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LSX oil pans

 
Old 05-01-2008, 03:47 PM
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Originally Posted by 71buickfreak View Post
What about the LH8 oil pan? Any dimension for it?
Any GM part numbers for this pan? and this is a dumb question but I have not decided on LS1 or an LS2. Won't most parts interchange between the two? IE: Motor mounts, oil pan etc etc?

Dan
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Old 05-02-2008, 04:54 AM
  #42  
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Is this going to fit F-body?

Name:  CTSVoilpan-1.jpg
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Old 05-02-2008, 09:34 AM
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Default Oil Pan Strength

I was considering using an aftermarket oil pan to help with clearance issues. However, I was concerned about the aftermarket pans not providing structural strength to the engine block. I would assume GM chose a cast pan for a reason. If the pan were not needed to provide structural strength to the block, GM would have made it out of stamped steel. Does anyone know if this assumption is correct? Do the aftermarket pans, such as the Canton P/N 13-274A or the Autokraft pans, provide structural support to the block?

Thanks.

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Old 05-02-2008, 09:50 AM
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I think that GM uses cast pans mainly for noise suppression. The blocks on the LSx engines use deep skirts and crossbolted main caps. I seriously doubt that the pan would take away enough rigidity to become an issue. This is just my opinion.

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Old 05-02-2008, 11:03 AM
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Any GM part numbers for the LH8 pan assembly?
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Old 05-02-2008, 06:30 PM
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I have 12614821 for the lh8 pan... $ 119 from my dealer.....

Rick
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Old 05-02-2008, 07:07 PM
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Originally Posted by flywheel View Post
I have 12614821 for the lh8 pan... $ 119 from my dealer.....

Rick
Thanks, Rick.

I'm guessin that part number is just the pan and not the pick up tube and other parts needed? It shows up as $96 on GMPD.

Hmmm
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Old 05-03-2008, 08:07 PM
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Originally Posted by ls1xjs View Post
I was considering using an aftermarket oil pan to help with clearance issues. However, I was concerned about the aftermarket pans not providing structural strength to the engine block. I would assume GM chose a cast pan for a reason. If the pan were not needed to provide structural strength to the block, GM would have made it out of stamped steel. Does anyone know if this assumption is correct? Do the aftermarket pans, such as the Canton P/N 13-274A or the Autokraft pans, provide structural support to the block?

Thanks.

LS1 xjs
From what I have seen you are correct on this LS1 XJS. Have read in a number of places, quotes from GM engineering folks, that the pan is designed to be a stressed member of the engine assembly and is certainly an integral and critical component in the trans/block/front & rear cover setup. I recall that even the shop manual may mention this. ("Oil Pan Alignment and Torque Critical...")

It is an incredibly stiff pan. It would have been much cheaper to punch one out of sheet metal.

Even the pressed steel parts bolted into some of the pans - i.e. the F Body oil return tray, are heavy duty items, much thicker and stiffer than they need to be to simply return oil. Cast in ribs are solid too. All a result of the FEA modelling they do on designs these days to get maximum strength and stiffness from minimum metal, weight, and cost.
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Old 05-05-2008, 10:20 PM
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Default LH6 DoD Pan

I posted a question in the Gen IV section regarding the special oil pressure regulator installed in DoD/AFM 5.3 engines. Can I get a little help? Would truly appreciate it. I gotta wife who would love to hear her engine fire but this is a big stumbling block.
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Old 05-06-2008, 07:12 PM
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Originally Posted by AustinYukon View Post
Thanks, Rick.

I'm guessin that part number is just the pan and not the pick up tube and other parts needed? It shows up as $96 on GMPD.

Hmmm
It included tube and tray if I remember right. I havn't got one yet...

Rick
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Old 05-12-2008, 12:19 AM
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Originally Posted by accental View Post
Thanks Andrew. I guess I should have looked a little closer
any info what plug is there in it?
PN would be awesome.

I got Fbody, but since I'm going with GTO pan, I'll need that sucker.
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Old 05-15-2008, 10:52 PM
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so what are iour options for fbody guys, will the caddy pan work?
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Old 05-15-2008, 11:31 PM
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Originally Posted by chetmo View Post
so what are iour options for fbody guys, will the caddy pan work?
I know it will hang below the K-member about an inch, but I'm not sure about the front. It's deeper so it may or may not touch the k-member.
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Old 05-16-2008, 03:18 AM
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Originally Posted by LH6-DOD-54-GMC View Post
I posted a question in the Gen IV section regarding the special oil pressure regulator installed in DoD/AFM 5.3 engines. Can I get a little help? Would truly appreciate it. I gotta wife who would love to hear her engine fire but this is a big stumbling block.
Did you get an answer on this?

FYI - DOD pressure regulator in a GTO style pan for Holden DOD equipped motor (though DOD not used).

LSX oil pans-dod-pressure-regulator.jpg

It regulates pressure to the top end of the motor to 55-75 psi. (including cam and main bearings.)

Can only deduce that this is due to higher volume oil pump being fitted for DOD, and the pressure limits on the DOD valves when closed dictate regulation to 55-75psi, but need the increased flow when opening.

If you never get over 75psi, then no real issue....except for those frozen mornings....next winter.....

That is 3 pressure regs/reliefs in one engine...oil pump reg, DOD reg, filter bypass reg.

Trust this helps.
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Old 05-17-2008, 09:50 AM
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for b-body guy.............
I want to do LSX swap for my impala SS 1996
which is best ??
thanks for help
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Old 05-20-2008, 09:19 PM
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Someone needs to change the Cadillac CTS pan info. Mine measures 6 3/4" total height. The picture shows 5 1/2" which we all should realize is wrong.

Corrected picture is below.
Attached Thumbnails LSX oil pans-ctsvoilpan-1-corrected.jpg  

Last edited by JasonWW; 05-20-2008 at 09:26 PM.
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Old 05-26-2008, 10:16 AM
  #57  
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For the DoD it looks as if I'll just have to install the threaded oil pressure relief valve (nearly identical to the GTO above) into the truck pan at the location shown in the photo. A little machining of a flat surface, drilling and tapping and I should be good.
LSX oil pans-dod-pan-swap.jpg
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Old 05-28-2008, 03:52 AM
  #58  
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I used an F-body pan in my LH6 Volvo. I NEVBER even gave that valve a second look. Have had NO issues with too much oil pressure. I'm sure on a very cold morning it could be a problem. The OTHER thing you could do is lower the RPM vs. COLD engine temp when you reflash the ECM to limit the engine RPM until the oil warms up. {B5203} in EFIlive.
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Old 06-05-2008, 06:33 AM
  #59  
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Originally Posted by chetmo View Post
so what are iour options for fbody guys, will the caddy pan work?
The caddy pan works. The drain plug moves to the rear but you can access it, at least on my M6. I swapped the oil filter tube over from my f-body pan and can still use the "big" filter. You will need the CTS tube and dipstick for correct oil level readings.

diptick - 12584737
tube - 12584738
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Old 06-05-2008, 04:41 PM
  #60  
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Default Pan swap for an 04 5.3 Vortec

New to the Gen III motors. I'm putting one in an 89 Landcruiser and have clearance issues the pan. It's about 2 inches from the front diff. I need a shorter pan in the rear sump area and associated parts to make it all work.
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