Hypertech ThermoMaster Computer Chips Eaton Posi Performance Differentials Using properly engineered valve spring

Using properly engineered valve spring components ensures reliable performance and proper integration with existing vehicle systems

The progressive-rate design keeps compliance over small bumps and firms up under compression

The Edelbrock Performer Cylinder Heads are performance cylinder heads engineered for maximum airflow and combustion efficiency

The housing is precision-cast from high-strength aluminum alloy

The ARP 300-8248 ARP Perma-Loc Rocker Arm Adjusters provides precise valvetrain geometry and reliable rocker arm mounting for high-performance cylinder heads

Hypertech ThermoMaster Computer Chips Eaton Posi Performance Differentials Using properly engineered valve springThe Hypertech ThermoMaster Computer Chips (ref 5762) is a classic ECM performance upgrade from Hypertech that replaces your vehicle's stock calibration EPROM with a professionally tuned chip. For selected GM, Ford, and Dodge vehicles from the 1990s and early 2000s, the ThermoMaster optimizes air fuel ratios, ignition timing, and rev limiters for real world power gains. It's the original plug in performance chip no wires, no modules, no guesswork.