Proflow Pro OE Style Trunnion Upgrade 4340 Alloy Roller Rocker Kit for VT VY VX VZ VE Holden Commodore & HSV LS2 LS1 V8 1.7 Ratio for GM12681275

Designed and engineered in-house, Proflow products are manufactured to the highest of standards. Proflow products are computationally optimized and tested within their own engineering department. Rapid prototypes are created to guarantee perfect fitment, as well as pleasing aesthetics. Proflow take pride in every part they make. Remember, Proflow are the leaders in performance products!

Stock LS rocker arms can experience cageless needle bearing failure when loads are increased. Proflow’s engineers have solved this problem with upgraded rockers featuring a stronger and more durable trunnion and captured bearing design. These upgraded rockers increase strength and utilize caged precision roller bearings to improve valve train durability. The trunnions are secured by snap rings and the rockers are made from high grade 4340 alloy steel for light weight and added durability.

Utilizing the durable, strong, yet lightweight OEM style rocker arms made from 4340 alloy, coupled with their upgraded captured roller trunnions made from bearing steel, Proflow’s Trunnion Upgraded Alloy Roller Rocker kits are a perfect addition to any camshaft, boost upgrade or overhaul for your LS engine. Keep your valvetrain reliable throughout the entire rpm range with one of these kits.

Utilizing the factory geometry and 1.7 ratio coupled with the Trunnion upgrade and 4340 alloy steel construction, means you get all the benefits of the higher durability and strength you need to cope with the higher lift and bigger duration of a larger cam, higher rate valve springs and other performance upgrades, WITHOUT needing to change your factory or aftermarket tune to suit.

Unlike a DIY trunnion upgrade kit, the Proflow Trunnion Upgraded Alloy Roller Rocker kit is fully assembled and is ready to bolt on and go! These are a true bolt on, meaning you reuse your standard mounting bolts and they are torqued to factory specifications. No need to change to taller valve covers, no need to change pushrods, no need to buy expensive new mounting hardware, they'll take your standard sized valve springs, no tuning required, and best of all, NO MACHINING.

Specifications:

• Proflow Pro OE Style Alloy Roller Rocker Kit with Trunnion Upgrade
• Part Number: PFERRK-3000
• Kit includes 16 Rocker Arms & M8 Hexagon Socket Bolts
• Rocker Arm Mounting Style: Stud
• Rocker Arm Ratio: 1.7
• Rocker Arm Style: Roller fulcrum
• Rocker Arm Material: High Grade 4340 Alloy Steel
• Rocker Arm Body Style: Standard
• 12 Month Warranty

Fitment Notes:

• Replaces Genuine GM 12681275 OEM rocker arms.
• Suitable for VT VX VY VZ VE Holden Commodore & HSV LS1 LS2 V8.
• Will not suit LS3 L76 L77 L98 LSA - please see our store for other listings.