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Old Jul 1, 2011 | 08:04 AM
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Default oil pump part numbers?

pn#12556436
how can I tell if I have the 01 plus pump cause I've heard all the ls pumps have this same pn#
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Old Jul 1, 2011 | 08:56 AM
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Might double check your part#.. Im showing the oldest part# to be 12556434... That was the # back in 99'... They have since changed to 12586665, which is all that is used from GM on the 4.8, 5.3 exc LC9 & LS4, 6.0 exc L76, 5.7(LS1 & LS6) & 6.2's exc L99 & L92

Last edited by MM98; Jul 1, 2011 at 09:01 AM.
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Old Jul 1, 2011 | 08:51 PM
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weirddd on the ls1 how to write up he is showing a brand new ls6 pump with the same pn as mine
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Old Jul 1, 2011 | 08:54 PM
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also found a thread a guy stating the pn you just listed on the box but the pn I listed is actually on the pump.... I'm confused
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Old Jul 1, 2011 | 09:06 PM
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Originally Posted by TermnEatr
weirddd on the ls1 how to write up he is showing a brand new ls6 pump with the same pn as mine
Those articles were written years ago, so the part number might be outdated. Are you looking to replace your oil pump? If so, I've been hearing nothing but good things about the Melling 10296.
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Old Jul 1, 2011 | 09:21 PM
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Ditto on the current LS6 part number of 12586665.

I have a Melling 10296 and it works well, but it would requires clearancing work whenever it is used in conjunction with a double-roller chain.
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Old Jul 1, 2011 | 09:24 PM
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I'm running the stock timing chain I have good faith in it and haven't heard really any bad things of it. So the mellingwill clear fine with it correct?
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Old Jul 1, 2011 | 09:44 PM
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Originally Posted by TermnEatr
I'm running the stock timing chain I have good faith in it and haven't heard really any bad things of it. So the mellingwill clear fine with it correct?
Yep, cheapest place to purchase a Melling Oil Pump is through New Era Performance Parts for 104.99 plus 10.95 shipping. Everywhere else it's 139.99-159.99 plus shipping.

http://www.neweraperformanceparts.co...mart&Itemid=54

Click on part number 10296.
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Old Jul 1, 2011 | 09:47 PM
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Originally Posted by TermnEatr
I'm running the stock timing chain I have good faith in it and haven't heard really any bad things of it. So the mellingwill clear fine with it correct?
You should consider an LS2 chain - not all that expensive and stouter than LS1.
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Old Jul 2, 2011 | 02:49 PM
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where can I pick up a ls2 chain.... Also I've never installed a timing chain either is it hard what's involed?
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Old Jul 2, 2011 | 02:51 PM
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also what's the diff between the two mellings pn m295 and m296
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Old Jul 2, 2011 | 08:46 PM
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Originally Posted by TermnEatr
where can I pick up a ls2 chain.... Also I've never installed a timing chain either is it hard what's involed?
Originally Posted by TermnEatr
also what's the diff between the two mellings pn m295 and m296
LS2 Timing Chain can be had at Texas Speed or Thunder Racing. Once the oil pump is off the timing chain chane is not difficult.

A melling M295 is the OE Replacement as opposed to the high performance 10296. The 10296 is a high volume pump and comes with two springs to allow the selection of standard pressure or high pressure (+10 psi). An M296 is a Melling pump for Chrysler engines.
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Old Jul 2, 2011 | 08:57 PM
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at what point would be the need for plus 10 psi of oil pressure over the the regular melling?
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Old Jul 2, 2011 | 09:17 PM
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Originally Posted by TermnEatr
at what point would be the need for plus 10 psi of oil pressure over the the regular melling?
I do not know - perhaps it helps if you are running an external oil cooler; or perhaps there instances where the higher pressure is beneficial with certain bearing clearances. I installed my with standard pressure spring. I wanted the added volume which comes with the 10296.
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Old Jul 3, 2011 | 04:58 PM
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ok thanks man
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Old Jul 6, 2011 | 06:47 PM
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Originally Posted by Darkman
I do not know - perhaps it helps if you are running an external oil cooler; or perhaps there instances where the higher pressure is beneficial with certain bearing clearances. I installed my with standard pressure spring. I wanted the added volume which comes with the 10296.
wtf i ordered the oil pump and checked the option for the m296 and they sent me the 10295 pump!
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Old Jul 6, 2011 | 07:11 PM
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Originally Posted by TermnEatr
wtf i ordered the oil pump and checked the option for the m296 and they sent me the 10295 pump!
Since the "m296 option" would involve a pump for a Chrysler engine (see above) I assume you mean the 10296 option. The 10295 is a standard volume, high pressure pump.
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Old Jul 7, 2011 | 09:41 AM
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it says m296 for ls1 and ls2 engines I figured since they had a m295 and a m296 it was the 10296 and the other the 10295 they sent me.
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Old Jul 7, 2011 | 10:25 AM
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just talked to new era and they said that is the check off for the 10296 and there computers must have glitched cause it is not showing the checked boxes on the invoices he said it's actually 25 dollars more than the 10295 and to send it back and he will cover shipping I just gotta pay the diff
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Old Jul 9, 2011 | 03:09 AM
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Oh man, sorry about that. I feel partly to blame since I linked you to it.
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