Ready to take my trans to the next level...thoughts?

TAftw

New member
Joined
Dec 18, 2012
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I've been reading a lot on here about the 47RH and many of your guys' tricks to getting them performing well. I finally shelled out the money for a decent rebuild and now currently have:

Transgo Diesel TFOD kit (in a NEW valve body)
Kolene steels
Red Eagle clutches throughout
Daaco billet converter, 1200 stall
Sonnax super servo kit w/billet servo covers
High energy bands
HD band strut
HD apply lever
Teflon governor
Deleted checkball
Fully synthetic fluid with a deep pan

Probably a while ton more stuff I can't even remember. I've built it in small steps and really can't recall everything I've done to it.

The way it sits now I think the only thing I can do is add billet shafts and a secondary cooler.


A few questions arise from this:

1) Is there a trick to squeezing more clutches into the direct drum? That drum is applied in every gear except reverse, and I find it crazy that there are only 4 clutches and 3 steels in it (IIRC). I've read a lot on the forum, but am looking for a definitive answer as to if a drum out of a different tranny will allow me to gain some space for more clutches.

2) My converter is pretty nice, lockup hits hard due to it being a big single, yet I am stuck with the 1200 stall. For my setup it works well, but I plan on getting twins and will probably want to change it. Aside from Monster Pump Mike, is there anyone else who makes a two piece rebuildable converter for these trucks? If not, how does one get a hold of Mike?

3) Obviously, a billet input shaft is a must. I've really never heard of the intermediate or output shafts failing, so is it really necessary to add these? The truck will eventually become a hot street truck, no sled pulling, and some minor towing.


Any help would be great. I have searched and read quite a bit, so please be easy :thankyou2:.
 
how harsh are the shifts on your truck and what line pressure are you running?

sonnax told me the only thing i shouldnt mix with the tfodhd2 was a super servo.. said just do the cover. i did the transgo kit and raised the line pressure quite a bit but its shifting really soft even at 130psi in the accumulator and 125 in the front servo. my convertor clutch is failing so i assume thats part of it.
 
The way it sits now I think the only thing I can do is add billet shafts and a secondary cooler.

not to rain on your parade, but there a quite a few bits in these that are not as good as they could be. you said you read, but I doubt you did enough because there are tons of discussions on what works best for these 47's.

intermediates and outputs don't break? since when?

do some digging, then ask more.
 
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