[Lou Merrell]

Then most I got was a 600 double pumper. Then a note saying the number was too long.

 

[Jim Mac]

https://www.google.com/url?sa=t&sou...FjACegQIChAC&usg=AOvVaw2Ff7SU9VRbgAopkNS1szsH

[/URL]
600 double pumper. jim

 

[Lou Merrell]

Jim, the url is invalid.
I did go to Holley and they said it could be 600-850 CFM.
I'll have to research a little more. It has chromed fuel bowls.
I'll check for more numbers.

 

[Lou Merrell]

So, how do I find what CFM I have?
I know I have an electric choke.....

 

[Lou Merrell]

Just saw the PDF file. Listed just as Jim said 600 CFM. But metering block numbers are different? Checked the throttle bore diameters at 1.563 as listed (1 9/16).

 

[vortec710]

4776...Holley says 600cfm double pump, IF it is still in its original configuration, the chrome fuel bowls indicate they have been “updated” or whatever, the -3 after the 4776 indicates the third version, like a -1 would indicate the first version, metering block #’s are ...?.

 

[LevonH]

4776-3 Carburetor Info Page

www.carburetion.com

 

[Lou Merrell]

4776...Holley says 600cfm double pump, IF it is still in its original configuration, the chrome fuel bowls indicate they have been “updated” or whatever, the -3 after the 4776 indicates the third version, like a -1 would indicate the first version, metering block #’s are ...?.

Primary= 11169
Secondary= 111398

 

[Georgia69]

4776 = 600
4777 = 650
4778 = 700
4779 = 750
4780 = 800
4781 - 850

All double pumpers - always been that way

 

[Tom Mobley]

those are the traditional numbers left over from the 60's. New production may/will have different numbers. many are 5-digit. Your buddy google knows about them too. just search google with a term like Holley LIST #3310 or whatever.

 

[David Ray]

From the Holley Illustrated Parts & Specs Manual,

LIST - 4776 - 3 listing,
4776 - 600 cfm, first design, A/M (aftermarket), dual diaphragm pump (manual secondaries, dual feed, dual accelerator pumps)
-3 - 3rd revision from original design, could be anything, jetting, accel pump cams, bowls, name it.

Good carb for a moderate compression ratio, solid lifter 283/327 with 3, 4 or 5 speed manual trans

 

[Lou Merrell]

Thank you guy's.