Product Description
Michigan Motorsports LS7 Rocker Arms with Roller Bearing Trunnion Upgrade Installed
Fits LS7 7.0L Engines Only | Complete Set of 16 New OEM GM LS7 Rocker Arms with Upgraded 8620 Steel Trunnions & Caged Roller Bearings
Upgrade the valvetrain in your LS7 with Michigan Motorsports LS7 Rocker Arms with Roller Bearing Trunnion Upgrade Installed. This complete ready-to-install set starts with new OEM GM LS7 rocker arms that are professionally disassembled and upgraded with premium 8620 steel alloy trunnions and caged roller bearings. The factory LS rocker arm needle bearing design is a known weak point, especially in aggressive heads-and-cam combinations, high-RPM builds, and performance LS7 engines. This upgraded trunnion setup replaces the cageless OEM needle bearings and powdered metal trunnions with a stronger, more controlled roller bearing assembly designed to improve rocker arm durability, reduce the chance of bearing failure, and help protect your engine from loose needle bearing debris.
Key Features & Benefits
- Complete New OEM GM LS7 Rocker Arm Set: Includes 8 LS7 intake rocker arms, 8 LS7 exhaust rocker arms, and 16 high-strength rocker arm bolts for a complete LS7 valvetrain service package. Each rocker arm starts as a new OEM GM LS7 rocker and is upgraded by Michigan Motorsports before shipping.
- Roller Bearing Trunnion Upgrade Installed: These LS7 rocker arms are professionally disassembled and rebuilt with an upgraded trunnion kit already installed. This saves installation time, removes the need for special press work, and gives you a clean, ready-to-bolt-on rocker arm upgrade for compatible LS7 cylinder heads.
- Premium 8620 Steel Alloy Trunnions: The upgraded trunnion assembly replaces the factory powdered metal trunnion with a premium 8620 steel alloy trunnion for added strength and durability. This is a major reliability improvement for LS7 engines that see performance use, higher RPM, aggressive camshafts, or upgraded valve springs.
- Caged Roller Bearing Design: The caged roller bearings replace the loose, cageless OEM needle bearing design, greatly reducing the chance of bearing failure that can send loose needles through the engine. This helps protect critical internal components and supports a more dependable valvetrain setup.
- Built for Stock & Modified LS7 Engines: Whether your LS7 is stock, cammed, heads-and-cam upgraded, or built for serious performance, an upgraded trunnion rocker arm setup is highly recommended. This kit is ideal for preventive maintenance, valvetrain reliability upgrades, and aggressive LS7 performance combinations.
Kit Includes
- (8) New OEM GM LS7 intake rocker arms with upgraded roller bearing trunnions installed
- (8) New OEM GM LS7 exhaust rocker arms with upgraded roller bearing trunnions installed
- (16) High-strength LS7-style rocker arm bolts
Notes
- Brand: Michigan Motorsports
- Application: LS7 rocker arm set with upgraded roller bearing trunnion kit installed.
- Rocker Arm Type: New OEM GM LS7 intake and exhaust rocker arms upgraded by Michigan Motorsports.
- Trunnion Material: Premium 8620 steel alloy.
- Bearing Style: Caged roller bearing trunnion upgrade.
- Recommended Use: LS7 rocker arm replacement, trunnion upgrade, valvetrain reliability improvement, heads-and-cam builds, high-RPM LS7 applications, stock preventive maintenance, and performance engine builds.
- Important Compatibility Note: Fits LS7 7.0L engines only.
Key Fitments
- LS7 7.0L engine applications
- LS7 cylinder head applications
- LS7 rocker arm replacement applications
- LS7 roller bearing trunnion upgrade applications
- Stock LS7 valvetrain reliability upgrade applications
- Heads-and-cam LS7 valvetrain applications
- Fitment note: Fits LS7 engines only.
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Great part and great customer service. I had several questions that were answered quickly helping me get the right part!
