318 poly help

[drive48]

i need to see what carb i can use on my 4bbl cast iron manifold 1966 coronet
new style or old?
recommendations?

 

[rrunner]

New style or old??:confused:

 

[A383Wing]

the holes for the carb butterflies are small..you are probably gonna have to find a 67 or earlier AFB to bolt on there....

 

[rrunner]

A new holley 390 has some small butterflies, think even a 500 would work

 

[drive48]

# 2206384 G
afb style 4bbl
has 2 sets of mounts holes
looking to see what type of carb i need or can get to put on this intake
thanks

 

[A383Wing]

66 or 67 Carter AFB 4bbl will have smaller butterflies as well. carb is 625 cfm

 

[Meep-Meep]

66 or 67 Carter AFB 4bbl will have smaller butterflies as well. carb is 625 cfm

Are you sure those are 625 CFM?? I thought they were more like 450-ish.

 

[A383Wing]

Are you sure those are 625 CFM?? I thought they were more like 450-ish.

yup, according to all I have read and researched, maybe 600, but not lower...same carb was on the 440's in 66 as well....