T&D roller rocker question

[94z286speed]

Is anyone running these? I have read you need to open up the pushrod hole to run the 1.65 ratio rocker setup. Any help would be appreciated.

 

[turbofabricator]

The only issue with T&D rockers is that the rocker pedistals MUST.....MUST be machined for side clearance. Champion should have done this already, but check to see if yours are already done. All being equal, the T&D rockers also require a .100" shorter push rod, too. I have not needed to enlarge the push rod hole. And usually install bushings in them when going to the 1200 port size. Might have to elongate them if your geometry is off. (incorrect push rod length)

 

[ek02]

I have run T&D 1.65 rockers with 3/8" push rods with iron heads and did not have any clearance issues.