Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

distributor question

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Old 07-25-2006, 12:08 PM
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Car: 1988 trans am
Engine: 305 TPI Eaton M90 supercharger
Transmission: T56
Axle/Gears: 3.73
distributor question

I recently swapped engines in my Trans Am from a 1988 305 TBI to a 1986 305 TPI. I had the wiring harness converted to TPI and retained the stock pigtails for the 1988 distributor (remote coil). The 1986 engine had a coil in cap distributor. The computer is a 1986 TPI computer. Now I don't have any spark advance except when I unplug the plug on the passenger firewall used for setting timing, but spark only advances until about 3500 rpm. What should I do?
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