Anyone know who has one for sale or knows how to make one?

 

If they are as hard to find as a regular Speed Density harness, all I can do is wish you good luck

 

I have found some used ones and Casper Electronics sells reproductions ones (For 750+). So I am more looking for a used set.

 

Find an 87 FWD with a 3.8 in it.
It has the right ECM and all the sensors BUT the MAF are correct. Meaning you'll have all the right colors of wiring, and correct sensor connectors.
Then just cut and splice as necessary.

Then get the harness out of some later V6, to get extra lenghts of wire, and the later injector connectors. The earlier ones work OK, but the later are more moisture proof.

In the past I've found GN harnesses for $150, but they are few and far between.

 

Part number 1206932. Still available from GMpartsdirect.


Hey Grumpy: Is the firewall C100 connector pinout the same on the FWD harness? And also can I use the newer model FWD injector harness when I upgrade to 009s? Plug and play?

 

The ecm/efi harness is a dedicated harness, with just tie in's to the behind dash harness. While it goes thru a bulkhead, it's not actually a connector. I don't know what the connector C100 is.

There are several different injector harnesses, all with different connectors, weither those particular two interchange or not I can't tell you. You can use any port injector with the oem harness, it's in some cars that need the power supply wire redone when using Peak and Hold injectors, ie low impedance.