Champion Shaft rockers with duromax help

[Shepard]

Originally Posted by slonomo

You know, as I think about it, I had issues with my 440/460 when I changed to the 1.3 rockers. It had starting issues and couldn't get it to say running even with ether. Changed back to the cheapie stock units and Vroooom!!! Wonder what these aftermarket parts do to the valvetrain that causes issues?

I have 3 460's - 2 wedge heads and 1 hemi. All 3 have 1.3 to 1 roller rocker arms, both of the wedge heads required shimming the rocker assembly and longer push rods to correct the rocker arm geometry. The hemi only needed longer push rods. I use Gage Aluminum rockers in one and NR steel rockers in the hemi and other wedge head and none were drop in or bolt on parts.
If the rocker arm angles are not correct it will eat the valve guides out in short order. It also ensures the valves are opening to there max lift.

[slonomo]

Originally Posted by Shepard

I have 3 460's - 2 wedge heads and 1 hemi. All 3 have 1.3 to 1 roller rocker arms, both of the wedge heads required shimming the rocker assembly and longer push rods to correct the rocker arm geometry. The hemi only needed longer push rods. I use Gage Aluminum rockers in one and NR steel rockers in the hemi and other wedge head and none were drop in or bolt on parts.
If the rocker arm angles are not correct it will eat the valve guides out in short order. It also ensures the valves are opening to there max lift.

Yeah I'm sure my geometry was off. I used the cut to fit chromoly pushrods and did the best I could. Even used a checker tool. Hindsight....