35% off SpeedMaster

A brief update on the SB speedmaster rpm copies I had here in the shop.
A little backround.......

Someone brought a nearly completed, fresh 360 to a friend of mines shop...... to have it finished up and dynoed.
He’s not totally “fluent” in Mopars and I got a call about what the heck that thing would use for plugs.
I gave him a number, and he was like..... nooo nooo, these are the huge plugs like an old ford.
I had him tell me where the heat crossover in the head went.
As I suspected, it went into water..... and a search of the casting number revealed they were indeed the industrial heads with small ports and valves.
Calls the customer with a few options, the decision is made to get some SM heads.
I checked them over, all seemed fine.

The motor had arrived with the steel PRW rockers installed, it all fit fine with the OE heads.

The springs that came on the SM heads are only 1.440 diameter, and the valve tip stands well proud of the retainer.
But apparently ...... the rockers won’t clear the retainers as they are.
The underside of the rocker contacts the top outer edge of the retainer.

I gave him an old Crane gold rocker to try as a test piece to see if it cleared or not.

I’ll update once a solution is arrived at.