The Ultra Double Pumper Carburetors feature all aluminum construction and are equipped with metering blocks and a base plate made from 6061–T6 billet aluminum. Three different anodized color options (Red, Blue, or Black) allow for a personalized look while maintaining the ultra high strength and durability you get from billet. They weigh in at approximately 5 lbs less than a comparable zinc carburetor. The new Ultra Double Pumper Carburetors have an enhanced fuel curve for optimum performance, with many more features such as aluminum construction| anodized billet aluminum metering blocks and base plate| 4 corner idle for precise idle control| mechanical secondaries for great performance| clear fuel level sight plugs for easy, no mess fuel level adjustments| Ford automatic transmission kickdown for use on popular Ford transmissions| four vacuum ports for all necessary vacuum accessories| and for the first time on a Double Pumper, factory pre–set electric choke for easy, fast cold start–ups. The clean, polished look coupled with Red, Blue, or Black metering blocks and throttle body will certainly set your ride apart whether you are at the show or track. Dont trust your performance to just anyone, Holley is the only Modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60s.
| Barrel | Four |
| Booster Type | Down Leg |
| Carburetor Type | 4150 |
| CFM | 750 |
| Choke | Manual |
| Emission | Without EGR |
| Finish | Shiny |
| Flange | Square Bore |
| Fuel Inlet | Dual |
| Fuel Type | Gasoline |
| Material | Zinc |
| Primary Main Jet | 70 |
| Primary Power Valve | 6.5 |
| Secondary Main Jet | 80 |
| Secondary Pump Nozzle Size | 31 |
| Secondary Type | Mechanical |
| Supercharged Application | No |
| Throttle Bore | 1.688 in. |
| Type | Automotive |
| Usage | Street/Strip |
| Vacuum Port Quantity | 1 timed (spark)| 1 full| 1 PCV |
| WARNING CA Proposition 65 | Yes |
| WARNING CA Proposition 65 Message | WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Holley
All Holley Marine Carburetors are designed to meet Coast Guard specifications. A marine Carburetors fuel metering system is calibrated to compensate for unique engine loads found on boats. The...
Holley
The Street HP uses the best features from Holley's race Bred 4150 HP carbs, but tamed for street and light competition use. The contoured main body from the 4150 HP has a tumble polished shiny finish...
Holley
Holley Double Pumper(R) carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors...
Holley
Holley Double Pumper(R) carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors...
Holley
The Street HP uses the best features from Holley's race Bred 4150 HP carbs, but tamed for street and light competition use. The contoured main body from the 4150 HP has a tumble polished shiny finish...
