LS3 Wiring Harness, PCM, TCM

[ford396]

Help! I have been working on my build for just about 1 year. I have a stock LS3 with a 4L85 in a Ventura. I am wondering who is the go to company for wire harness, PCM, TCM. I am going to pull heads, change cam, springs, and build custom headers.

I am assuming that it would be best to get the modules from the same person as the harness? Can someone program my modules to be very close to the selected camshaft?

I want to change the cam to get a little bit of the rough idle, thump. I also want to get 500 - 550 flywheel horsepower that is drivable at 2000 rpm and get good fuel economy. Am I asking for too much? If not, I am looking for camshaft recommendations as well. Is it worth it too change pistons too get more valve relief, or is this not required at my power goal?

Any input on camshaft, company for modules and harness would be appreciated.



Thank you

Bob

[Schwartz Performance]

Speartech and PSI are good.
We use the Baumann Electronics US shift module on the transmissions though, rather than using something like stock. It's a standalone unit that you can tune the shift points with on a laptop, it's easy to use.

500-520hp is possible, but any more than that will sacrifice your drive-ability.
We did a 550hp LS3 build once with forged internals and a big cam.. It didn't have enough torque down low and wasn't too fun to drive. Switched to an LS7 cam and it was way better, the LS7 cams will put you around 500hp and they can be had for about $130. The LS9 cam is the same specs. You'll need to change valve springs for the higher lift too.

If you still want more hp like the 550hp, then I'd recommend porting your heads and changing the intake to a FAST or the new MSD.

-Dale

[ford396]

Thank you for your reply. I do not want to sacrifice drivability for the last 30hp. Not wrapped up in numbers. is the Baumann module compatible with a GM PCM? Do I need special software to program shift points, pressure, VSS?

Thank you

[ford396]

Does the PCM need to know vehicle speed and gear selected from the trans range sensor, in order to control idle speed and torque output? Does the factory PCM communicate with the TCM? I was just on looking at the Baumann Quick 1 and it appears to be a stand alone controller. Will I be able to pull VSS and Trans Range from this for my Dakota Digital gauges?

[BP Automotive]

Does the PCM need to know vehicle speed and gear selected from the trans range sensor, in order to control idle speed and torque output? Does the factory PCM communicate with the TCM? I was just on looking at the Baumann Quick 1 and it appears to be a stand alone controller. Will I be able to pull VSS and Trans Range from this for my Dakota Digital gauges?

Feel free to give us a call tomorrow. I will be glad to help you with your questions! We can provide you with an entire kit! Here is a link to our facebook page. We actually just posted a kit which is exactly like what you would need. This customer opted for the braided loom. 270-805-1777. Here is the link to our facebook page, and our website is in our signature!

https://www.facebook.com/permalink.p...53192731414826

Bill

[analyte]

Feel free to give us a call tomorrow. I will be glad to help you with your questions! We can provide you with an entire kit! Here is a link to our facebook page. We actually just posted a kit which is exactly like what you would need. This customer opted for the braided loom. 270-805-1777. Here is the link to our facebook page, and our website is in our signature!

https://www.facebook.com/permalink.p...53192731414826

Bill

I've got a harness myself from BP that he custom fitted to the parts I needed, i.e. injectors, MAF, TB, etc.

The harness is beautiful and all the connectors are labeled for easy hookup. And it's not even his "show car" harness which is even nicer!!

Kerry