Are all high volume oil pumps ported, also any input on installing an oil pump with a double row timing chain.I believe I will have to shim the pump. Have you done this and what did you use?
Thanx Brian

 

no one has a double row timing chain, no opinions or info no knowledge about high volume oil pump

 

The double roller kit that I bought came with spacers for the oil pump.

Why are you looking at a high volume pump? Generally a good quality stock replacement is plenty.

 

your timing chain should come with shims.
not all oil pumps are ported or high volume.

 

damn **** crashed again.

 

do all timing sets come with shims? i'm going to be facing the same question here in a couple weeks. I got my ported LS6 pump from SLP and have a Crane double timing chain.

 

it should, all double roller chains have a clearence issue from the oil pump.
i have my roll master for the 6.0 build and it came with shims.

 

I hope to get mine today and Iwill let y'all know if it has shims

 

Besides the info I get on here I also have two books.

1) How to Build Hi Perf LS1/LS6 V8s by Will Handzel from Cartech
2) Chevy LS1/LS6 Performance by Christopher Endres from HPBOOKS

Both recommend increasing the volume of the oil, one says that these engines have an oil supply problem that leads directly to starved bearings. Also I've read that the early oil pumps fail for no reason and without warning. So I'm just trying to be safe. It's probably overkill but WTF

 

The only thing I'd worry about (and I'm not sure how much of an issue this is) is a high volume pump sucking the pan dry. I asked a lot of questions when I put my engine together and the consensus seemed to be to just get a stock replacement. High pressure and high volume were either for extreme applications or to act as a band-aid for another problem. I ended up going with a Melling stock replacement.