I've been doing my homework on my dd 4.8 rcsb. I've got ls6 cam and have long tubes on the way. The next step I've looked into is spraying my truck. My biggest worry is that the 4l60 won't hold up to a 100 shot. I've seen so many people have different results that I don't know what to believe. I don't plan on spraying very often so can tell me how the tranny will hold up please.

 

it'll hold up to a 100 shot, especially if you aren't spraying it all the time and beating it to death. I have the same setup, 4.8L rcsp LT's with LS6 cam and spray and sprayed the hell out of it and beat the **** out of it and the stock trans held up fine.

 

Did you have any problems with slipping or any trouble with the rear end?

 

GO for it, these 60es are ticking time bombs but if you take care of them and dont beat on them ALL the time itll be ok. My truck has FBO,stall,gears, 35s and i also tow a 9,000+ boat and shes held up just fine so far (knock on wood). 87,000 Hard but taking care of miles.

 

I didn't have any issues with the rear end or slipping. Maybe it's the lower power level of the 4.8 to start with matched with the lighter weight of the RCSB that does better with the 60E but it held up great for me with the same scenario that you're describing.

 

I'd put a shift kit in it (like the hd2) and let it eat.

 

Vette servo big trans cooler and shift kit.

 

Oh yes I can taste it now

 

forgot to mention that I did have a good cooler and vette servo in that trans but no shift kit. I agree with the previous two posters though, those two things would be great additions to the trans to help it out a ton.

 

The problem with nitrous oxide is that there is no way for the PCM to know to compensate for the additional torque with additional line pressure because the nitrous doesn't change MAS, MAP, or TPS.
If it were me I'd probably do it by first finding out what throttle position the nitrous switch activates at. Then, take that number, subtract 5, for example 90% TPS, and increase line pressure from there to 100% TPS. The band takes a pretty good beating and your servo helps with that, but the 3-4 clutch pack is the weak link. It is critical to give the 2-3 shift enough line pressure that it never slips, but also not so much it jolts. Slipping that shift just once is enough to warp the plates and start the process of self-destruction.