Used for high performance or larger displacement engines they are infinitely tunable. A holley 750 double pumper has fallen into my lap and is going atop a mild 350 in my 1975 camaro replacing a tired and badly tuned quadrajet that im just sick of messing with.
Holley 0 4779c 750 Cfm Double Pumper Carburetor Mechanical Secondary Manual Choke Dichromate
Holley double pumper 750 tuning. Welcome back to the channel. This video will cover some of the basic. Carb a standard transmission can use a double pumper carb. How to tune holley carburetors. If you have an automatic transmission you will need a vacuum sec. On your engine.
Lets say you have a 750 double pumper holley 0 4779. A 750 double pumper holley carburetor is a high performance carburetor that incorporates two accelerator pumps that are manually operated. Itll get a 2400 stall in the future. Its got a th350 with an 1800 stall and a 308 not optimal but ill shift in manually most of the time most likely anyways. Today im going to take off the holley 750 cfm carburetor on my 1970 corvette and show you how i do a basic setup. Power valve tuning theres more to tuning the holley power valve on the primary side than just choosing when the valve opens.
The mechanically operated double pumper carburetors seldom come with an electric choke. You take the engine cubic inch and multiply by the maximum rpm and divide by 3456. How to tell what size carb you need.
Gallery of Holley Double Pumper 750 Tuning
