what carbureter was original?

[js29no]

What carburetor would have came on my 70 383 4-speed gran coup? someone said they thought A holly 780 double pumper, what say you.

[HP_Cuda]

Holleys were used on certain 383's:

1970 383 4bbl 330hp AVS
1970 383HP 4bbl 335hp Holley

[anlauto]

Wouldn't be a "double pumper" and would be more like 570 cfm's 

[BFM_Cuda]

The red book says a holley with the 4 speed. #R4367A , or #R4217A with ECS.

[vinb]

I think the  70 330HP was a AVS 600 or 625 cfm? ?

AVS :

#4763S & #4732S auto
#4732S  A/C cars
#4734S w/E.C.S.

 70 335hp

HOLLEY:

R4367A
R4368A
R4369A also with A/C

R4217A  w/ECS
R4218A  W/ECS

Alt carbs :   4667,4668,4688,4734,4735,6191,6193

Intake Manifold #2951666

[Chryco Psycho]

Probably the Holley 4160 square bore vacuum secondary 600 CFM

[moper]

I think the  70 330HP was a AVS 600 or 625 cfm? ?

AVS :

#4763S & #4732S auto
#4732S  A/C cars
#4734S w/E.C.S.

 70 335hp

HOLLEY:

R4367A
R4368A
R4369A also with A/C

R4217A  w/ECS
R4218A  W/ECS

Alt carbs :   4667,4668,4688,4734,4735,6191,6193

Intake Manifold #2951666

x2