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Generation III Internal Engine 1997-2006 LS1 | LS6
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GM high volume oil pump or Melling ?

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Old Sep 15, 2006 | 01:14 PM
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Default GM high volume oil pump or Melling ?
Just wondering which I should go with if given the choice? Can I use an after market timing chain with either?
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Old Sep 15, 2006 | 01:52 PM
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mellings here with rollmaster double non adj.
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Old Sep 15, 2006 | 06:47 PM
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I am running the melling with rollmaster dual roller adjustable. I haven't fired the engine yet hopefully next week.
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Old Sep 15, 2006 | 11:16 PM
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Originally Posted by BlkHwk
I am running the melling with rollmaster dual roller adjustable. I haven't fired the engine yet hopefully next week.
thats what im running and i love it.
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Old Sep 15, 2006 | 11:37 PM
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Originally Posted by csmc711
Just wondering which I should go with if given the choice? Can I use an after market timing chain with either?
If you run the dual roller you may have to do some clearancing on the timing cover. I know I did on mine. I am pretty sure you have to on the LS6 pumps also but never ran it with the LS6 pump. GL
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Old Sep 16, 2006 | 08:32 AM
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havent heard of clearing the cover when using an ls6 pump
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Old Sep 16, 2006 | 09:04 AM
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You will be fine. Im running the same setup with my double roller and a ATI balancer kit for my vortech.
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Old Sep 17, 2006 | 07:34 PM
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What about the Lingenfelter pumps? Seems I am coming across them now in my searches also?
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Old Sep 18, 2006 | 08:43 AM
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I used a TSP ported one with a Rollermaster Double roller. It works great I get about 60psi @ iddle when the engine is warmed up.
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Old Sep 18, 2006 | 10:22 AM
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Melling did not do for me. Going with a ported ls6.
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Old Sep 18, 2006 | 10:48 AM
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Melling seems like the #1 unit to have, what did it not do for you n2o ??
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Old Sep 18, 2006 | 12:02 PM
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damn 60 psi at idle so what do u have at wot?
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Old Sep 18, 2006 | 01:20 PM
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Make enough pressure. Then it eventually dropped to zero. Had another car here nearby that had one. It was a turbo car, and it was ugly.
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Old Sep 18, 2006 | 01:50 PM
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Was it a stuck pressure relief valve ?
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Old Sep 18, 2006 | 02:22 PM
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ported LS6 and LS2 chain, proven, bulletproof and cheap. (its about $200 for the pump and chain)
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Old Sep 18, 2006 | 04:35 PM
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Originally Posted by MiaSSmaro98
damn 60 psi at idle so what do u have at wot?
I'll run a Log tonite to be specific but is up there at wot.
Last edited by Killer_Bluebird; Sep 20, 2006 at 02:13 AM.
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Old Sep 18, 2006 | 08:46 PM
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Really n20? Thats a bit odd, going to -0- ?? I would not think it would go to 0 unless you had something like 3" bearing clearances....hmmmm???

Anyone know what the Lingenfelter pumps are? Are they ported LS6 pumps?
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Old Sep 20, 2006 | 02:12 AM
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Originally Posted by MiaSSmaro98
damn 60 psi at idle so what do u have at wot?
OK here are my numbers with the TSP Ported Oil Pump. I was mistaken. Pressure is 60# cold @ iddle when the engine is fully Hot it drops between 45-50# @ idle. Cruising around at 2k rpm it goes back to 60# at wot it is about 75# at ~5,500-6k rpms.
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Old Sep 20, 2006 | 08:00 AM
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awesome i order mines already
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