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Top Street Performance

Chevy LS1/LS2/LS6 Pro Series Cast Steel Rocker Arms, 1.7 Ratio, Bronze Bushing Trunnion, Needle Bearing Tip

Chevy LS1/LS2/LS6 Pro Series Cast Steel Rocker Arms, 1.7 Ratio, Bronze Bushing Trunnion, Needle Bearing Tip

SKU: 60874

$440.00
$440.00 $500.00
Shipping calculated at checkout.

In stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.

Product Details

Features

  • Fits GM LS1/LS2/LS6 cathedral-port LS valvetrain applications
  • Aluminum construction reduces valvetrain mass while maintaining strength and durability under load
  • Designed for stud mount configurations with roller tip or full roller design for reduced friction
  • Improves valve train stability and efficiency; verify pushrod length, guideplate alignment, and clearance before installation

Description

Chevy LS1/LS2/LS6 1.7 Ratio Roller Rocker Arms for Improved Valvetrain Performance

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

Built from cast 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.

Specs

Grade TypePerformance
MaterialCast Steel
Maximum RPM7,000
Mounting TypePedestal
Open Pressure Rating500 lbs.
Quantity16
Rocker Arm Body StyleStandard
Rocker Arm FinishNatural
Rocker Arm MaterialCast Steel
Rocker Arm Ratio1.7
Rocker Arm TypeFull Roller
Self AligningNo
Shims IncludedNo
Stud Thread Diameter3/8 in.
Tip StyleNeedle Bearing
Trunnion StyleBronze Bushing

Engine Fitment

COMPATIBLE WITH
GM LS GEN III/IV CATHEDRAL PORT V8 ENGINES
• 5.7L / 346 in³ (LS1, LS6)
• 6.0L / 364 in³ (LS2)

COMMON VEHICLE APPLICATIONS
Chevrolet Camaro / Corvette (LS1/LS6 equipped)
Pontiac GTO (LS1/LS2 equipped)
Cadillac CTS-V and GM LS swap applications using cathedral port LS heads

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.

Q&A

What applications are these rocker arms compatible with?
These rocker arms are designed for COMPATIBLE WITH:, CHEVROLET SMALL BLOCK V8 GEN. III/IV (LS BASED), 5.7 L / 346 in3, 6.0 L / 364 in3.


Will these rocker arms fit my engine?
These rocker arms are intended for GM LS applications and should match your cylinder head and valvetrain setup.


What do rocker arms do?
Rocker arms transfer motion from the camshaft to the valves, controlling valve opening and closing.


What is the rocker arm ratio?
These rocker arms have a 1.7 ratio, which affects valve lift and engine performance.


What material are these rocker arms made from?
These rocker arms are made from cast steel, providing strength while reducing weight.


How many rocker arms are included?
This set includes 16 rocker arms.


Will these rocker arms increase performance?
Yes, performance rocker arms can improve valve control, reduce friction, and increase power potential.


Do I need supporting modifications for these rocker arms?
Depending on your setup, you may need compatible pushrods, valve springs, and proper valvetrain geometry.


Do rocker arms affect valve lift?
Yes, rocker arm ratio directly affects valve lift and can change engine performance characteristics.


Are these a good upgrade over stock rocker arms?
Yes, aftermarket rocker arms can improve durability, accuracy, and performance over stock components.


Can these rocker arms be used in performance builds?
Yes, rocker arms are commonly used in performance and high-performance engine builds.

Emissions Notice

This Top Street Performance (TSP) product is designed for racing and off-road competition use only. It is not legal for use on public roads or emissions-controlled vehicles and does not comply with federal, state, or local emissions regulations. The buyer assumes all responsibility for legal use and installation.

What is a Emissions-Controlled Vehicle?
"An emissions-controlled vehicle is any vehicle equipped with a factory-installed emissions control system designed to reduce air pollution. These systems include catalytic converters, oxygen sensors, EGR (Exhaust Gas Recirculation) valves, and diesel particulate filters (DPF). Most vehicles manufactured after 1975 are considered emissions-controlled and must comply with federal and state emissions laws when used on public roads."