chevellechad

iTrader: (6)

I have a 5.7 LS1 out of a camaro with the aluminum block. 2001 or so.

I am trying to track down and buy the wiring harness and computer.

Does it matter what year, 98-02, wiring harness I buy? I see a 98 harness on ebay for way cheaper than the other years. Makes me wonder if 98 is not a recommended year?

I am installing the engine in my 66 chevelle

Thank You for your help.

the_merv

iTrader: (88)

The 1999-02 are more sought after cause the PCM's tune easier and you have more tuning capabilities.

The 1998's can be re-pinned pretty easily tho..just takes time.

salemetro

iTrader: (5)

You might also consider just getting a harness from a truck....they're usually much cheaper, and you're going to have to "work over" the harness anyway. You'll need to change the injector pigtails out, but no biggie there. You're basically making your own harness, but it's not that difficult. It's more time-consuming than anything else, but a side-benefit is that you'll know the entire harness by heart when you're done....makes any future troubleshooting much easier.

Tongboy

what salemetro said - truck harness is the way to go - much easier to sort out and MUCH better availability

the_merv

iTrader: (88)

Depends on what you are doing..I've used all F-body Harnesses.

psiconversion

iTrader: (5)

Keep in mind MAF connector will be different along with the injector pigtails stated above. Also, MAP is in a different location. I personally think the F-body harness lays nicer than the trucks do, but then again I think PSI harnesses are your best choice, but Im a little biased.

Jon
PSI

salemetro

iTrader: (5)

Well played, Sir!

the_merv

iTrader: (88)

Wiring in the different connectors aswell as moving connectors are pretty easy..it's not brain surgery to cut and re-tape some wiring..

salemetro

iTrader: (5)

That's what I was alluding to. If he wants an "Fbody harness", it would not take very much to re-pin the bulkheads and make one out of the truck harness. The only thing it will really "cost extra" is more time and more solder.

the_merv

iTrader: (88)

I've wired all my own stuff..its pretty easy really.

chevellechad

iTrader: (6)

Any truck harness? 5.3, 4.8 etc?

I am not planning anything to radical. I basically have the 5.7 short block with cathedral heads and need to track down everything else. Everyone on craigslist seems to want big bucks for camaro stuff. So truck sounds like a good plan. Can I use all the pulleys, brackets and valve covers from a truck motor too?

the_merv

iTrader: (88)

You can use whatever will fit, just make sure its all the same. Truck accessories have to stay with truck..etc..

If you are savy on wiring then use the truck one and make it happen.

fmowry

iTrader: (14)

If you want a cheap harness and are willing to pull the tape, repin, and add a few connectors:

http://www.ebay.com/itm/LS1-Swap-Eng...94547003275285

Hy82e

iTrader: (14)

So using, let's say a '04 6.0l escalade harness. One issue would be to delete the dbw. I assume that means removing those wires and some re-pining (noob alert* "is re-pining simply changing the location of the wires on the connectors to the pcm?)
So in doing that will I be able to use a 411 pcm?
Are there any benefits to seeking out a 411 pcm over maybe a 243 pcm, or do all issues get resolved with the tune since I'm staying dbc?

psiconversion

iTrader: (5)

I would recommend the 411 as they are compatible with both DBC and DBW and are very common PCMs which can be had cheap. You will have to repin the '04 harness (yes, that means relocating pins in the pcm connectors), and obtain the following items: IAC Connector, TPS Connector, Injector Connectors (if switching to EV1 Car stuff), relocate MAP, PCM retainers (Green to Red). Dont forget that the O2s are not PWM in the red/blue harness, so the heaters will have to be grounded.

Jon
PSI