The Melling M-77G is a standard-volume, standard-pressure replacement oil pump for the big-block Chevy Gen IV. It is built to Melling's OE-grade standards for consistent oil delivery and durability in street and performance use.
Specifications:
- Volume / Pressure: Standard Volume / Standard Pressure
- Manufactured pressure: approximately 70 psi relief
- Gear/rotor: billet steel spur gears
- Housing: cast iron
- Engine / application: big-block Chevy Gen IV
- Part number: M-77G
FAQ
What engine does the Melling M-77G oil pump fit?
The M-77G fits the big-block Chevy Gen IV. Confirm your engine's oil pump style before ordering.
Is the M-77G a standard or high-volume oil pump?
Melling classifies the M-77G as standard volume / standard pressure.
Does this pump include a pickup screen or tube?
No. The M-77G is supplied as an oil pump; the pickup screen or tube is sold separately. Maintain Melling's recommended 3/8 inch to 1/2 inch screen-to-pan clearance on installation.

