2011 - Crane Cams

VALVE TRAIN
Rocker Arm Adjusting Nuts, Screws
Steel Rocker Arm Adjusting Nuts, “Kool Nuts TM ”
Crane’s locknuts for stamped steel
rocker arms are available in selflocking
type standard configurations,
and in our patented Kool
Nut TM oil deflection design. These
direct the pressure-fed oil flow to
the pivot ball-rocker arm interface,
resulting in superior lubrication
and cooling in this critical area.
Shaft-Type Rocker Arm Adjusting Screws
Crane shaft-type rocker arm adjusting screws are
precision machined from premium steel billet material
and selectively hardened to provide maximum
strength. These screws are extremely lightweight
and drilled for oiling when necessary.
322
Kool Nuts lower
oil temp!
HERE’S HOW
RIBS DELIVER OIL TO
FULCRUM TO HELP
COOL IT
COUNTERBORED THREADS
WILL ALSO FIT
BOTTLENECK STUDS
CRANECAMS.COM
ALLEN HEAD SET SCREWS FOR
POSITIVE LOCKING
TOP LIP TO CATCH AND
DIRECT OIL SPRAY
HEAT SINK, TO DRAW
TEMPERATURE
FROM FULCRUM
Stud Dia. &
Thread Description Part No.
5/16”-24 Self locking 99772-16
3/8”-24 Self locking 99770-16
3/8”-24 Kool Nuts TM with oil deflector for improved cooling and lubrication. Counterbored on bottom to also fit bottleneck studs 99768-16
7/16”-20 Self locking 99771-16
7/16”-20 Kool Nuts TM with oil deflector for improved cooling and lubrication. Counterbored on bottom to also fit bottleneck studs 99769-16
Stud Dia. & Ball/Cup
Thread Diameter Description Part No.
3/8”-24 5/16” ball Chrysler V-8 “LA”, “B”, and 426 Hemi, with locknut 99802-16
3/8”-24 5/16” cup For Sportsman Series shaft mount rocker arms and Ford FE V8 332 through 428 with 34791-1 rocker arm set 99785-16
3/8”-24 5/16” cup For Pro Series shaft mount rocker arms 99785-16
3/8”-24 3/8” ball Chrysler V-8 “LA”, “B”, and 426 Hemi, with locknut (For severe duty applications, special pushrods required) 99780-16
7/16”-20 5/16” ball Chrysler V-8 “LA”, “B”, and 426 Hemi, with locknut (For repair or ratio modification of rocker arms) 66770AS-16
7/16”-20 3/8” ball Ford V-8 332 thru 428, with locknut, for 34772-16 ductile iron rocker arms 99680-16