Generation III Internal Engine - Oil Pump
04-25-2008, 06:50 AM
what's the most economical upgrade for the shitty 1998 type?
gm part nmb: 17801830 "high volume ls pump" -$73
gm part nmb: 12586665 "ls6 oil pump" -$102
is there that big of a difference between the 2?
04-25-2008, 08:15 AM
Well, IMHO, spend the $145 and get a Melling Oil Pump. I''m a big believer in doing things once. I just did a cam and spring swap. I had no issues with my old 98 pump, but since the cover was off, 70,000 miles was time to do the pump and chain.
At idle at temp. I get 40 psi and under load I am over 60 psi.
An extra $50 is worth peace of mind
04-25-2008, 08:39 AM
i have the ls6 and im getting great oil pressure with the vindicator cam...one of the biggest cams. if u only have 100 bucks it works great. but if u have more money to spend the best one u can get is usually the best way to go. that melling one sounds nice
04-25-2008, 09:14 AM
I also have the LS6 and I get 40 at warm idle typically and WOT have seen 77psi.
04-25-2008, 09:26 AM
I used the ls6 and had good pressure and no issues.
04-25-2008, 11:28 AM
melling is the best choice but it will cost alittle more...i'll spend the extra coin for piece of mind tho
04-26-2008, 12:34 AM
04-26-2008, 01:00 AM
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