I have a gen 6 502 according to the casting # in my '94fever and I have no history or specs on the motor. According to the casting # it's a '96 motor so I know it isn't the original motor that came in the boat. I would like to know the CFM of the Holley carb, but there isn't any list # on it. I got these #'s off it when I rebuilt it last month...Series: 4150, Pri & Sec jets: 75, Pri & Sec throttle plates: 180 and on top of the Main Body #:6R-7867B. Any ideas on my CFM? All info will be appreciated.

I found it was a 950 via Google, however, Holley doesn't have it listed anywhere on their carb sheet.

Just found this sheet though. I wonder if that carb is set up for alcohol...

http://tgsperformance.com/holley.htm

My engine is too mild mannered to be running a 950CFM. I've looked all over google myself, but haven't found anything concrete. I'm including a couple of pics for a visual hoping this will help to ID it.

That's an HP main body.. Maybe some bastard carb someone put together. Maybe an HP830, or HP850?

An HP950 does not really flow 950cfm. More like 850cfm, so it could be an HP950.

I'm running a Holley/Prosystem modified HP 950 on my 439. It flowed 830 CFM. I know the base plate is a prosystem design but as Griff said a HP 950 does not flow 950 more like 850.

I have a hp950 that has the same casting number on the main body. I put it on my hp500 this past weekend and it ran good. It idled good. Mine has 84 jets in it and ran alittle rich though.