Rollerlifters

[3W Hank]

I would not go Crower/Jesel key ways in this project or a true roller cam billet big bore.
This is not Bonneville, just fun old parts/tech ( that 'could' be able late 40's )
This is a baby stroked 3.75" crank, 21A rods, Weiand intake, Kurten distributor and fun to has a steel core 32 cam and home made rollers.
I think some used rollers back then, but I'm not shore.
Maybe just spherical grinded flat tappets in a key (?)
-Maybe some know ?

I can't say on flat tappet cam profile to a roller, but reversed in NHRA stock we has now almost roller cam on std flat tappet lifters ( Ok, tool steel and coated )