Page 166 - 2021-22_EngineCatalogAP

ROCKER ARMS
LS Series Engines
Chevrolet Performance LS Rocker Arms
An easy bolt-on performance upgrade for smoother valvetrain operation and additional horsepower with increased rpm, without any further modifications.
Part No.
GMP12696105 GMP12681275 GMP12579617 GMP12579615
Description
Steel Roller Rocker Arm, Offset Intake Position L92/LS3/LS9
Steel Roller Rocker Arm, Intake & Exhaust Position LS1/LS2/LS6, Exhaust Position Only L92/LS3/LS9 Steel Roller Rocker Arm, Exhaust Position LS7
Steel Roller Rocker Arm, Offset Intake Position LS7
Stud
8mm 8mm 8mm 8mm
Stud
Pedestal Mount
Ratio
1.7 1.7
1.7
Ratio
1.7 1.7 1.7
1.7
Ratio
1.7
1.7/1.7 1.8/1.8
Ratio Qty.
1.7 1 1.7 1 1.8 1 1.8 1
Ratio Qty.
1.7 16
Qty.
16 16
16
Qty.
16 16 16
16
Qty.
16
16 16
Stainless Steel Rocker Arms LS3/L-92
Part No. Description
PRW Industries
PQX0236431 Platinum Series S/S, Offset Intake, 8mm Hex-Head Fasteners
Shaft-Mount Rocker Arm Systems
LS1/LS2/LS6 and Vortec 4800, 5300, 6000 with Cathedral-Port Heads
LS / LT (GEN-5) SERIES
Part No.
Comp Cams
COM1500 COM1981-16 PRW Industries
PQX3534631
Description
Aluminum Rockers, 8620 Hardened Steel Shafts, Will Need Spacer Covers Max-Lift BSR, Steel Rockers, Bushed, 8620 Hardened Steel Shafts
Platinum Series, 6061-T6 Billet Aluminum Roller Rockers, Billet Steel Pedestals, Billet Aluminum Shaft Mount, with Pushrod Length Checkers, Components and Hardware, Black Anodized
LS3/L92 with Rectangular-Port Heads
Part No.
Comp Cams
COM1500 COM1982-16 COM1521
PRW Industries
PQX3536431
Description
Aluminum Rockers With 8620 Hardened Steel Shafts, Will Need Valve Cover Spacers Max-Lift BSR, Steel Rockers, Bushed, 8620 Hardened Steel Shafts
2024 Billet Aluminum Roller Rockers, 8620 Hardened Steel Shafts
Platinum Series, 6061-T6 Billet Aluminum Roller Rockers, Billet Steel Pedestals, Billet Aluminum Shaft Mount, with Pushrod Length Checkers, Components and Hardware, Black Anodized
Shaft-Mount Rocker Arm Systems LS7
Part No.
Comp Cams
COM1983-16
T & D Machine
TDM2351-170/170 B
TDM2351-180/180 B
Description
Max-Lift BSR, Steel Rockers, Bushed, 8620 Hardened Steel Shafts
Mast Motorsports Cylinder Head Only, .350 Int. O/S, .080 Exh. O/S
Mast Motorsports Cylinder Head Only, .350 Int. O/S, .080 Exh. O/S
B These rockers have Spring Oil Hole (.040) Option # 0720.
Rocker Arm Components
Part No. Description
Chevrolet Performance
GMP11588791
GMP12600936
Yella Terra
YTRYT6279 YTRYT6580 YTRYT6581 YTRYT5060 YTRYT5099 YTRYT5115 YTRYT5117
Replacement Rocker Arm Bolt, 8mm x 1.00 Thread, 1-7/8" Long, Each Replacement Rocker Arm Stand, L92/LS3/LS9, Each
Pedestal Spacers, 1.020" Dia. x 0.085" (26mm x 2.0mm), Each Pedestal Spacers, 1.020" Dia. x 0.100" (26mm x 2.5mm), Each Pedestal Spacers, 1.020" Dia. x 0.150" (26mm x 3.8mm), Each Caged Roller Bearing, All Rockers, Each
Roller, Pin, and Circlip Kit, Each Adjusting Screw and Nut, 24mm, Each Adjusting Screw and Nut, 28.4mm, Each
GMP11588791
164 2021-22 ENGINE BUILDER CATALOG
YTRYT6279