CHAMRA1

Hi Guys .

I have a problem with my LS1 Yella Terra Platinum Rockers Part # 6640 ?
Don't like the fact they are to wide and hit everywhere on Rocker covers .
And the side of the Head (Brand New AFR 225)

Also Towards the intake side of the head .Even on my Higher GM Performance Valve covers .

Anyway I want to replace them with some other brand rocker .
Maybe T&D or Jessels or even Comp Cams shafts .

Problem is in order to fit the YellaTerra Platinums I've had to drill and tap the standard 8mm Rocker bosses to the bigger 7/16" bolts that the Platinums use .

What are my options with regard to finding other brand rockers that take a 7/16" Stud/ Bolt ? Instead of a 8mm ?

flatchat

That part number rocker MUST use the rocker cover spacer as per their cataloge.

CHAMRA1

I already have higer rocker covers . 2.5" tall .

Thye problem is they are to wide and the end where the adjuster is hits the side of my AFR Heads .

flatchat

The AFR heads have a higher and maybe thicker top section where the rocker cover seals i think . This maybe your problem with the wider rocker?