I searched a bunch of old threads about this and found conflicting information. So I wanted to post this up to provide some clarification for myself.

My motor is a 350TPI w/083 heads that have been opened up to 2.02/1.60 with screw in studs and guideplates.

I am installing a set of CompCam Magnum Roller Rockers which are self aligning. The opening for where the pushrod goes through the head is a slotted (rectangular shape w/rounded ends) opening, not a rounded/circle opening.

The pushrods I am using are CompCam specific for the 87-97 w/roller cam. They are hardened for use with guide plates also.

Based on this information do I need to use guideplates?

My thought is no because of the opening in the head being the rectangular shape. I am thinking using the guideplates will ultimately conflict with the movement of the pushrod which could lead to damage somewhere in the drivetrain (bent valve).

Please let me know if I correct with this assumption or not. Thanks!

 

Your self-aligning rockers aren't compatible with guide-plates or slotted heads anyway.

 

So you are saying I need to get non self aligning rockers and use the guide plates?

 

Or get rid of the guideplates somehow.

 

Based on the previous response is using my 083 heads w/self aligning rocker arms without the guideplates the way to go?

 

Yes. Self aligning = no guide plates

Non self aligning= need guide plates

 

Could self aligning rockers used with guide plates cause bent valves due to the interference the guide plates may cause?

 

Bent pushrods maybe.