Hydraulic roller cam and stock rocker arms

I think it was 1963 the dragmaster dart rail won the winternationals.
They used a 383 with a 413 crank 63 style max wedge heads and a identical
set of rocker arms as Jim pictured. Not sure what type camshaft they used.
Since they were out of So.Cal, did your dad by chance help them? I was at
the then Palmdale International Raceway and your Dad tuning a friend of
mines 1958 Ply Golden Commander it was running pretty respectable times.

I don't think Pop (Bill LaRoy) ever had anything to do with the Dragmaster car but we did spend a lot of time at PIR in the 60's. When he started working in NASCAR in the 70's the guys he was working with began to call him 'Willie Tuner'.