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Lifters

Lifter bore .904 (std),  1" ,  1.062"  ,  1.125"
Lifter bore centers from 1.812(std)  to 2.200  ( fuel is usuall 1.9, fathead is usually 2.0 )

Morel :
#5449(1 pair=4448) old#4847(1 pair=4182)
 •1.000D 
 •.920 Roller Diameter
 •TOP FUEL/TAD? - SINGLE EXH ROLLER

# ???? 
 •1.000D
 •.920 Roller Diameter
 •TOP FUEL - DOUBLE EXH ROLLER

# 4848   (1 pair=4204)
 •1.063D
 •.920 Roller Diameter
 •TOP FUEL - Double EXH ROLLER

# - 5172-5173-5175-5176 TOP FUEL LIFTER/SINGLE EXH ROLLER ?

Crane:
 #95543-16 - .904 -  +.100 -.200 spread, .120" PR height
 #66548-16 - .904 - 1.800 (stock) spread
 #66542-16 - .904 -  +.100 -.200 spread
 #66550-16 - .904 -  +.100 -.200 spread ( PR Oiling)​
 #66547-16 - 1.000 - +.100 -.200 spread, Std PR height
 #66548-16 - 1.063 - .920" wheel diam.X .595" wide
        +.100" or .200" Spread
 #66549-16 - 1.063 - .920" wheel diam.X .595" wide
       +.100" or .200" Spread, +.200" Tall PR height
R-280/500
Lifter Rise Duration increase with .810"
Roller instead of .750"
.020 lift 0.8 deg
.050 1.3
.100  1.6
.200 1.7
.300 1.4
.400  0.9