COSPEED

Colorado Speed LS Retro-Fit Rocker Arms, 1.7:1 (GM LS Series)

There’s no denying that the GM LS engine platform has proven itself as a performer. The valve train is no different, with an improved design that makes for a perfect combination of power and durability to complement the impressive cathedral port cylinder head design. The rocker arm design features a lightweight, yet stiff rocker body that is strong enough for most applications. However, when it comes to high performance racing applications, high rpm and high valve spring pressures can put the factory rocker arm’s trunnion under intolerable stress.

Colorado Speed has taken an OEM cast steel replacement rocker arm body and added a captured roller trunnion for use in extreme street and race applications. Perfect for drag and circle track racing applications that mandate the use of stock engine components, this performance rocker arm modification is a “must have” upgrade for your LS factory rocker arms. The captured roller trunnion increases stiffness and durability and is NASCAR proven.

Colorado Speed uses COMP Cams® with a new LS rocker arm retro-fit trunnion kit that replaces the cageless, loose OEM needle bearings and powdered metal trunnion with a premium 8620 steel alloy trunnion and caged roller bearings for added durability. The new design from COMP Cams® utilizes caged roller bearings that greatly reduce the possibility of the bearing failure experienced with stock LS needle bearings, which can send loose needles throughout the engine upon failure.

Colorado Speed LS Retro-Fit Rocker Arms are based off customer supplied core rocker arms. Customers can either supply their OEM rocker arms to us or prepay a core charge and send us their core rocker arms within 30 days for a core charge refund. Each customer supplied core rocker arm is checked in detail and refreshed. Customer supplied core rocker arms must be in useable condition. No core charge refunds will be issued on damaged unuseable customer supplied core rocker arms.

If you are supplying your core rocker arms to Colorado Speed, a representative will contact you on shipment after receiving your order.

CLICK HERE TO PURCHASE

COMP Cams LS Series Retro-Fit Trunnion Upgrade Kit (GM LS Series)

Valve train technology leader introduces new premium trunion upgrade for GM LS rocker arms to optimize both performance & durability

There’s no denying that the GM LS engine platform has proven itself as a performer. The valve train is no different, with an improved design that makes for a perfect combination of power and durability to complement the impressive cathedral port cylinder head design. The rocker arm design features a lightweight, yet stiff rocker body that is strong enough for most applications. However, when it comes to high performance racing applications, high rpm and high valve spring pressures can put the factory rocker arm’s trunion under intolerable stress.

Enter COMP Cams® with a new LS rocker arm retro-fit trunion kit that replaces the cageless, loose OEM needle bearings and powdered metal trunion with a premium 8620 steel alloy trunion and caged roller bearings for added durability. The new design from COMP Cams® utilizes caged roller bearings that greatly reduce the possibility of the bearing failure experienced with stock LS needle bearings, which can send loose needles throughout the engine upon failure.

Perfect for drag and circle track racing applications that mandate the use of stock engine components, this performance rocker arm modification is a “must have” upgrade for your LS factory rocker arms. As proof of success, for the last two years this rocker arm trunion upgrade has been tested and performance-proven in the NASCAR GM LS spec engine series.

Features & Benefits:
• Replaces OEM powdered-metal trunion with stiffer, more durable 8620 steel alloy material
• Factory needle bearings replaced with caged roller bearings to increase rigidity & reliability
• Designed for circle track & drag racing classes where stock engine components are mandated
• Performance-proven & tested in NASCAR GM LS spec engine series

CLICK HERE TO PURCHASE

Lunati LS Retro-Fit Rocker Arms, 1.7:1 (GM LS1, LS6, LS2 & LS3)

Lunati has taken an OEM cast steel replacement rocker arm body and added a captured roller trunnion for use in extreme street and race applications. The captured roller trunnion increases stiffness and durability and is NASCAR proven.

CLICK HERE TO PURCHASE FOR THE LS1, LS6 & LS2

CLICK HERE TO PURCHASE FOR THE LS3



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