CJHeap

I have sourced a 01 5.3L vortec for my Jeep but I need a wiring harness an ECU and 2 coils. I would like for this to be a stand alone engine since I am using a NV4500 5 speed.

Will an 01 6.0l harness work? I have access to one of them and the ECU?

Thanks in advance.

Nine Ball

iTrader: (38)

Your truck 5.3L engine will also operate with an LS1 engine harness. I would opt for a car PCM, as there are far more shops out there that can perform custom tuning on the car PCMs, but only a few that handle truck PCM tuning.

Since you are doing an engine swap, that 6.0L harness will have a ton of wires that aren't really necessary for your Jeep. It will work however, but you might consider sending it off to someone like Speartech ( www.SpearTech.com ) to have them clean it up a bit and modify it for an easier conversion.

You could also purchase a Painless LS1 harness, and source a 1998 f-body PCM to operate that engine. That is the setup I'm using on my '69

CJHeap

Thanks for the info. I will definately look at this option. So far, the best deal I have found is the Howell harness for $500 and their re programmed 98 PCM for $200. That ends up being less than it would cost me to have the stock units re-done.

I am also in Houston and would like to take a look at your setup.

Shawn

Nine Ball

iTrader: (38)

Haven't gotten to the engine wiring phase on my Camaro, might be attempting it this week. I do have the harness (new in box still) and the PCM out for custom programming at MTI. I've got some sheetmetal work to finish on the tranny tunnel before I get into wiring (welding involved).

Tony

Speartech

iTrader: (14)

Not without modification. The truck engines use a completely different design of injector. An LS1 harness would need the injector connectors cut off and new terminals and connectors installed.

The MAF sensor on a truck engine is also different from an F-body harness (5 pin vs. 3 pin). You would need to change that also.

The truck engine will also run a little better with the correct PCM and calibration as opposed to going back to the obscure 98 PCM with a 5.7 car calibration. With the correct programming, the 98 PCM can be set up to run the 5.3 nicely, IF the programmer takes the the time to change the proper parameters.

We are one of the few that have the full unlimited LS1 Edit license, so we can handle ALL LS1 applications, which includes 97-04 all car AND truck applications.

Speartech

iTrader: (14)

Just make sure you're getting everything you think you are getting for that price!