[rasilverbird]

Originally Posted by b-man

540233 is just a casting number for the cam blank.

It’s not a stamping, it’s cast into the cam blank.

540233 is also the part number of the #8 389/421 Super Duty solid lifter cam. Quite often you’ll see a camshaft part number used on a camshaft blank casting.

Thank you for clarifying. I'll look up the specs for that cam

[b-man]

Originally Posted by rasilverbird

Thank you for clarifying. I'll look up the specs for that cam

The specs for the 540233 #8 cam are kinda irrelevant, they simply ground your cam using the same blank casting. I wouldn’t expect the #8 cam specs to match up with your cam grind. The numbers actually stamped into the rear of the cam will identify it if you can find the data somewhere.

All of those early Super Duty solid lifter cams had low lift lobes with a flat nose. They were intended for use with 1.65:1 or even 1.75:1 rocker arms, with 1.65s the lift was a meager .445” as camshaft technology wasn’t all that advanced back then.

Thread showing the lobes on the 541596 #10 cam for reference:

https://forums.maxperformanceinc.com...d.php?t=770467