Could be it although I think the 3310-1 and -2 were 4150 series carbs (rear metering block). Found a good article here about updating these with new ProForm main bodies. http://www.automedia.com/Building_The_Ultimate_750_Holley_3310/pht200011017h /1 Wish I'd kept a few that I've pitched over the years... SC -----Original Message----- From: Gary H. [mailto:spigot2039@xxxxxxxxxxx] Sent: Monday, November 23, 2009 7:43 PM To: 1962to1965mopars@xxxxxxxxxx Subject: Re: Holley carb ID Maybe this is it: Carburetor part number R3310-6 Model number 4160 CFM 750 Renew kit part number 37-754 Trick kit part number 37-933 Needle and seat 6-504 Primary main jet 122-72 Secondary main jet 134-21 Primary metering block 134-131 Secondary metering block 134-21 Power valve 125-65 Pump nozzle Size 0.031 Double check before you proceed though. Not sure of the source. Thanks, Gary H. -----Original Message----- >Rich Kinsley '64 Dodge Polara 4dr 318poly w/goodies > >I have a Holley carb that I'd like to ID. I was told it's a 750cfm. >It's a 4bbl double pumper with 3310-6 and 2959 stamped on the choke >air horn. There's a P-80 cast on the main body side. Under the air >filter gasket area there's a 6R 6931 and the sec nozzles are ^SR-107. >Can anybody ID it correct? ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.