OEM RB block, Comp roller cam & lifters, new Indy EZ-1 cylinder heads, Hughes 1.5 rockers, 3/8 push rods.
Because of the arc that the top of the push rod travels, from about half of the lift through max lift and back down to about half lift, all eight intake push rods rub the cylinder head behind intake mounting flange. Some more so than others, but all to some degree. In the valve closed position, the push rods are almost centered in the push rod holes. Other than removing the heads and material removal, is there any other solutions, such as going to Harland Sharp rockers? Is this a common problem with Indy heads? I can move the rockers side to side with shims to some extent, but what about in and out movement? Any way to decrease the travel arc?
Thanks, Brian
Without seeing exactly what you have, that sounds like a large amount of adjuster movement. How many threads are showing one the adjusters? And what does your geometry look like?
