what oil pump and timing chain should i run?
12-31-2012, 03:37 PM
#41
From Jason @ LPE:
The GM# 17801830 pump, although listed as a high volume pump in the GMPP catalog is the exact same volume as the 12586665 LS1, LS2, LS6 etc. pumps. It is not a high volume pump. You buy one and it comes in a different box and includes the O-ring and you buy the other and it comes in a different box with no O-ring.
The 12612289 and the 12571885 are the same volume but it is the 12612289 that has a lower pressure relief spring (roughly 33 psi vs 43 psi initial relief pressure for the 12571885).
The 10296 and the SDPC ported version of the 10296 are going to flow roughly 18% more volume than the stock LS1, LS2, LS6, LQ4, LQ9 etc. pumps (17801830 & 12586665). The 10296 pump shouldn't need any porting and porting makes very little difference in the flow capability of these types of oil pumps (the casting quality and design of the OE pump and the Melling pump are fairly good).
If you have good hot idle oil pressure, you don't need the Melling 10296 or the GM high volume AFM (formerly known as DOD) pump. Most stock GM short block engines don’t need the higher volume pump. If you have low hot oil pressure on one of these engines, look for the problem/cause of the low oil pressure before trying to fix it with a bigger pump.
The Melling 10295 pump is the same volume as the stock LS1, LS2, LS6, LQ4, LQ9 etc. pumps (17801830 & 12586665) but it has a different pressure control valve spring that starts to relieve at a higher oil pressure. This is why the Melling 10295 pump can improve low rpm/idle oil pressure over the stock pump. It also has some other design changes that should be better from a durability and leakage standpoint (face plate design etc.).
As a low cost way to try and improve idle oil pressure on the stock pump you can replace the stock pressure spring with a heavier spring or shim the stock spring. This only helps because the initial cracking pressure on the stock pump is fairly low (around 15 psi or so).
If you have low oil pressure when hot, then you probably need one of the two high volume pumps (GM or Melling). How much more volume you need depends on your engine build (clearances etc.), the oil temperatures, added restrictions (oil cooler and lines), etc.
The GM# 17801830 pump, although listed as a high volume pump in the GMPP catalog is the exact same volume as the 12586665 LS1, LS2, LS6 etc. pumps. It is not a high volume pump. You buy one and it comes in a different box and includes the O-ring and you buy the other and it comes in a different box with no O-ring.
The 12612289 and the 12571885 are the same volume but it is the 12612289 that has a lower pressure relief spring (roughly 33 psi vs 43 psi initial relief pressure for the 12571885).
The 10296 and the SDPC ported version of the 10296 are going to flow roughly 18% more volume than the stock LS1, LS2, LS6, LQ4, LQ9 etc. pumps (17801830 & 12586665). The 10296 pump shouldn't need any porting and porting makes very little difference in the flow capability of these types of oil pumps (the casting quality and design of the OE pump and the Melling pump are fairly good).
If you have good hot idle oil pressure, you don't need the Melling 10296 or the GM high volume AFM (formerly known as DOD) pump. Most stock GM short block engines don’t need the higher volume pump. If you have low hot oil pressure on one of these engines, look for the problem/cause of the low oil pressure before trying to fix it with a bigger pump.
The Melling 10295 pump is the same volume as the stock LS1, LS2, LS6, LQ4, LQ9 etc. pumps (17801830 & 12586665) but it has a different pressure control valve spring that starts to relieve at a higher oil pressure. This is why the Melling 10295 pump can improve low rpm/idle oil pressure over the stock pump. It also has some other design changes that should be better from a durability and leakage standpoint (face plate design etc.).
As a low cost way to try and improve idle oil pressure on the stock pump you can replace the stock pressure spring with a heavier spring or shim the stock spring. This only helps because the initial cracking pressure on the stock pump is fairly low (around 15 psi or so).
If you have low oil pressure when hot, then you probably need one of the two high volume pumps (GM or Melling). How much more volume you need depends on your engine build (clearances etc.), the oil temperatures, added restrictions (oil cooler and lines), etc.
12-31-2012, 04:11 PM
#42
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So far from what has been discussed here the best options would be:
LS6 oil pump with LS2 timing set
or
SLP oil pump with JP Performance double roller with torrington bearing
LS6 oil pump with LS2 timing set
or
SLP oil pump with JP Performance double roller with torrington bearing
12-31-2012, 04:50 PM
#44
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now what about timing cover fitment with the slp oil pump and JP double roller timing set, im guessing ls6 pump and ls2 timing set are set up like stock far as fitment
01-23-2013, 07:50 PM
#46
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01-25-2013, 02:33 PM
#49
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52 pages worth of sales... Mine included. LS2 HD chain with billet gears. The crank gear is a 2 piece so it's adjustable. Came with a torrington bearing as well, which was a plus.
https://ls1tech.com/forums/parts-cla...new-gm-52.html
Personally I'm running a ported LS6 from TSP and couldn't be happier.
https://ls1tech.com/forums/parts-cla...new-gm-52.html
Personally I'm running a ported LS6 from TSP and couldn't be happier.
