[mr69er]

just got an 87 IROC Z28 TPI engine with complete OEM engine wire harness. I cannot find the wiring schematic for it. I would really like to fire it up, but afraid to fry the ECM if I connect hot leads to wrong connection . Does anyone have a wiring schematic, or know where I can get a copy so I can wire it to get it running.

[Steiner]

www.thirdgen.org should have lots of info.

[Screamincamaro]

Here is a link with the pinout diagram on the 165 ecm (MAF).

http://www.eecis.udel.edu/~davis/z28...165v8tpi-6.jpg

Here is a link to wiring harness diagrams.

http://www.thirdgen.org/techboard/el...-diagrams.html

I'm in the process of doing the same swap into my 67 camaro. I'm swapping an 87 IROC engine/700r4 trans but I'm using a painless harness for the conversion. I'm also converting mine to the 730 ecm (MAP) as part of the process.

[Screamincamaro]

What are you using for throttle linkage?

[BobKovacs]

Stupid question, maybe, but why are you guys putting TPI motors in your cars? They were pretty weak horsepower-wise, and there's far better technology out there now with all the LS-series engines that are on the market now. Unless you're doing some serious upgrades to boost the performance, you're not getting much bang for your buck, IMO. They were all the rage 10-15 years ago because the TPI setup looked neat in an older ride, but that was about it.

[Screamincamaro]

Stupid answer, maybe, but I had a complete TPI engine in the garage. It was a lot cheaper to rebuild vs. buying an LSX and doing a conversion. Beyond that I wasn't looking to pop wheelies, the TPI looks cool, they make enough torque to still make it a fun ride, it will be reliable, and I will have extra $$ left over to put into other things on the car that need attention. It was a pretty easy decision for me.

[BobKovacs]

Nope- good answer if you've got one hanging around. Use what you've got.

[Prosconst]

I'm in the middle of doing the same thing, honestly I like the look of tpi much better and im not one to do what everyone else is doing anyways. Besides I don't plan to race it I'm just looking for a street car with decent performance and gas mileage. To the OP I purchased a tpi wiring kit from Painless, looks easy enough but I haven't fired mine up yet either. Good luck