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SKU:
NLT1C00271
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16 LS Rocker Arms with Trunnion Upgrade for 4.8 5.3 5.7 6.0
$149.99
In Stock
$149.99
Sale price
$149.99
Regular price
This aftermarket set includes 16 LS-style rocker arms with upgraded trunnions for compatible 4.8L, 5.3L, 5.7L, and cathedral-port 6.0L GM engines.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- GM LS1 5.7L
- GM LS2 6.0L with compatible cathedral-port rocker layout
- GM LS6 5.7L
- GM LR4 4.8L
- GM LM7 / L59 / LM4 / L33 5.3L
- GM LQ4 / LQ9 6.0L cathedral-port applications
- Additional compatible LS-based 4.8L, 5.3L, 5.7L, and early 6.0L engines
Product Overview
Owners usually choose upgraded trunnions during a cam swap, after finding play in the original rockers, or to reduce the risk of loose factory needle bearings entering the engine. The set replaces all 16 positions so the valvetrain uses one consistent rocker and bearing design.
LS cylinder-head style matters more than the displacement printed in an ad. This kit is intended for compatible cathedral-port LS1-style rockers and is not automatically correct for rectangle-port LS3-style heads or later 6.0L and 6.2L applications. Compare oiling hole, stand, bolt, trunnion orientation, and engine code.
Key Features & Performance
- Complete set of 16 rocker arms
- Upgraded trunnion and captured-bearing design
- Supports stock rebuilds and compatible camshaft upgrades
- Avoids reusing worn factory rocker bearings
Common Uses
- Upgrading trunnions during a camshaft installation
- Replacing rockers with bearing play or rough movement
- Building a more dependable cathedral-port LS valvetrain
Technical Specifications
- Product Type: Rocker arm and trunnion set
- Quantity: 16 rocker arms
- Engine Family: GM LS cathedral-port compatible
- Displacements: 4.8L / 5.3L / 5.7L / 6.0L
- Condition: New aftermarket assembly
Installation & Fitment
- Verify cylinder-head and rocker style before ordering
- Inspect pushrods, lifters, valve springs, stands, and oiling
- Orient trunnions and torque bolts to the correct engine procedure
- Check pushrod length and valvetrain geometry on modified engines
Compatibility Notice
Northline Parts does its best to list all known compatible models. The correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Why upgrade LS rocker trunnions? A: The upgrade is commonly used to replace the factory loose-needle arrangement and add bearing retention.
Q: Will these fit an LS3 or 6.2L rectangle-port engine? A: No fit is claimed; rectangle-port rocker geometry can differ.
Q: Are all 16 rockers included? A: Yes. The set services a complete V8 valvetrain.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: LS1 rocker arms trunnion upgrade, 16 LS rockers 4.8 5.3, LQ4 LQ9 rocker set, LS6 valvetrain bearing upgrade, cathedral port LS rocker arms
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.