2sigmans

I'm getting ready to change my cam in my 2000 c5, and am trying to understand what makes the difference in the pick-up tube o-ring. There are two different numbers ( 12557075 & 12557752 ). Is it the pick-up tube or the pump body that makes the difference? I will be installing a stock ls6 pump on a ls1 engine. If the difference is the tube, then it seems to me you would stay with the ls1 o-ring (12557075). Any help would be appreciated.

SSDoubleK

iTrader: (100)

I just changed the pump,oring and timing chain in my 98. I do not have the part no. on hand,what I did when I did this upgrade is I asked for a 03 Corvette Oil pump and a 05 GTO Timing Chain,which is the LS2 ,these are the upgrade replacememts that are being used on our cars from the dealers. The LS2 Timing chain is a nice upgrade, and fits perfectly, cost is around 30.00. Hope this helps you.

ashade98

iTrader: (16)

I called the gm dealer and they don't even have the part # for the ls1 o-ring any more. Go with the ls6, they changed it for a reason!

2sigmans

That does seem right. I tried the ls1 # on gmparts direct, and it doesn't even come up. Looks like it has been superceded with the ls6 #. Thanks