YELLATERRA CHEVROLET V8 LS1/LS2 ULTRALITE 8.0mm ROCKERS, RATIO 1.7 x 1.8 YT6647
- YELLATERRA CHEVROLET V8 LS1/LS2 ULTRALITE 8.0mm ROCKERS, RATIO 1.7 x 1
type: Unknown Type
Description:YELLATERRA - YELLA TERRA
Yella Terra Ultralite is ideal for high revving street applications when coupled with factory/lightweight aftermarket springs.
Built to withstand 400lbs* max open spring pressure
Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction.
Intricately balanced lightweight arms ensuring vital valvetrain stability - focusing attention on the harmony of the entire engine. 50% less oscillating nose weight eliminates valve float in upper RPM range allowing for higher rev ceiling.
Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat.
Proven bolt-on shaft mount design that mounts both inlet/exhaust to common shaft, effectively increasing footprint and clamp load twofold without any further cylinder head modification.
Various ratios available, catering for every camshaft grind. High ratios allow for additional lift on stock and aftermarket camshafts.
Chrome moly steel hardened and ground roller tips of generous diameter (positively retained by internal circlip) preventing abrasion of valve tips and guides commonly seen with non-roller tip rockers. Allows for smoother, quieter operation. Maintains lash and reduces necessary and tedious engine maintenance.
PART NO YT 6647
APPLICATION FACTORY REPLACEMENT/STREET
MAX OPEN SPRING PRESSURE
MOUNTING STYLE SHAFT MOUNT
ROCKER ARM RATIO 1.8x1.7
STUD SIZE 8mm
ROCKER ARM STYLE FULL ROLLER
ROCKER MATERIAL ALUMINIUM
ROCKER ARM BODY STYLE STANDARD
ROCKER ARM NUT STYLE CAPSCREW
MAX SPRING DIAMETER 1.437"
INLET OFFSET NO
QTY SET OF 16
NOTE EASY FIT
Requires YT 5132 10mm valve cover spacer.