Hypertech ThermoMaster Computer Chips Leaf Spring Bushings Fitment is custom to small-block

Fitment is custom to small-block Chevy with specific distributor and boot angles for header clearance

Turbocharged engines generate tremendous residual heat after shutdown

The tapered bore gradually compresses the rings as the piston is driven into the cylinder

Ships with the correct PAG oil charge for the refrigerant type

Hypertech ThermoMaster Computer Chips Leaf Spring Bushings Fitment is custom to small-blockThe Hypertech ThermoMaster Computer Chips (ref 9970) from Hypertech is a direct replacement EPROM chip that reprograms your vehicle's ECM with optimized calibration data. Unlike piggyback modules, this tuner replaces the factory chip inside your ECU to deliver permanent, precision tuned fuel and spark maps. Designed for a wide range of GM, Ford, and Chrysler vehicles with OBD I and early OBD II ECUs, the ThermoMaster unlocks horsepower and torque that