I feather the accelerator which is extremely sensitive (and sounds obnoxious as hell with straight pipes).
 
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