[Rick Parker]

A 750 DP is set up to run very rich at part throttle. It is a competition carburetor the air correctors and fixed jetting in the metering plates will keep the part throttle mixture real "fat". Holley has done this to prevent a lean condition in a bolt on application. A good suggestion is to enlist the help of a competent carburetion shop or tuner such as Barry Grant, Brasswell, Reed or others and get the fuel curve changed. They will also possibly reccomend a cam change. They will need all of the specifics of your setup.

Good luck

Rick

PS: You normally cannot use Brass, or plastic floats with this application in the pressurized environment as they will collapse. Severall other modifications must be done to the carb as well to run in a pressurized enclosure.