Im ready to start puting on my main caps and in this book i got says there shoudl be a ball bearing that goes in the block under the last main cap where the oil pump goes. Is it nessacary to have this in cause i can't find mine?

 

According to the HP book rebuilding the LT1; if you leave it out. you will loose oil pressure and have an oil leak at the rear cap...

 

where can i get one ?

 

Probably from Jason Cromer or Dal, a search on either (both) of those will get you the contact info. Or perhaps someone will chime in...

 

It's a .473" steel ball. You can get one from GM or from a ball bearing manufacturer (Yellow Pages?).

 

Thanks for the help.

 

It could be a 'cup' type plug (similar to freeze plug), of the correct dia., as well.

 

Is this the bearing that segregates filtered versus non-filtered oil?

 

Yes! It plugs the connecting passage of the unfiltered to filtered circuits.