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Oil Pump Modification

Contributed by: Rod Linnett

Oil Pump Modification
This modification is extracted from Performance - American Style Install 7qt deep or side sump oil pan with baffles to resist oil frothing. The stock oil pump can be used if modified as follows.

Oil Pump Assembly

1.Check the gear clearance as illustrated.
2.The stock specification is 0.002" - 0.006" (gears above housing).
3.Machine housing to obtain 0.006" - 0.007" clearance.
4.Also install oil pressure relief spring (#321 1034) color coded yellow that gives 55- 70psi

Checking Gear/ Housing Clearance

corner corner