How do i tell if my carb is.....

Question

I have a holly double pumper 650cfm vac. secondary manual choke how do i tell if it has a internal or external vacuum source and is the somewhere i can take the part # and find out more about this carb thanks

Answer 1

i think it has an internal pump

Answer 2

Nobody knows more about these than the folks at Holley!

Check it out!

http://www.holley.com/TechService/

Answer 3

this site may help ?

http://www.holley.com/types/Double%20Pum...

the term " holly double pumper" sort of gets me horny

Answer 4

i think it has a external pump