Quote:
Originally Posted by 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 )
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I suggest you do some reading on the subject. Even in the late '40's, cam technology was pretty crude compared to the early/mid-'50's. Winfield, Bertrand, Smith & Jones, Howard, Weber & Harmon Collins were the main players at this time.
I think you need to decide if you
REALLY want to keep it in this time period and, if so, stick with it.
In the late '40's, Navarro was experimenting with mushroom lifters (I believe from MOPAR's) which require some specialized machine work to the block. Very late '40's and early '50's, Isky and Weber had radius lifter cams, but rollers didn't come around until Chet Herbert started making them, but I don't recall any Herbert stuff for flatheads. He saw the light with OHV motors.