Name: Yella Terra GM LS3/LS9/LSA/L98 Ultralite Pro 1.7:1 8mm Shaft-Mount Roller Rockers — YT 6724
Brand: Yella Terra
SKU: YT 6724
Price: 1050.00 AUD
Availability: InStock

Yella Terra YT 6724 LS3 LS9 LSA L98 Ultralite Pro 1.7 shaft mount roller rocker set

Yella Terra GM LS3/LS9/LSA/L98 Ultralite Pro 1.7:1 8mm Shaft-Mount Roller Rockers — YT 6724

$1,050.00

Yella Terra’s Ultralite Pro shaft-mount roller rocker system is a lightweight, high-strength valvetrain upgrade for LS3/LS9/LSA/L98 applications. This set uses a 1.7:1 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: Yella Terra includes the YT 5132 10 mm valve-cover spacer with this set.
8 mm bolt-down shaft-mount configuration is designed as an easy-fit performance upgrade; always verify rocker, spring and cover clearance with the actual cylinder-head combination.

Technical specification

Rocker ratio: 1.7:1
Mounting: shaft mount, 8 mm capscrew.
Operation: hydraulic.
Maximum spring diameter: 1.437 in.
Inlet offset: Yes.
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.