Name: Yella Terra GM LS1/LS2 Ultralite Pro 1.8:1 8mm Shaft-Mount Roller Rockers — YT 6722
Brand: Yella Terra
SKU: YT 6722
Price: 1050.00 AUD
Availability: InStock

Yella Terra YT 6722 LS1 LS2 Ultralite Pro 1.8 shaft mount roller rocker set

Yella Terra GM LS1/LS2 Ultralite Pro 1.8:1 8mm Shaft-Mount Roller Rockers — YT 6722

$1,050.00

Yella Terra’s Ultralite Pro shaft-mount roller rocker system is a lightweight, high-strength valvetrain upgrade for LS1/LS2 applications. This set uses a 1.8:1 rocker ratio with 8 mm mounting hardware and combines low oscillating mass with a rigid common-shaft layout for street and performance engines.

Ultralite Pro construction

Set of 16 full-roller aluminium rocker arms.
Aircraft-grade extruded aluminium rocker bodies help reduce valvetrain mass and dissipate top-end heat.
Oversize full-complement caged bearings are designed specifically for oscillating rocker loads.
Oversize precision-ground trunnions reduce friction and improve support.
Hardened and ground chromoly roller tips reduce valve-tip and guide wear.
Common-shaft inlet/exhaust mounting increases the clamping footprint and rocker stability.
Yella Terra rates the Ultralite Pro design to 480 lb maximum open spring pressure.
The supplier states approximately 50% less oscillating nose weight than the factory rocker system, supporting greater RPM potential and improved valve-float control.
Valve-cover clearance: Requires Yella Terra YT 5132 10 mm valve-cover spacer.
Yella Terra notes that variation in GM cylinder-head castings can require localised clearancing; verify clearance during installation.

Technical specification

Rocker ratio: 1.8:1
Mounting: shaft mount, 8 mm capscrew.
Operation: hydraulic.
Maximum spring diameter: 1.437 in.
Inlet offset: No.
Quantity: set of 16.

Installation: Correct pushrod length, geometry, spring clearance and piston-to-valve clearance must be checked for the complete camshaft/cylinder-head combination.