The nature of a vacuum pump is to remove air, blow-by gasses and other contaminants from the crankcase of an engine. Crankcase vacuum will increase horsepower by allowing the use of low-tension compression and oil control rings. In which the use of reduces frictional horsepower losses, blow-by, intake charge contamination and aids in detonation prevention. MorosoÄôs Äúpurpose builtÄù racing pumps offer all these advantages and more. Whether you have a normally aspirated Small Block or a nitrous equipped Pro-Mod, one of MorosoÄôs vacuum pump offerings with all the needed accessories has you covered. These pumps will suit nearly any engine combination and requirement.
- "Enhanced Design" pulls 13.9% more vacuum
- Can be used efficiently on wet or dry-sump engines
- Achieves greater vacuum sooner, virtually maintenance free
- 4-Vane design weighs less than "original" style pumps
- Designed with maintenance-free precision sealed roller bearings
- 4.375" O.D. body, 5.050" from back of pump to pulley mounting flange
| PART NO. | AVAILABLE OPTION |
| 97642 | Vacuum Pump Vane Kit, Enhanced |
| PART NO. | MOUNTING BRACKETS |
| 63914* | Mounting Bracket, Big Block Chrysler, Driver/Passenger side of waterpump housing |
| 63917 | Mounting Bracket, All Engines, with a motorplate or Small and Big Block Chevy, Driver/passenger cylinder heads |
| 63921* | Mounting Bracket, Ford 4.6/5.4, OEM, Power Steering Pump Location |
| 63924* | Mounting Bracket, GM LS, Driver/passenger cylinder heads |
| *63918 | Adapter Ring. Allows the use of a Moroso "Original" Style Vacuum Pump with No. 63917 Mounting Bracket |
| PART NO. | REPLACEMENT PARTS |
| 97641 | Replacement Fittings, -12AN |
| 97181 | Shaft & Hub Assembly, for Nos. 22642, 22644, 22840, 22842 |
