by Dr. Radut

Camshaft

Cam location, Std.-stock HEMI / 440 or +.250 raised

Cam diameter, Std.-stock HEMI /440 or large ( 2.125 (54mm), 2.362 (60mm), or 65mm )

Cam Journals, Std.-stock HEMI /440 , bare aluminum Journals ( no bearings), aftermarket Babbit Bearings or Needle Bearings

A – Large journal Raised cam:
-W -narrow center journal .904 or 1″ lifters
– D larger cam Diameter (Note X)
– X cam has been reground several times and
resulted in base circle smaller than original diameter
S – low spring pressure for RPM used resulting in
bouncing lifter and finally broken lifter.

B – Standard journal Raised cam:
– W -wide center journal .904″ lifters only
– D smaller cam Diameter
A – Large journal Raised cam:
– P2 – 2 or 3 – 5/16″ drive pins
– 3/8″ Bolts		 B – Standard journal Raised cam:
– P1 – 1 – 1/4″ drive pins
– 5/16″ Bolts
Gear drives are the same for all “raised” camshafts the cam has a step for the original cam diameter (pictured above 2 left camshafts) the thrust bearing (Torrington) is larger :
60mm –> shims are .040″ thick x 3.335″ O.D. with a 2.375″ I.D. and the bearing is .120″ thick x 3.335″ O.D. x with a 2.375″ ID

Raised camshafts are ground with 48 degree lifter angles ( to correct the geometry )
( * some early cams (Mega Block) were ground at 50 degree lifter angles-for Hemi and 47 degree for RB/BB ) —— stock cam location is 45 degree lifter angle)

and optional firing orders