Hypertech 121351 Hypertech Street Runner Power Chips ARP Pro Series Cylinder Head Bolt Kits Replacing these with 95A durometer

Replacing these with 95A durometer Hyper-Flex polyurethane eliminates the compliance that creates vague on-center feel and delayed steering response

water leaks

The 7531 also includes a built-in tach driver

This Dart Severe-Duty Stainless Steel Valves is manufactured to meet the demands of street and competition use with attention to the specific requirements of the intended application

The manifold accepts both square-bore and spread-bore carburetors and includes a comprehensive gasket set and stainless steel bolts

Hypertech 121351 Hypertech Street Runner Power Chips ARP Pro Series Cylinder Head Bolt Kits Replacing these with 95A durometerThe Hypertech 121351 Hypertech Street Runner Power Chips from Hypertech is a direct ECU reprogramming solution that replaces your vehicle's factory calibration EPROM with an optimized performance tune. Designed for OBD I and early OBD II gasoline vehicles, this performance chip rewrites fuel and spark tables for measurable horsepower and torque gains. It's a straightforward hardware upgrade that requires no laptop, no software, and no dyno tuning.