The Stovebolt Site Forums The Shop Area Engine Shop 235 rocker arm assembly

Can someone please explain the difference between the 50-58 and the 59-62 rocker arm assembly for a 235 engine ?

Rusty, as far as I'm aware, they're all the same. There may be some minor differences in the rocker arm castings from year to year, but the geometry is the same I think. The shafts and other related parts are all the same.

Well, the 235 rocker assemblies are nearly the same from '54-62. On early '54s, two of the rocker arm mount bolts had studs sticking out above two rocker mount pedestals, to mount the older-style 2 bolt valve covers. '54 to '57 used a oil feed connector that had a loop that dumped excess oil back onto the head. '58-62 used a crimped style oil connector that did not vent excess oil, and may oil the rocker shafts a little better. The pedestals, shafts, rocker arms, locator springs and washers should be the same from '54-62. The assemblies were the same regardless of solid or hydraulic lifter useage.

There are a few places on the assemblies to check for wear. One is the rocker arm adjusting balls. They are available from Egge machine. The next is rocker arm faces where they ride on the valves. These can wear divots in the rocker face and on the valve stem tips. The third is where the rocker arms pivot on the shafts. The slop can cause erratic valve adjustment and noise.

New rocker arm assemblies are available from NAPA for 140 bucks. But you must change the rocker adjusting balls, as they are not hardened. Get the hardened ones from Egge Machine.

Good luck

Chip

Thanks guys
I appreciate the in debth info Chip. My local NAPA
wants $220 for the complete assembly.

You're welcome.

$220? What? Tell the knucklehead behind the counter that its $120-140 for BOTH sections. At least in my world.

Chip