Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Old Jun 22, 2011 | 08:54 AM
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I'm working on a 2000 ls1 out of a C5 I want to put in a 81 z28
I've got an oil pan off a 2000 5.3 truck engine i wanted to use on the ls1
After removing the C5 oil pan and oil pump pickup tube i wanted to test fit the 5.3 pan and it will not fit flush to the block
I think its hitting the windage trey but i'm not sure
This is my first ls engine rebuild and wanted to ask people who have done this before any info would be helpful Thanx
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Old Jun 22, 2011 | 09:10 AM
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Each oil pan has it's own particular windage tray, you would need one for a truck pan. That said, you will probably find that the truck pan will hang down past the crossmember more than you will like. A hummer H2 pan or F-body pan would work better.
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Old Jun 22, 2011 | 12:46 PM
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+1 on the tray.. try removing it for fittement. If you not going to wind the engine up into the higher RPM.. you might just do away with it. as it really only help once it is in the higher RPM range. but IMO, get the right one for the pan.

LS1Nova71 - do you mean H3 / LH8 pan or really the H2 one ??

Might also look at the CTS-V pan..
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Old Jun 22, 2011 | 03:03 PM
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Thanx for the info i've not tired to install the engine yet will the c5 pan fit without having to notch the crossmember? A friend gave me the truck pan and it looks alot like a gen I oil pan so i was thinking it might work well but if its going to hang to low that may suck
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Old Jun 22, 2011 | 05:30 PM
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If you use the BRP kit. it should be even or a bit lower than the lower edge of the X-Member. take a look at the BRP site for installation Step / page 3.. you can just see how much it will be below the x-member.

C5 pan has a very long lower sump, it most likely will come into contact with the X-Member. nogo there..!
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Old Jun 22, 2011 | 07:13 PM
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Modifing the truck pan for more clearance is not that hard
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Old Jun 22, 2011 | 09:52 PM
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Originally Posted by bczee

LS1Nova71 - do you mean H3 / LH8 pan or really the H2 one ??
Yeah, you're right, I meant H3.
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Old Jun 22, 2011 | 10:21 PM
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Don't waste you time or money on the lh8 pan. I used it on my Chevelle and regret it, it hangs way too low. It's one thing I wish I would have sprung for the mast or holley pan.
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Old Jun 23, 2011 | 08:41 AM
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Thanx for the info guys i'm going to test fit this weekend and see what it looks like
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