FASTENERS
Rocker Arm Adjusters
Shank "C"
Body Dia. "D"
Length "A"
Part No.
Description
Thread
ARP Perma-Loc Compact 12-point fasteners won’t loosen. Sold in sets of 16. ARP300-8241 Stamped Steel Rocker 3/8"-24 .600" .620" 1.200" ARP300-8242 Stamped Steel Rocker 7/16"-20 .600" .640" 1.200" ARP300-8243 Alum. Rocker 3/8"-24 .600" .550" 1.200" ARP300-8244 Alum. Rocker 3/8"-24 .600" .600" 1.200" ARP300-8245 Alum. Rocker 7/16"-20 .600" .550" 1.200" ARP300-8246 Alum. Rocker 7/16"-20 .600" .600" 1.200" ARP300-8247 Stud Girdle 7/16"-20 .600" .750" 2.050" ARP300-8249 Big Block With Stud Girdle 7/16"-20 .600" .750" 2.050"/2.615"
Part No.
Description
Stud Size
Comp Cams Precision ground and tapered. Sold in sets of 16. COM4508-16 Stud Girdle Adjusting Nut
COM4600-16
7/16" 3/8" 7/16" 7/16" 7/16" 3/8" 3/8" 7/16" 3/8" 5/16" 3/8" 7/16" 3/8" 7/16" 7/16" 7/16" 7/16" 3/8" 3/8"
COM4509-16 COM4510-8 COM4514-KIT COM4600-16 COM4601-16 COM4602-16 COM4603-16 COM4604-16 COM4610-16
Stud Girdle Adj. Nut (8) COM4509, (8) COM4509S Stud Girdle Adjusting Nut, Big Block Chevy Intake Rocker Adj. Kit For Late Big Block Chevy With Non-Adj.
Alum., Stainless Or Pro Magnum Rockers Alum., Stainless Or Pro Magnum Rockers
Magnum Polylock Magnum Polylock High Energy Polylock
Rocker Adj. Kit For Small Block Ford With Non-Adj. Rockers
COM1400N-16 Rocker Arm Nuts, for Roller Tip Magnum Rockers, Self-Locking COM1401N-16 Rocker Arm Nuts, for Roller Tip Magnum Rockers, Self-Locking
COM4654-16
Rocker Arm Nuts, GM LS1 for Pro Magnum Rockers
Individual Adjusting Nuts COM4508-1
Stud Girdle Adj. Nut
COM4508S-1 COM4510-1 COM4600-1 COM4601-1 COM4509-1
Stud Girdle Adj. Nut With Snap Ring
Stud Girdle Adj. Nut
Hi-Tech Polylock, Pro Magnum Hi-Tech Polylock, Pro Magnum
Stud Girdle Adj. Nut, Stud Girdle, Black Oxide
Steel Rocker Arms Available in traditional self locking design, or Kool Nut, which deflects oil to the pivot. Sold in sets of 16. Part No. Description Stud Size Crane Cams CRN99768-16 Kool Nut, Counterbored For Bottleneck Studs 3/8"-24 CRN99769-16 Kool Nut, Counterbored For Bottleneck Studs 7/16"-20 CRN99770-16 Self Locking 3/8"-24 CRN99771-16 Self Locking 7/16"-20 CRN99772-16 Self-Locking 5/16"-24 Aluminum Roller Rocker Arms Engineered for use with Crane roller tip, needle bearing aluminum rocker arms. Sold in sets of 16. Part No. Description Stud Size Crane Cams CRN99788-16 .550" Min. Rocker Slot Width, 1.063" Tall 3/8"-24 CRN99790-16 .550" Min. Rocker Slot Width, .922" Tall 7/16"-20 CRN99792-16 .600" Min. Rocker Slot Width, .969" Tall 7/16"-20 ProForm Designed to fit most extruded roller rocker arms without stud girdle. Sold in sets of 16. PFM66935 Poly Locks for Alum. Rockers .550" OD 3/8"-24 PFM66936 Poly Locks for Alum. Rockers .550" OD 7/16"-20 Dart Machinery DRT64210210 Stud Girdle Intake Adjusting Nut, Big Block Chevy Long, Each 7/16"
CRN99769-16
CRN99788-16
PFM66935
2018 ENGINE BUILDER CATALOG
473
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