High Flow Oil Pumps

[dave1]

>> When at idle this gauge was bouncing around 10
>>AT about 55mph, it would go
>> up to about 15 or 20
>Thanks Robert! Assuming the gauge was accurate, the 20psi at speed is
>too low.

In the past, a trick I have used on Olds and Chevy engines when I needed to
get a little extra life out of them was to install a larger displacement
oil pump. When the engine wears its usually not the oil pump that causes
low oil pressure. The clearances get bigger allowing more oil to flow. That
causes the pressure to drop which increases wear making the clearances even
larger and so on till something breaks.

What I am wondering...

Is there a high performance oil pump avalable for the 455 and how much
trouble it to drop the pan and change the oil pump?

My experience has been that I get an extra 40+ thousand miles out of an
engine by keeping the pressure higher. Granted, its a small sample but in
all three cases I wore the rings out rather than throwing a rod or spinning
a bearing.

Just a thought...

Dave
73 Sequoia

 

[thomas g. warner]

You guys are going to think I am a shill for Jor Mondello but here goes. He
sells 10 different oil pump assembleys for the 455 engine. He has the
SP-756 heavy duty oil pump listed for the GMC motorhome for $109.

>

>
>trouble it to drop the pan and change the oil pump?
>
>My experience has been that I get an extra 40+ thousand miles out of an
>engine by keeping the pressure higher. Granted, its a small sample but in
>all three cases I wore the rings out rather than throwing a rod or spinning
>a bearing.
>
>Just a thought...
>
>Dave >>
>
>Dave -- I've never dropped the pan but it looks as if you can by jacking up
>the engine a bit. Someone else can tell us the facts on this. I found a
>couple of web sites when searching for "high volume oil pumps auto"
>QualCast Oil Pumps and Accessories
> and HREF="http://www.nitronic.com/research/te.oil.p.html">titan engineering oil
>pumps
>
>There are probably a lot more. You have a good idea here and it might allow
>some owners to get more miles out of their engines at a fairly reasonable
>cost.
>
>Emery Stora
>77 Kingsley
>Santa Fe, NM
>
>
Tom & Marg Warner
Vernon Center NY
1976 palmbeach
"The beautiful Mohawk Vally"