WOW THERE IS ALOT TO CONSIDER ,iI CAN SEE CLEARLY WHAT EACH OF YOU ARE SAYING,
ISNT A EDELBROCK GOT MANUAL SECONDARYS ALSO? I WAS LOOKING AT THEM THEY ARE SOMEWHAT CHEEPER, I SEE THE 750 PEFORMERS ARE A 1407 , 1410 , AND A 1411 SO THATS CONFUSEING TOO,
I USED TO HAVE A 69 RUNNER 383 AUTO 750 DOUBLE PUMPER AND HAD A BIG DEAD SPOT WHEN YOU HAMER ON IT TILL RPM'S WERE THERE,I THOUGHT THIS WAS BECAUSE OF THE BIGGER CAM , MAY HAVE BEEN BECAUSE IT NEED WACUME SECONDARIES SO IT DIDNT TAKE ALL THAT FUEL BEFORE IT WAS READY FOR IT,, WELL THEN I CONVERTED IT TO A 4 SPEED AND WAS AWSOME CUZ I COULD KEEP THE RPMS WERE THEY NEEDED TO BE,
I WAS THINKIN THAT BECAUSE OF THE CUBIC INCH FROM 383 TO THIS 440 THAT I MAY NEED A 850 , BUT GUESS THATS NOT TRUE,,
VERY THANKFUL FOR ALL THE ADVICE , I LOVE THIS SITE!!, SEE I'M DISABLE AND CANT HARDLY EVEN STAND OR WALK ANYMORE, MY DREAM CAR IS A 71 ROADRUNNER 440 FOUR SPEED SO IM COLECTING EVERYTHING I NEED FOR MY SON TO PUT IT TOGETHER FOR ME