I know a few different places offer ported LS1 oil pumps besides ARE, I think MTI and MMS do plus possibly others. I’m doing a cam swap and I’d like to change the oil pump too, so which one does everyone recommend? I was going to get the ARE, but maybe I’d be better off with a different pump? I think the MTI pump is cheaper?

 

And another question, when you buy these pumps, is there a core charge?

 

I got mine from ARE - there is no core charge.

 

ARE here ...

I saw a 20psi difference in oil pressure at hot idle

 

I got an ARE as well, but if I had it to do over, I'd go with MTI or Katech. Not sure what the MTI costs, but I think the Katech is around $125 or so. Back when I bought mine, I ended up paying $170 + $45 shipping.

Unfortunately, mine still reads at 18psi at hot idle during the summer.

[ January 11, 2002: Message edited by: Gary98Z ]</p>

 

ARE here as well. Not a significant PSI difference over my stocker, but I replaced as a maintenance item (along with putting in a Katech & Cloyes timing chain setup) during the cam swap (at 46k miles).

I paid $125 shipped for new, never installed from someone in the classifieds. <img src="gr_stretch.gif" border="0">

-Andrew

 

What are the benefits? Just higher oil pressure? I've never even hear of this mod. <img src="graemlins/gr_zzz.gif" border="0" alt="[boring]" />

<img src="gr_stretch.gif" border="0">

- Matt

 

Can't speak for the others, but the ARE works great.

 

[quote]Originally posted by Trans Am WS6 420:
<strong>What are the benefits? Just higher oil pressure? I've never even hear of this mod. <img src="graemlins/gr_zzz.gif" border="0" alt="[boring]" />

<img src="gr_stretch.gif" border="0">

- Matt</strong><hr></blockquote>

Many stock oil pumps have been known to take a CRAP! <img src="gr_sad.gif" border="0"> When your oil pump takes a crap, your engine takes a crap shortly there after... <img src="gr_images/icons/mad.gif" border="0"> Then you crap your pants when your realize you have blown your engine!!! DANG, that's alot of crap! <img src="gr_sad.gif" border="0"> <img src="gr_sad.gif" border="0"> <img src="gr_sad.gif" border="0"> LOL

Maybe it is a small percentage, and GM figures its cheaper to just replace the motor (if still under warranty). But if its your engine that blows, it will suck BIG TIME! Maybe you will get a new engine from GM, maybe you won't.

I know if i ever crack open the front of my engine to swap cams, I will put in an aftermarket oil pump like ARE's.

Makes me nervous just thinking about it... <img src="gr_sad.gif" border="0">

[ January 12, 2002: Message edited by: Red2000SS ]

[ January 12, 2002: Message edited by: Red2000SS ]</p>

 

MMS modified oil pump here. Very nice piece, great oil pressure !

 

Some people have only 18psi and some have +20 over stock. That is a lot of variance. Why???

 

I'd imagine that this would not increase PSI, but ensure that there are no casting flashes to break off and get into motor.

 

I have an ARE too.

 

Does anybody have the MTI pump? I have a friend that's trying to get an ARE pump and it seems to be impossibile! He's had it on order for over a month...

 

From what I understand the Katech and ARE pump are infact the same unit, sourced from Katech?

Cany anyone verify/refute this?

I don't know about the others (MTI/MMS - never seen them)


Chris