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Fox T-Bird/Cougar Forums

Technical => Electrical Tech => Topic started by: 88 VI Bird on April 24, 2005, 06:53:25 PM

Title: engine swap will the wiring need to be swaped too
Post by: 88 VI Bird on April 24, 2005, 06:53:25 PM
I would like to swap my 3.8 to a 5.8 will the ecu and the wiring for the electrical components need to be changed or just at the connectors?
Title: Re: engine swap will the wiring need to be swaped too
Post by: TurboCoupe50 on April 24, 2005, 08:01:44 PM
If you have a '88 SEFI 3.8 at the minium you will need a '87-'88 HO 5.0 Mustang ECU(EEC) and the wiring harness' back to the EEC from a '88 5.0 Bird/Coug. A '86 or '87 can be used but the connectors are slightly different. IF you are going to have a large cam, aftermarket heads, etc then plan a '89-'93 Mustang Mass Air EEC air meter and conversion harness..

If you plan on Mass Air a Mustang main harness can be used but it will require some modifications..
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