Oil Pump
Moderator
Joined: Jun 1999
Posts: 7,117
Likes: 51
From: Dove Mountain Arizona
Re: Oil Pump (93Zeus)
The concensus here is that you do not need a HV pump. I've got one and left it HV, but you do get an extra spring with them which makes it a hi pressure only, not hi pressure and hi volume. Lotsa extra wear on the dist. bushings with hi vol. You also need a bigger oil pan if you plan to rev it alot with the HV. When I do my engine swap, I'll change the spring to hi press. only.
Le Mans Master
Joined: Mar 1999
Posts: 6,744
Likes: 1
From: delmont pa
Cruise-In I Veteran
Cruise-In II Veteran
Re: Oil Pump (MasterDave)
the spring has nothing to do with pump volume,only the pressure. the volume is determined by the length of the gears and you can not change that without going to a different pump. :chevy
Safety Car
Joined: Apr 1999
Posts: 4,623
Likes: 2
From: Ohio
Re: Oil Pump (93Zeus)
Zeus, I dug long hard and deep on this one. The smart money says get the new style Melling adjustable (pressure) pump. It's got a 3/4" bolt on pickup tube. It's a 10% over volume pump, has steel gears (unlike most of the others that have powdered metal gears.) The other benefits include a stronger, stiffer, more accurate shaft to the dist.
