Originally Posted by Rob440Magnum
According to Jim Schild's book, in 1970 the center carb was different depending if you had an automatic or 4 speed tranny.

R4375A - 4 speed carb
R4376A - automatic carb

R4383A - rear carb
R4382A - front carb

What was the difference on the center carbs?

What exactly is holley reproducing today for the 440 six pack setup?

My Challenger that I will be installing this on is a 4 speed car.

Thanks, Rob

Holley made more than those two List # for both 1970 CA and non CA six pack cars, according to Holley master parts catalog scope I remember seeing 3 or 4 more center carb List #s. Dang the EPA anyways rant
Mopar had Holley reproduce the 1971 non CA automatic six pack carbs is what I remember now shruggy They will have a -1 after the List number on those later carbs scope

Last edited by Cab_Burge; 03/25/20 04:31 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)