Generation III Internal Engine 1997-2006 LS1 | LS6
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Old 04-25-2008, 05:50 AM
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what's the most economical upgrade for the shitty 1998 type?

gm part nmb: 17801830 "high volume ls pump" -$73
OR
gm part nmb: 12586665 "ls6 oil pump" -$102

is there that big of a difference between the 2?
Old 04-25-2008, 07:15 AM
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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
Old 04-25-2008, 07:39 AM
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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
Old 04-25-2008, 08:14 AM
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I also have the LS6 and I get 40 at warm idle typically and WOT have seen 77psi.
Old 04-25-2008, 08:26 AM
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I used the ls6 and had good pressure and no issues.
Old 04-25-2008, 10:28 AM
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melling is the best choice but it will cost alittle more...i'll spend the extra coin for piece of mind tho
Old 04-25-2008, 11:34 PM
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thanks guys
Old 04-26-2008, 12:00 AM
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Melling +142358




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