school me: 47re/47rh

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06-20-2006, 02:58 PM

tacoma

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school me: 47re/47rh

what is the difference between these two transmissions????

sorry for the 2nd gen? question but this tranny is on a sort of... Frankenstein'd setup LOL

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06-20-2006, 03:03 PM

JD730

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As far as I know the front section is pretty much the same.

Valve body is different, 47RH being hydraulically controlled and 47RE being electronically controlled.
Overdrive section is different and shorter on a 47RE, 47RE has no governer in it like the 47RH has. Only a speed sensor.

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06-20-2006, 03:05 PM

tacoma

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ahh, cool. Then I do in fact have an RE... with a sweet homebrew switch box for the lockup! This is gonna rock once I get installed.

Thanks!

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06-20-2006, 04:14 PM

JD730

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What are you going to install it in?

One more thing, the 47RH only has 3 pins for controlling lockup and overdrive.
The 47RE has something like 8 or 10 pins, I can't recall right now. And a governer pressure transducer and governer pressure selinoid.

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06-20-2006, 04:37 PM

txs

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If it's an 47re you will need to rig up some kind of controller to use it in a first gen truck, like jd said, there's no hydraulic governor in the re trannies, the computer controlls the shifts.

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06-21-2006, 03:41 PM

tacoma

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This is going back in a Chevy. Guy had installed it about 5yrs ago. I'll have to check those pins.... he rigged a box with 3 switches, one for 1st, OD, and lockup... but I'm not sure if it was a simple three wire deal or not, I wrapped it up and haven't unwrapped the tranny yet.

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