75 SCAMP DIES WHEN I STAB GAS PEDAL FROM PARK TO DRIVE. RUNS GOOD OTHER WISE

[75 plymouth scamp]

Hey ya'll i have a 75 scamp..318 brand new from summit 650 cfm avs 2 edelbrock carb........new wires, new plugs, new fuel pump new gas tank new one pin gm alternator and im running hei gm distributor......car runs good down the road but two things when i stand on it at 50 it stumbles hard. then in the drive way from park to drive as soon as i kick it down it almost dies or dies every time. idles smooth as can be runs good but i cant figure out what is going on . bought it uses. i can tell it has a mild cam but unknown size. could i not have enough vacuum? for said cam or idk what going on any help is appreiciated be happy to answer any questions. thanks guys

 

[69FBCuda]

Have you checked the accelerator pump lever adjustment?

 

[OldmanRick]

It's possible the sec'd air door is opening too quick.

 

[75 plymouth scamp]

It's possible the sec'd air door is opening too quick.

on the AVS 2 CARB? is there a way to adjust it? sorry for my ignorance. thats why im here lol

 

[75 plymouth scamp]

i have tried to adjust that middle hole or last hole same deal....

 

[Bewy]

First things first:
[1 ] Remove carb & check float level, should be 7/16". If you are careful, you will not need any gaskets.
[2] Turn the carb over & see how much transfer slot is showing at idle. 0.020-0.040" is ideal, 0.060" is iffy & more is no good. This dimension is critical to carb operation.
[3] What is the ign timing at idle?
[4] Report back.

 

[OldmanRick]

Ask Away! with Jeff Smith: Adjustments for an Edelbrock AVS2 Carburetor with a Slight Hesitation