47RE Trans /Converter Question
 

which is more prone to slippage under heavy torque? the converter locked up or the 3 gear/od clutch packs... my truck has mild mods but I noticed that on the freeway coming off of a 55 zone getting on it at 1400 rpm at 10PSI it will shoot up to 1800 rpm for about half a second... my first thought is the converter because this transmission dosent even have 10k on it yet and it was built right with the upgraded 3rd & 4th clutch packs with extra frictions & steels, but it has a stock converter, I think I am going to baby it til I can get a Goerend 3 disc converter, opinions?

If the trans is fresh and the VB is built up then I would say the stock converter is most likley your issue. It can't really handle much, and a 12v at the low end can really make some torque! Be nice to it until the new converter. How come the trans got rebuilt but no new converter?

didn't have the extra $2k plus it was just to get the truck back on the road until a fully built trans could be had, I figured it would have lasted a little bit longer but I suspect it has been slipping a little bit for a while, when the converter is unlocked and full throttle is given the truck moves out like it normally should and doesn't seem to slip, revs go to 2500 while the truck gains speed then when it goes to 2800 it shifts and starts it all over again

$2k! Wow. Someone tried to pull one over on ya.

Well, I guess you are saving your luch money for the rest of the transmission. What all did you have done?

Just a bit off the topic, but how come you have a 47RE in a 12V??? I thought due to the required electronic management the 12V was not able to have a RE but must use the 47RH? - can someone shed some light on this for me?

Thx,
Tom

The 47RH was used in 94-95, the 47RE was used 96-03 then in came the 48RE. Although there are some electronic requirements, the 12V (96-98) did have a TPS and the other associated electronics to control the RE transmission.

THX!!!

Is there any way to convert a 94 to take on the 47RE or 48RE at a reasonable price?

Sure, get a used ECM and transmission out of a 96 - 98 truck. Not sure why you would want to tho? Unless your wanting to use a TC lock-up box or something like the BD Torq/Auto-loc and even then you can accomplish the same thing with a 3 position switch and some wiring on the RH.

was just an idea as the RH is shifting somewhat rough ...

Alto Eagle red clutches throughout the unit with the extra plates and steels, redline bands, and a transgo VB recalibration & shift kit thing, the input and output shafts were cryogenically treated (pissed away $100 I was told) and a bunch of little stuff that added up to about $2900, at least the guy is offering my money back on the converter so thats $225, I just gotta baby this thing for about another month until I have the $800 for a 3 disc converter.