Did you fix the throttle body issue?

 

Not yet. I installed the ls2 throttle body again and feathered the throttle for a while after I started the truck (not letting it idle) and then let it idle and it idled fine. Took it down the road, did perfect, even at WOT. Drove it for about 2 days and then it all of the sudden started messing up again and I could not get the system to relearn it. I had the tune adjusted so it would not go into rep mode but it still would not run right. Currently have ls3 tb on and it runs fine but at WOT, at the top of the rpms before it shifts, the throttle will just cut out, which I assume to be the throttle body shutting, as it is not related to traction control. The truck use to go into rep mode in that situation but now, since the tune was adjust, it does not go into rep mode but I think the throttle body is being sucked shut.

After I install the motor, I am having a performance shop break the engine in on a dyno and tune the truck. I am going to ask the tuner about it and see if they can get the LS2 tb to work properly bc it did fine for the day or 2 I drove with it. Hopefully it will be fixed then.

 

Need some torque converter suggestions. Cam was specd with intent of keeping stock converter but changed my kind. Specs are 218/236 .612/.612 116+4. Truck is driven everyday and I tow occasionally. Want it drivable and reliable. Circle D suggested their "GM 265MM PRO SERIES 6L80 TORQUE CONVERTER" with triple disk upgrade. I'm sure I do not need a high stall speed for my set up, maybe 2500-2700? What do y'all suggest?

 

I run a yank triple disk 3200 stall in my 4l80e. Easily doable. Kinda forget its even stalled at 3200. I don't daily mine but I do plan on towing a motorcycle trailer with mine in the future.

 

the 265mm will be a good unit for you and I agree you want it tight. With the small cam and relatively big cubes you dont need a ton of stall speed. This thing will be a monster down low.

 

 

6l80e? Which 2600 did you go with?

 

 

 

I don't have a lot of knowledge or back ground with auto trans, but my 4l80 in my truck has a Hughes 3000k single disk converter and drives smooth around town. Also, my 6l90 in my Cts-v has a stock converter with trans tuning only and has been holding 650 to the wheels for 30k miles but it's also lighter than your truck and isn't towing anything.