Time to rebuild or replace an A518

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Time to rebuild or replace an A518

Postby gassplant » Mon Sep 17, 2018 10:15 pm

I have a 1992 D350 and the automatic transmission is slipping. I don’t know whether to rebuild or replace it. I want to stay with an automatic. What the difference between a stage 1 and 2? Is there any other automatic transmissions that will work? Thanks
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Re: Time to rebuild or replace an A518

Postby Donkey Kong » Tue Sep 18, 2018 3:19 pm

What do you plan to do with the truck? A properly built A518 will go a long way, and its cheaper than converting to a 47RH.
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Re: Time to rebuild or replace an A518

Postby gassplant » Wed Sep 19, 2018 10:55 am

Daily driver and pull a fifth wheel. Camper sometime in the future.
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Re: Time to rebuild or replace an A518

Postby dazedandconfused » Wed Sep 19, 2018 6:16 pm

Upgrade to a 47rh you will be much happier.
1983 Dodge D150 that has been repowered with a 93 Cummins/518 running gear AKA The Ugly Duck! I would much rather build them then buy them.[
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Re: Time to rebuild or replace an A518

Postby thrashingcows » Wed Sep 19, 2018 7:12 pm

Just know that there is a bit of extra work and expense with going 47RH, different engine plate adapter and tranny mount/cross member locations, and wring for the lock up and OD, unless you spend some $$$ on a controller assembly.

Personally I would spend some good money on a low stall converter and go with a good high end rebuild, and be money ahead. ;)
1984/93 Dodge Crewcab, W350, 1 Ton SRW, long box, 330K Km's, M&H spacer, 366 spring, fuel pin to deep side, 14cm housing, Piston LP, PS IC, Isspro Boost, Pyro and tach, NV4500, 29 spline NP205, 3.54's.


Check out the build....http://www.dieseltruckresource.com/dev/ ... 05923.html
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Re: Time to rebuild or replace an A518

Postby dazedandconfused » Thu Sep 20, 2018 3:01 am

thrashingcows wrote:Personally I would spend some good money on a low stall converter and go with a good high end rebuild, and be money ahead. ;)


I just did this and wish I would have went with the 47rh.
1983 Dodge D150 that has been repowered with a 93 Cummins/518 running gear AKA The Ugly Duck! I would much rather build them then buy them.[
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Re: Time to rebuild or replace an A518

Postby Remps » Thu Sep 20, 2018 5:44 am

My "built" 47rh with a lower than stock stall feels like a slipping mess without the lockup working. Goes like a bat outa hell when you hammer it, but you can't feel the torque of the lower rpms at all. Even moderate acceleration requires shoving my foot into it some, whereas with the lockup, I could just hit the switch and take off, without giving it a bunch of throttle. Those that haven't drove a 1st gen with lock up don't know what you're missing. A second gen starter is required for the swap as well. Stock shift linkage will work, but will be twisted to the rear somewhat.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
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Re: Time to rebuild or replace an A518

Postby ellis93 » Thu Sep 20, 2018 11:47 am

You want the lockup unless you buy a custom (read made specifically for your truck 100%) converter. My vote would be for the 47rh.
93 D250 ,5 speed,4.11s,k&n autometer tach pyro trans boost guages,GDS 60mm h1c 14cm,honed 5x10,hplp/reg,1/8 timing,M+H M2 fuel pin, tims cooler tubz
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Re: Time to rebuild or replace an A518

Postby Donkey Kong » Thu Sep 20, 2018 7:23 pm

Agree 47RH is a better tranny. Maybe save some $ by pulling one from a wrecked 94-95 2nd gen? I would still get a built A518 and a nice TC.
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Re: Time to rebuild or replace an A518

Postby cougar » Sun Sep 23, 2018 9:19 am

viewtopic.php?f=3&t=17584 Read my write up, I'll be happy to answer any questions you might have. After working out the bugs I'm very happy with my conversion.
RIP 91.5 W250 5 speed. The great experiment.
92 W250 HD 47RH with Compushift. Upgraded H1C to 60/60/16, modified fuel pin, DAP 7X.010 injectors, 4" DE exhaust.
01 2500 "the work truck".
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