1stGen.org

by **GPSMatt** » Fri Feb 01, 2008 4:00 am

been looking at trannys for my swap decided not to go manual and from wha i have heard the 47rh doesnt have that much electronic sthi just need to wire up a switch for the lock up?

by **JD730** » Fri Feb 01, 2008 6:05 am

The 47RH has gear 1-3 hydraulically controlled by a governor and OD and lockup are controlled by 2 solenoids. I use 2 switches to control mine, overdrive is still hooked up to the PCM but I manually control it most of the time anyway.

Here's a write up from DTR about putting a 47RH in a 1st gen.
http://www.dieseltruckresource.com/dev/showthread.php?t=114702

by **KTA** » Fri Feb 01, 2008 6:29 am

Or if you went with a manual valve body you could use a 47RE and then have access to a lot more performance parts, but unless you are planning on over 500rwhp someday the 47RH should be fine.

by **JD730** » Fri Feb 01, 2008 6:41 am

KTA wrote:Or if you went with a manual valve body you could use a 47RE and then have access to a lot more performance parts, but unless you are planning on over 500rwhp someday the 47RH should be fine.

Which parts are you referring to? There is a billet output shaft available for the RH now.

by **KTA** » Fri Feb 01, 2008 6:43 am

OOPS I didn't know they had finally started making those.......well then there is really no diffrence other than tranny length. The RE is quite a bit shorter than the RH.

by **cummins king** » Fri Feb 01, 2008 6:48 am

off to find a tranny

(did that come out right) :lol:

by **PToombs** » Fri Feb 01, 2008 4:33 pm

cummins king wrote:off to find a tranny

(did that come out right)

As long as you are talking truck parts it did! :lol:

If not, we don't wanna know! :safe:

by **cummins king** » Fri Feb 01, 2008 5:10 pm

truck parts alright!
has anybody done a swap, how hard is it to do, is it just better to biuld a strong 518

by **JD730** » Sun Feb 03, 2008 8:09 am

cummins king wrote:truck parts alright!
has anybody done a swap, how hard is it to do, is it just better to biuld a strong 518

Seriously, did you even open the link I posted????

Much better with the 47RH/RE. You get a lockup converter, more cost, but its worth it. The biggest difference between a 47 and an A518 is the front case. The 518 uses the old single wrap 1st/reverse band from the 727, I know 1 person that had trouble keeping a reverse band in one and the shop wound up using a 47 case. The 47's use a double wrap design that covers the whole rear drum. Outside the differences are obvious because the 47's have webbed reenforcement around the rear servo.

And of course one is lockup and the other is not, the difference there is in the front pump(actually the reaction shaft support is the difference), the input shaft and the valve body. It is possible to convert an A518 to lockup, but I have not done so because of the abundance of 47's I seem to have.

And most of the hard parts between the A518 and the 47's can be interchanged with the later 47RE's parts being stronger than 518 parts. Like 5 pinion steel front planet vs 4 pinion aluminum front plate.

Anybody confused yet????

by **cummins king** » Sun Feb 03, 2008 11:21 am

i did check the site out, the only problemis finding a 47rh, i have checked with no luck, maby your want to sell me one since you have an "abundance" of them

by **JD730** » Mon Feb 04, 2008 6:25 am

cummins king wrote:i did check the site out, the only problemis finding a 47rh, i have checked with no luck, maby your want to sell me one since you have an "abundance" of them

Right, I have 3 of them. 1 is in a truck, another 1 is going to be in a truck soon. And the last one is all apart, I'll probably wind up throwing it back together so the parts aren't just laying around and keep it around for a spare.

1 actually started life out as a 47RE, so don't limit your search to just RH's. I used to overdrive off my 518, plus some other parts to change the RE into a RH.

by **GPSMatt** » Tue Mar 04, 2008 2:58 pm

havnt looked back on this post in a while. Whats the diff between the re/rh and who makes the rh shafts? trans is going in a 85 crew cab f350 that is going to be setup for drag racing and its a prety heavy truck.

by **GO OVRIT** » Tue Mar 04, 2008 3:27 pm

KTA wrote:Well then there is really no diffrence other than tranny length. The RE is quite a bit shorter than the RH.

So which one is closer to the a518 in length?

by **JD730** » Tue Mar 04, 2008 4:14 pm

GO OVRIT wrote:
KTA wrote:Well then there is really no diffrence other than tranny length. The RE is quite a bit shorter than the RH.

So which one is closer to the a518 in length?

The 47RH is the exact same length as the A518. The difference is in the engine adapter. The 47RH's adapter is about an inch thicker to make room for the lockup converter.

by **JD730** » Tue Mar 04, 2008 4:20 pm

GPSMatt wrote:havnt looked back on this post in a while. Whats the diff between the re/rh and who makes the rh shafts? trans is going in a 85 crew cab f350 that is going to be setup for drag racing and its a prety heavy truck.

I think these guys had one or know where to get one.
http://www.transmissionsone.com/

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