618HAWK

iTrader: (361)

Well I am in the middle of a rebuild, just got a new cam retainer plate from Gm. They have now gone from the standard hex head bolts to counter sunk torxe screws.

Anyone have any idea why? I figured maybe for a thicker plate, but after comparing the 2 they are the same thickness.

vettenuts

iTrader: (4)

Yep, found the same thing. The first link contains some of your answers. The second link provides more information.

Link 1

Link 2

618HAWK

iTrader: (361)

Thank you makes sens know. On with the rebuild.

ls2 bait

iTrader: (11)

ut oh i torqued mine tyo 18 ft lbs........

vettenuts

iTrader: (4)

I think its pretty crappy GM swapped out this part and didn't provide a bulletin. I only found out by digging and because my background made me suspicious that the torque value would change.

eallanboggs

iTrader: (1)

If you get a cam sprocket with a Torrington bearing you don't have that wear problem on the retainer plate face.