Oil Pump Porting How-to
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From: Arlington, Tx
Oil Pump Porting How-to I put this document together detailing how to port and shim an LSx oil pump. I know there has been many threads on this, but not all of the right information in one place. Enjoy
Big thanks to Vettenuts for the excellent feedback and content contribution.
Please download and open locally:
Link to .PDF Document
Big thanks to Vettenuts for the excellent feedback and content contribution.
Please download and open locally:
Link to .PDF Document
Last edited by 405HP_Z06; Apr 26, 2008 at 02:36 PM.
This is an excellent summary regarding the porting of a factory oil pump. I was pleased to see that you referenced my write-up and pictures from a while back in this forum.
I've bought a new high volume Melling oil pump which I also plan to disassemble and port prior to installation when I build up my stroker engine. The Melling came in a couple of weeks ago and I was surprised to see that it is cast iron instead of an aluminum casting like the factory pump. However, I can see why they chose cast iron as it is more wear resistant.
Once again, my highest complements on the Adobe Acrobat Document on oil pump porting!
All my best,
Steve
I've bought a new high volume Melling oil pump which I also plan to disassemble and port prior to installation when I build up my stroker engine. The Melling came in a couple of weeks ago and I was surprised to see that it is cast iron instead of an aluminum casting like the factory pump. However, I can see why they chose cast iron as it is more wear resistant.
Once again, my highest complements on the Adobe Acrobat Document on oil pump porting!
All my best,
Steve
Thread Starter
TECH Addict
iTrader: (11)
Joined: Jun 2003
Posts: 2,215
Likes: 19
From: Arlington, Tx
I would suggest you start with an LS6 pump. The pre-LS6 pumps have a lower bypass pressure and would have to be shimmed more. They also have a smaller outlet port at the block mating surface.
This is an excellent summary regarding the porting of a factory oil pump. I was pleased to see that you referenced my write-up and pictures from a while back in this forum.
I've bought a new high volume Melling oil pump which I also plan to disassemble and port prior to installation when I build up my stroker engine. The Melling came in a couple of weeks ago and I was surprised to see that it is cast iron instead of an aluminum casting like the factory pump. However, I can see why they chose cast iron as it is more wear resistant.
Once again, my highest complements on the Adobe Acrobat Document on oil pump porting!
All my best,
Steve
I've bought a new high volume Melling oil pump which I also plan to disassemble and port prior to installation when I build up my stroker engine. The Melling came in a couple of weeks ago and I was surprised to see that it is cast iron instead of an aluminum casting like the factory pump. However, I can see why they chose cast iron as it is more wear resistant.
Once again, my highest complements on the Adobe Acrobat Document on oil pump porting!
All my best,
Steve
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