[downdraft]

U have LOW VACUUM IN MANIFOLD. YOUR BRAKES REQUIRE VACUUM AND TAKES FROM MANIFOLD, THUS NOT LEAVING ENOUGH VACUUM FOR THE CARBURATOR. ALL HIGH LIFT AND MAINELY BIG DURATION NEEDS MORE VACUUM. CONNECT A VACUUM CANISTER TO INTAKE AND BRAKE WITH GAUGE, U WILL HAVE NO STALLING AT IDLE. THE CARB. MAY ONLY NEED A 2 SIZE DOWN JET SIZE ON PRIMARY. BURNOUT. i HAD SAME TROUBLE MY CAR, RUNNING TO RICH AND STALLING WHEN STOPPED. MT CAM HAS A 588 LIFT, 315 DURATION. i PUT A VACUUM CANISTER ON, IT WORKS. IT`S ALL ABOUT VACUUM.