Pontiac OHC Oil Pump & Accessory Drive Rebuild Kits and Parts

Primatech Motorsports is now offering several options for rebuilding your Pontiac OHC Oil Pump / Accessory Drive assembly. All prices shown are outright with no exchange required.

Complete Rebuild Kit

Our complete rebuild kit has all the parts you need to replace every wear part in the assembly, along with a new set of gaskets.

• New oil pump gears
• Front needle roller bearing
• Main shaft seal
• Pressure regulator spring
• Oil filter bypass spring
• Oil filter bypass disc
• Distributor gear roll pin
• Pressure regulator plug gasket
• Oil Pump plate gasket
• Accessory Drive housing to block gasket
• Distributor gasket
• Fuel Pump gasket

Refresh Kit

If your accessory drive assembly is in good condition, and you wish only to “revitalize” the seals and bearings, Primatech Motorsports also provides a refresh kit, which includes:

• Front needle roller bearing
• Main shaft seal
• Pressure regulator plug gasket
• Oil Pump plate gasket
• Accessory Drive housing to block gasket
• Distributor gasket
• Fuel Pump gasket

Spare Parts

If your housing or oil pump cover plate are excessively worn or damaged, contact Primatech for replacement parts. We carry both stock flat plates and deep high volume plates for use with high volume gear sets. We also offer pressure balanced end plates and housings:

Rebuilt Accessory Drives

Primatech Motorsports is also proud to offer completely rebuilt accessory drive assemblies. All pricing is outright with no exchange required. If you have an oil pump / accessory drive assembly in good condition, PMI will credit you $50.00 after we receive and inspect it.

Stock rebuilt

Each unit is completely disassembled; all parts are cleaned and inspected. PMI only rebuilds accessory drives with gear to housing clearances within factory specifications.

Rebuilding includes all new wear parts:

• Oil Pump Gears
• Pressure Regulator Spring
• Pressure Regulator Plug Gasket
• Pressure Relief Spring
• Pressure Relief Disc
• Distributor Gear Roll-Pin
• Oil Pump Plate Gasket
• Accessory Drive Housing to Block Gasket
• Distributor Gasket
• Fuel pump Gasket
• New gears installed.
• Gear clearance to pump plate is checked and adjusted.
• New seals and bearing installed
• Distributor shaft end-play checked and adjusted.

HP-1 High Performance rebuilt

PMI’s High Performance rebuild includes all of the stock rebuild components and attention to details. In addition, we add a bearing to the main shaft at the distributor gear and set the shaft end-play, improving the stability of both the main and distributor shafts, resulting in more stable ignition timing. We also radius the oil passage feed holes throughout the pump and remove all casting flash in the oil path.

HP-2 High Performance High Volume Rebuilt

25% more volume than the stock oil pump.  Because of the unique design of the Pontiac OHC lash adjuster oiling circuit, oil flow through the rod and crankshaft bearings can cause flow rate variations that can result in improper oil pressure in the lash adjuster circuit. A high volume oil pump can help maintain the proper pressures in all parts of the motor, even with excessive clearances in the bearings. Our high volume oil pumps are set to factory pressure settings.

HP-3 Racing Performance

In addition to higher volume pump gears and closer gear-to-housing clearances, PMI adds pressure balancing, drilled and lock-wired cover bolts, externally-adjustable pressure regulator and two auxiliary ports for direct command of the lash adjuster and camshaft oiling circuits. Hard Chromed and Polished shaft with two precision roller bearings and a roller thrust bearing are also standard.

Optional features

PMI Rebuilt oil pump / accessory drive assemblies are also offered with many options:

PMI also offers any combination of the following optional features:

(Pressure balancing provides smoother continuous oil flow with “feeder grooves” that bleed pressure across the pump gears, providing smoother operation and more constant pressure. This permits higher RPM operation and eliminates pump cavitation.)