DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    M55 VS M55HV pump?
Go
New
Find
Notify
Tools
Reply
  
M55 VS M55HV pump?
 Login/Join
 
DRR Pro
Picture of Bruce Williams
posted
Is there any difference in gear/body size between the M55 and M55HV pump, or is it just a stronger relief spring?

I have been all over the Melling web site and all I have found is the difference in the springs.

I would "think" the HV pump would have a larger pump cavity so as to provide the additional 25% oil volume they advertise.


Bruce Lee Cool

Experience is what you get when you don't get what you want.
 
Posts: 2105 | Location: Chandler Arizona | Registered: August 11, 2005Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
The body and gears of the hv pump are 1/4 inch longer than the non hv pump. That’s is what creates the extra volume.
 
Posts: 547 | Location: Going to or returning from the chipmine. | Registered: July 01, 2011Reply With QuoteReport This Post
DRR S/Pro
Picture of David Covey
posted Hide Post
Some interesting stuff. I have been watching his videos since he started.
He has just posted a bunch of videos on oil and oil flow, in his last one he made comments about the melling pumps for small and big chevys. Gerold Brand

Dave


"It is usually futile to try to talk facts and analysis to people who are enjoying a sense of moral superiority in their ignorance." -Thomas Sowell
 
Posts: 3472 | Location: American By Birth Texan By The Grace Of God  | Registered: April 29, 2004Reply With QuoteReport This Post
DRR Pro
Picture of Goob
posted Hide Post
HV pumps also have a 3/4" inlet.


"Despite the high cost of living, it remains popular."
Dave Cook
N375
 
Posts: 2175 | Location: Indy | Registered: November 21, 2008Reply With QuoteReport This Post
  Powered by Social Strata  
 

DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    M55 VS M55HV pump?

© DragRaceResults.com 2026