Home » Jet Performance JET Performance Chip 1989 Chevy/GMC C/K Full Side Pickup for 305 TBI Automatic Transmission w/Overdrive

Jet Performance chip 1989 chevy/gmc c/k full side pickup for 305 TBI Automatic Transmission w/Overdrive

Catalog #: 77610.311
Jet Performance Part #: 28910

JET Performance Chips offer the most horsepower available for your 1981-1995 GM car, truck or SUV. Add up to 23 horsepower instantly with simple, plug-in installation!


Only JET Performance Chips provide exclusive, full range Dynamic Spectrum Tuning of the air/fuel ratio, ignition advance, transmission and various other parameters. Each program is track and dyno tested to ensure the most possible horsepower and drivability from each application. 50 state smog legal!

  • STAGE 1 - For stock or mildly modified vehicles. Fuel and timing curves are modified for optimal performance and mileage using less expensive, lower octane fuels. Programming is designed to burn fuel at peak efficiency, which results in improved performance and mileage. Daily drivers can use lower cost regular fuel for potential mileage gains, but for optimal performance gains use of mid-grade or better is recommended.
Installation Notes
Installation Difficulty:
Level 1Beginner

Disconnect Battery Cable

Installation Time: Less than an hour
Parts Included

JET Performance Chip

Automatic Transmission w/Overdrive
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