What drives the oil pump?

[Canada]

On the psuhrod verison there is the distributer stub that drives the oil pump....but what about on the DOHC? Is there a "blank" camshaft that runs in the typical spot to drive the distributor stub to drive th oil pump?

I've recently had the pan off my DOHC.......I see its on the back (or drivers side) of the motor like the pushrods......

[jmgtp]

Yes, the dohc has a dummy shaft (intermediate shaft) where the pushrods have the camshaft. The distributor(less) cap is still there, just as in the pushrods.
The intermediate shaft serves 2 purposes:
It drives the oil pump and secondly it has the drive pulley for the Tbelt on the other end. It is operated the same as the camshaft in a pushrod, that is, it is driven by a timing chain.

[Canada]

Thats what I thought..........GM really cheaped out on this motor.........just slapped a set of DOHC heads on, gave it a timing belt, and moved the accessories around.

Did they even change the oil system? Or did they just make the DOHC heads use pushrod oiling?

[brian89gp]

Oiling system is different as is the pump.

[Lyle's GTP]

The only thing that GM "cheaped" out on was the intermediate shaft. If you compare the DOHC block to the rest of the 60 degree family. It is far superior, in design.

Lyle