The Melling M-77HV is a high-volume, standard-pressure replacement oil pump for the big-block Chevy (396, 427, 454) (1965-1976). It is built to Melling's OE-grade standards for consistent oil delivery and durability in street and performance use. It moves about 25% more oil than a stock-volume pump to feed higher oil demand from performance bearings, lifters, and clearances.
Specifications:
- Volume / Pressure: High Volume / Standard Pressure
- Manufactured volume: 25% higher than stock
- Manufactured pressure: approximately 70 psi relief
- Pressure spring options: optional 52 psi spring available
- Gear/rotor: billet steel spur gears
- Housing: cast iron
- Engine / application: big-block Chevy (396, 427, 454), 1965-1976
- Part number: M-77HV
FAQ
What engine does the Melling M-77HV oil pump fit?
The M-77HV fits the big-block Chevy (396, 427, 454) (1965-1976). Confirm your engine's oil pump style before ordering.
Is the M-77HV a standard or high-volume oil pump?
Melling classifies the M-77HV as high volume / standard pressure. The high-volume design moves about 25% more oil than a stock-volume pump.
Does this pump include a pickup screen or tube?
No. The M-77HV 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.
What is the difference between standard-volume and high-volume pumps?
A standard-volume pump matches factory oil flow, while a high-volume pump delivers more oil per revolution to support added bearing clearance, remote coolers, or high-rpm use.
