Hi I’ve searched but only found a vague answer. Question will the roller rockers Yellaterra type work under standard rocker covers. Mine came with some badly built alloy shims. I am going to use alloy rocker covers muscle ones from South Africa. Thanks

Have you seen these guys
 
http://jrcast.com/?page_id=114
 
 

I’ve got alloy cast ones already. Muscle covers from South Africa.

The pro street rockers foul on the standard covers, but work fine under the burton alloy covers.
 

If what I’ve read and on my car are true ,using roller rockers is best to use the alloy rocker covers.
Lots out there Burton’s ,Johnscapris ,Seton motors.

I’ve got these covers. I can turn the motor by hand whilst their bolted down. They show more clearance than the stock pressed metal. Just want to get the motor running as these are off another motor I’m building.

Try original cover with double gaskets this should work.

GTV6
Have you seen these guys
 
http://jrcast.com/?page_id=114
 
 

Don't buy these

Yella Terra rollers foul on factory rocker covers.  I have seen spacers cut out of 5mm alloy plate most likely traced from a gasket.  I have had a couple of these and allow clearance.  IIRC the gurus like Seton and Nelson back in the day used Crane SBC very low profile ones which fitted under stock covers

spud15

GTV6
Have you seen these guys
 
http://jrcast.com/?page_id=114
 
 

Don't buy these

Spud? any problems with the crossflow versions?