Texas Speed 199-ISSPACPOL660SpringKit .660" Dual Valve Spring Kit for Chevrolet Gen III IV 5.3L 5.7L 6.0L LS EnginesKit Contents American Made PAC Racing Polished Dual Valve Springs Rated to . 660" Lift Patent Pending Precision Race Components Integrated Seat Seal for Dual Valve Springs Titanium Retainers Texas Speed & Performance is proud to offer the latest version of the best dual valve spring kit on the market! This kit now includes our patent pending Precision Race Components integrated seat and seal. You no longer have to worry about special installation

DiabloSport has made the investment in time and resources to keep your vehicle in compliance without sacrificing any power or cutting corners

Pushrod length should always be measured though

These ZEX nitrous bottle heaters thermostatically raise the bottle pressure

These rocker arm studs are designed to be used with Perma-Loc adjusters (not for use with OEM-style

and are not designed for street use

For use with the GM LS1/LS6 w/ FAST™ LSXR™ 102mm Intake Manifold

Bronze colored end must be installed "UP" towards the rocker arm

1L HEMI (2003+) RPM Operating Range 1

Great All Aroung Performance

050 Inch Lift 212 Intake Valve Lift 0

Street/Strip Applications: 3000 Stall

FORD CAR 302/5