Halloran

iTrader: (7)

I know there's a thread somewhere on the forums regarding the ported oil pump and double roller timing chain install mods. If anyone can find it for me or get me a link that would be great.

Thanks!

shoemike

iTrader: (25)

http://ls1howto.com/index.php?article=4

Halloran

iTrader: (7)

Well the above thread shows how to do the oil pump install with a single timing chain. I have a double roller and I know there is some kind of modification that has to be done in order to get everything to fit together. Let me know if anyone has any information on this.

Thanks again

PREDATOR-Z

It is the same except you have to use the gears supplied and the shims before pump install to clear pump.

bayer-z28

iTrader: (14)

Don't forget the new O THICKER ring on the pump.. GM 12557752

cowboysfan

I ported my oil pump myself. just wondering why the thicker o-ring? I didn't port that area since it didn't make sense. just wondering .02

Halloran

iTrader: (7)

Awesome thanks! And what about the thicker O ring? Is that a requirement or can I just use the O-ring that comes off my stock oil pump. I mean I'd replace the O-ring anways but is the thicker one specific to the ported oil pumps?

PREDATOR-Z

No, just a new one. Just give GM that part number.

bayer-z28

iTrader: (14)

The new ring is only a couple bux for insurance sakes.. The way I see it.. It's like replacing rod bolts while the engine is apart... You're in there..

If you find you have a ticking problem due to oil system aeration, would you want to rip the pump out again?

The new ring isn't much thicker, you'd have to compare them at it to see. But it made a difference on -=Mod=-'s car.