Re: Rebuild 1995 46RH using 48RE improvements?
[Re: 360view]
#2953049
08/12/21 07:17 AM
08/12/21 07:17 AM
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Joined: Dec 2009
Posts: 20,640 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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The 48RE was a diesel only trans. If you talking '95 diesel then it would be a 47RH. If the 95 is a gas motor than it is a 46RH. Diesel torque converters are all to themselves and can't be used in a V8 gas application. Things you can't use from the 48 are, the torque converter, valvebody, trans and O/D cases, the rear band assembly, the output shaft and possibly a few other pieces but you can get most of the guts in there.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion. 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Rebuild 1995 46RH using 48RE improvements?
[Re: Guitar Jones]
#2953104
08/12/21 11:43 AM
08/12/21 11:43 AM
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Joined: Jan 2010
Posts: 667 Los Osos, Ca
CKessel
mopar
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mopar
Joined: Jan 2010
Posts: 667
Los Osos, Ca
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The 47/48's had more frictions in the drums and o/d unit. I had a 48/47 front drum added to my 94 46rh to up the friction count and also added in the needed pieces on the o/d unit to increase the friction count there. Put a 3.8 kd lever in too. Got ahold of an aftermarket converter to go behind the 5.9 gas that was going to get a 4" crank. Added the 48 pan too with a spacer for the filter. Had already done a shift kit several years before. The 46's also had different planetaries depending on what engine was in front of it. My 5.9 had 5 I believe. May have been 4. The 5.2 had one less, 3.9 one less than the 5.2. V10 and diesel had 6.
Carl Kessel
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Re: Rebuild 1995 46RH using 48RE improvements?
[Re: Moparite]
#2953691
08/14/21 12:10 PM
08/14/21 12:10 PM
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Joined: Mar 2011
Posts: 3,076 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,076
Michigan
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All front and rear clutch drums are the same diameter - regardless if 727/46/47/48. What you may have heard is the L/R drum differs in diameter between these units. That would be true. The “barrel” - the main case is the same between these units in regards to diameter.
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Re: Rebuild 1995 46RH using 48RE improvements?
[Re: A727Tflite]
#2953857
08/14/21 08:30 PM
08/14/21 08:30 PM
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Joined: Dec 2009
Posts: 20,640 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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If going behind a gas engine you really don’t need all the geartrain upgrades.
Make sure you have it built correctly, good clutch and band materials, call it good.
The 48RE was used in the diesel and V-10 SRT truck.
I never saw any SRT units go bad, they were overkill for that application.
For sustained highway use in OD, the overdrive unit takes the beating - and the best you can do for a gas unit built before 2000 is use ATF + 4.
ATF + 3 was an improvement over Dexron and such but 4 is light years ahead of all of them. We started using it around 2000 in the trucks And it solved s lot of issues. You are correct, the 48RE was also used behind the truck cast iron V10, but those torque converters can't be used behind a V8 either as well as the SRT 10 converters. They aren't very common so I didn't mention them.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion. 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Rebuild 1995 46RH using 48RE improvements?
[Re: Guitar Jones]
#2953895
08/14/21 10:38 PM
08/14/21 10:38 PM
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Joined: Mar 2011
Posts: 3,076 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,076
Michigan
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If going behind a gas engine you really don’t need all the geartrain upgrades.
Make sure you have it built correctly, good clutch and band materials, call it good.
The 48RE was used in the diesel and V-10 SRT truck.
I never saw any SRT units go bad, they were overkill for that application.
For sustained highway use in OD, the overdrive unit takes the beating - and the best you can do for a gas unit built before 2000 is use ATF + 4.
ATF + 3 was an improvement over Dexron and such but 4 is light years ahead of all of them. We started using it around 2000 in the trucks And it solved s lot of issues. You are correct, the 48RE was also used behind the truck cast iron V10, but those torque converters can't be used behind a V8 either as well as the SRT 10 converters. They aren't very common so I didn't mention them. Agreed
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