ROCKER ARM STUDS AND ADJUSTER NUTS
Rocker Arm Studs - Cont. Part No. Description
A
B
C
D
Manley Professional rocker studs are constructed from 8740 material and feature rolled threads and large radii. Street Master studs are made from Maxalloy steel. MAN42103-16 SBC/BBC/Ford, Street Series 7/16"-20 Top, 7/16"-14 Bottom (16)
2.550" .790" .890" .870" 2.560" .690" .840" 1.030" 2.850" .750" 1.300" .800" 2.810" .740" 1.020" 1.050"
MAN42106-16 MAN42287-16
SBC/BBC/Ford, Street Series 3/8"-24 Top, Bottom (16) SBC 18°, Pro Series, 7/16"-20 Top, 7/16"-14 Bottom (16)
MAN42288-16 SBC With Stud Girdle, Pro Series, 7/16"-20 Top, 7/16"-14 Bottom (16)
Pioneer PIORM-348-16
SB Chevy, 3/8"-24 Top, 7/16"-14 Bottom
2.325" .750" .840" 1.030"
Base Length
Stud Size
Stud Length
Part No.
Description
Base Size
Milodon Milodon rocker arm studs are made from 8740 chrome moly steel, heat-treated for strength of 190,000 PSI. Feature large ground radius fillet, machined rolled threads, and black oxide finished. Set of 16. MIL84287 SB Chevy/Pontiac 7/16"-20" Top, 7/16"-14 Bottom Mr. Gasket Competition Screw-in Extra-strength, grade 8 fasteners incorporate class 3 threads and a black-plated finish. Part No. Description MRG1074 SBC/BBC, 7/16"-20 Top, 7/16"-14 Bottom, 2-7/16" Long (16) MRG1075 SBC/BBC/SBF, 3/8"-24 Top, 7/16"-14 Bottom, 2-3/8" Long (16) MRG1076 SBC/ SBF, 3/8"-24 Top, 7/16"-14 Bottom, .470" Long, (no hex base nut) (16)
7/16" .750" 1.750" .875"
MRG1074
Rocker Arm Stud Bolt Kit Part No. Description Edelbrock EDE8597
GM LS GEN III, Rocker Arm Bolt Kit, 8mm x 1.5, 1.770' Long
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 .650" .650"
1.200" 1.200" 1.200" 1.200" 1.200" 1.200" 1.200"
ARP300-8242 ARP300-8243 ARP300-8244 ARP300-8245 ARP300-8246 ARP300-8247 ARP300-8249
Stamped Steel Rocker Aluminum Rocker Aluminum Rocker Aluminum Rocker Aluminum Rocker
7/16"-20 3/8"-24 3/8"-24 7/16"-20
.650" .600" .600" 600"
.650" .550" .600" .550" .600" .750" .750"
7/16"-20 .600"
Stud Girdle
7/16"-20
.600"
Big Block/Stud Girdle
7/16"-20 .600"
1.200"/1.485"
Part No.
Description
Stud Size
Comp Cams ( Precision ground and tapered. Sold in sets of 16) COM1400N-16
Rocker Arm Nuts, for Roller-Tip Magnum Rockers, Self-Locking Rocker Arm Nuts, for Roller-Tip Magnum Rockers, Self-Locking
3/8"
COM4600-16
COM1401N-16 COM4508-16 COM4509-16 COM4510-8 COM4514-KIT COM4600-16 COM4601-16 COM4602-16 COM4603-16
7/16" 7/16"
Stud Girdle Adjusting Nut
Stud Girdle Adjusting Nut (8) COM4509, (8) COM4509S Stud Girdle Adjusting Nut, Big Block Chevy Intake
3/8"
7/16" 7/16" 7/16"
Rocker Adjusting Kit for Late Big Block Chevy with Non-Adjustable
Aluminum, Stainless or Pro Magnum Rockers Aluminum, Stainless or Pro Magnum Rockers
3/8" 3/8"
Magnum Polylock Magnum Polylock
7/16"
571 2021-22 ENGINE BUILDER CATALOG
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