From the Edelbrock Cylinder Head Installation Manual,
Pushrods compatible with adjustable rocker arm assembly stock length
440 c.i.d.- 9.125” hydraulic flat tappet, 9.250” solid flat tappet
So, if you are having length issues, adjustable length check pushrod may be required to sort things out.
On my 440, I was able to use Factory HD Stamped Steel Rockers. Not Ideal, but cheap and they worked.
When I mounted the rocker arms/shafts, torqued them to spec, fired it up, there was a problem. The lifters hadn't pumped up. Had to loosen the shafts, run the engine a bit, then re torque to spec. That was 12-years ago, the installation that is.
