Chevy LS1 Stainless Steel Shaft Pro Series Rocker Arm System, 1.7 Ratio, Bronze Bushing Trunnion, Needle Bearing Tip

Chevy LS1/LS2/LS6 1.7 Ratio Shaft Rocker Arm System for Improved Valvetrain Performance

These 1.7 ratio shaft rocker arm system are designed for Chevy LS1/LS2/LS6 applications, helping improve valve lift, reduce friction, and support more responsive engine performance.

Built from stainless steel, this rocker arm design balances strength, durability, and valvetrain stability for street performance, restoration, and upgraded engine builds.

The bronze bushing trunnion helps promote smoother rocker motion and more consistent valve control, especially when paired with compatible camshaft, pushrod, and valve spring combinations.

Configured where applicable, these rocker arms are built for proper fitment and reliable operation. Always verify rocker ratio, stud size, pushrod length, guideplate alignment, and valve spring clearance before installation.

Fitment

COMPATIBLE WITH
GM LS GEN III/IV CATHEDRAL PORT V8 ENGINES
• 4.8L / 293 in³ (LR4, LY2, L20)
• 5.3L / 325 in³ (LM7, L59, LM4, L33, LH6, LY5, LMG, LMF, LC9, LH8, LH9)
• 5.7L / 346 in³ (LS1, LS6)
• 6.0L / 364 in³ (LS2, LQ4, LQ9)

COMMON VEHICLE APPLICATIONS
Chevrolet Camaro / Corvette (LS1, LS2, LS6 equipped)
Pontiac Firebird / GTO (LS equipped)
Chevrolet Silverado / GMC Sierra / Tahoe / Yukon (LS equipped)

NOTES
Designed for LS1/LS2/LS6-style cathedral port LS applications.
Not intended for LS3/L92 rectangle port cylinder heads unless specifically listed.
Verify rocker mounting style, rocker ratio, pushrod length, valve spring clearance, and valve cover clearance before installation.

Specifications:
Grade Type: Performance
Material: Stainless Steel
Maximum RPM: 7,000
Mounting Type: Shaft
Open Pressure Rating: 500 lbs.
Quantity: 16
Rocker Arm Body Style: Standard
Rocker Arm Finish: Natural
Rocker Arm Material: Stainless Steel
Rocker Arm Ratio: 1.7
Rocker Arm Type: Full Roller
Self Aligning: No
Shims Included: No
Trunnion Style: Needle Bearing