Well, I have a four barrel holley with vaccum secondaries and electric choke. I don't have it with me now but, what do I look for on it to figure out what size or kind it is??? It came with the 67 coupe I boughtitwasin thetrunk. Thanks, David

 

On the outside edgeof the main venturi duct towards the air cleaner post, there should be a 'list' number. That's the ID.
Jim

 

ok, thanks, when I get out of my open house I will check it out. Is there a source to goto on line to ref.the number?

 

Post it here, I have several books on Holly's.
Jim

 

chances are if it has rectangle bowls its a 600, and if the bowls are kinda like upsidedown V's its a 750....... those are the two cheapest (and therefore the most common) sized holleys around.

without seeing any numbers or even a picture my money is on a model 4160 600cfm.

 

It says list-3310-3 and the number below it is 2040 Thanks, David Well, just looked it up and it is a 750 4160 to big for what I will need it for.

 

a 4160 750? thats strange[&:] i thought all the 750's were 4150's

 

You can recheck but I got it off of Holleys site and found on Ebay for the 3310-3 and says 750 cfm Damn.

 

Yep, 750cfm

http://www.pirate4x4.com/tech/billav...20listings.pdf

 

I'm looking at 'Holly Rebuilding & Modifiying' by S-A books and it is listed as amodel4160, 750 cfm center inlet dual feed bowl type. Don't see any other important stuff except trick kit 37-921.
Jim