WTB engine wiring harness '91 Z28 Speed Density 5.7L Automatic
10-05-2010, 12:15 PM
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Car: '88 IROC-Z / '91 Z28 / '91 GTA
Engine: LT4 Hot Cam 305 / L98 355 / MR 383
Transmission: 5-spd / 700R4 / 700R4
Axle/Gears: 3:45 / 3:23 / 3:23
WTB engine wiring harness '91 Z28 Speed Density 5.7L Automatic
I am looking for an engine wiring harness for a '91 Z28 Speed Density. The car is a 5.7L/350 Automatic (with A/C if that matters). I need the entire harness from the ecm out through the firewall and throughout the engine bay. Let me know what you've got and how much. Thanks for your time.
10-30-2010, 11:36 AM
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Car: '88 IROC-Z / '91 Z28 / '91 GTA
Engine: LT4 Hot Cam 305 / L98 355 / MR 383
Transmission: 5-spd / 700R4 / 700R4
Axle/Gears: 3:45 / 3:23 / 3:23
Re: WTB engine wiring harness '91 Z28 Speed Density 5.7L Automatic
still need this!!
10-31-2010, 11:17 AM
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Re: WTB engine wiring harness '91 Z28 Speed Density 5.7L Automatic
I have a speed density harness out of a 92 with a/c and automatic, which should be the same as a 91. It is complete save for a couple of sensor connectors. The bulkhead, ecm, and main harness interface connectors are all there as well as relays. Your price: $100 + shipping.
10-31-2010, 01:24 PM
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Car: '88 IROC-Z / '91 Z28 / '91 GTA
Engine: LT4 Hot Cam 305 / L98 355 / MR 383
Transmission: 5-spd / 700R4 / 700R4
Axle/Gears: 3:45 / 3:23 / 3:23
Re: WTB engine wiring harness '91 Z28 Speed Density 5.7L Automatic
ok which sensor connectors are missing?
10-31-2010, 02:53 PM
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Re: WTB engine wiring harness '91 Z28 Speed Density 5.7L Automatic
The coolant temperature sensor connector is missing and it looks like two ground lugs are missing, I'm assuming for the fan circuit as they are in that vicinity. The harness includes the fuel pump and fan relays along with the firewall bracket. Other than the CTS and what I think are two ground lugs it is in pretty good shape.
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