COMPUTER CHIP THERMO MASTER Coil Springs These main studs prevent cap

These main studs prevent cap walk and main bearing bore distortion at elevated RPM where factory fasteners may allow crankshaft deflection and bearing clearance changes

raised rev limiters where safe

Order the Accel 4040K SuperStock 4000 Series and feel the difference in every gear

Sold as a complete set with required sleeves and washers

The Clevite Engine Parts MS-496P Clevite P-Series Main Bearings are precision engine bearings engineered for high-performance engines demanding tight clearances and consistent oil film retention

COMPUTER CHIP THERMO MASTER Coil Springs These main studs prevent capThe COMPUTER CHIP THERMO MASTER (ref 6754) is a classic ECM performance upgrade from Hypertech that replaces your vehicle's stock calibration EPROM with a professionally tuned chip. For a wide range of GM, Ford, and Chrysler vehicles with OBD I and early OBD II ECUs, 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.