Making a 518 lockup

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Re: Making a 518 lockup

Postby txs » Wed Mar 18, 2015 6:42 am

For lockup control they sell preset and adjustable pressure switches, the adjustable would let you dial it in. The governor pressure port is 1/8 pipe in the front flange of the OD unit on the passenger side iirc. I would also wire a toggle switch to bypass the auto switch, on long grades it would be nice to have the tranny in direct and still have lockup. I intend to wire up bypass toggle switch in my 98, when pulling long grades with load when you hit the button to take it out of overdrive it also drops out of lockup and the temp gauge immediately starts climbing.
93 w250 6 speed 4" exhaust, caution, work truck, she's no beauty. building 1 ton dually 4x4, dana 80, 48rh, 205 Scratch the one ton, bought frt. dually 4x4 98 12 valve with the tiny rear doors. rides so much better than the 93.
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Re: Making a 518 lockup

Postby txs » Wed Mar 18, 2015 6:46 am

Caleb, that pic you posted is actually a 904-a500 front pump, the 727-46-47 reaction shaft support is smaller diameter than the pump housing as opposed to the 904 type that is the same od as the pump.
93 w250 6 speed 4" exhaust, caution, work truck, she's no beauty. building 1 ton dually 4x4, dana 80, 48rh, 205 Scratch the one ton, bought frt. dually 4x4 98 12 valve with the tiny rear doors. rides so much better than the 93.
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Re: Making a 518 lockup

Postby dazedandconfused » Thu Jul 30, 2015 1:38 pm

Does anyone know if the 518/and 47rh overdrive housings are interchangeable? I want to make my 4x4 47rh 2wd and I have a 2wd 518 already.
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: Making a 518 lockup

Postby cmann250 » Thu Jul 30, 2015 4:22 pm

I'm 99% sure the housings are the same. The guts are different, assuming you have the assembly. The 47rh uses a better clutch pack if I recall correctly.
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Re: Making a 518 lockup

Postby ellis93 » Thu Jul 30, 2015 6:30 pm

^^^what Caleb said and it's only a few extra clutches.
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: Making a 518 lockup

Postby dazedandconfused » Thu Jul 30, 2015 7:14 pm

Good deal.
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: Making a 518 lockup

Postby oldestof11 » Fri Jul 31, 2015 8:38 am

I can try to find it again but on CompD, someone took a 47RE and swapped a A518 OD housing on to make a 47RH.
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93 D250~ Mismatch of cheap parts, trying to look fast going slow
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Re: Making a 518 lockup

Postby dazedandconfused » Fri Jul 31, 2015 12:45 pm

oldestof11 wrote:I can try to find it again but on CompD, someone took a 47RE and swapped a A518 OD housing on to make a 47RH.


If you can find it that would be great. I searched with no luck.
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Re: Making a 518 lockup

Postby cmann250 » Fri Jul 31, 2015 7:28 pm

The RE has no provision for governor tubes and the vb would be all wrong.
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Re: Making a 518 lockup

Postby oldestof11 » Sat Aug 01, 2015 9:21 am

Never mind, it was a manual VB build.
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Re: Making a 518 lockup

Postby dazedandconfused » Wed Jul 06, 2016 3:46 pm

May have to undertake this sooner then I planned.
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Re: Making a 518 lockup

Postby ellis93 » Wed Jul 06, 2016 7:53 pm

Poor Andy! All those projects.... :lol:
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: Making a 518 lockup

Postby txs » Mon Jul 11, 2016 7:31 am

The case is the same except for the hole where the vb electical connector goes through, you would have to change out the rear support if it doesn't have the holes for the governor tubes. Use the rh valve body and put the re solenoid pack on it. Use the re connector plug and wire up the three wires that are applicable. Even the A-500 shared the o/d housing and output shaft. Only difference in any of the o/d units in a given model year or even between engineering changes was the internals.
93 w250 6 speed 4" exhaust, caution, work truck, she's no beauty. building 1 ton dually 4x4, dana 80, 48rh, 205 Scratch the one ton, bought frt. dually 4x4 98 12 valve with the tiny rear doors. rides so much better than the 93.
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Re: Making a 518 lockup

Postby DodgeFreak » Mon Jul 11, 2016 1:16 pm

I also thought the RE cases were the same from what I could tell when I had them apart the only difference was the support/od piston had the holes blocked off. I didn't have time to verify this weekend. I'm planning to do Just what txs said and run an re case with the 518 tail and the re solenoids. you should be able to get the truck end of the plug from a junkyard for cheap.
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Re: Making a 518 lockup

Postby txs » Tue Jul 12, 2016 8:53 am

And the gasser connector is the same so bout any junkyard should have one.
93 w250 6 speed 4" exhaust, caution, work truck, she's no beauty. building 1 ton dually 4x4, dana 80, 48rh, 205 Scratch the one ton, bought frt. dually 4x4 98 12 valve with the tiny rear doors. rides so much better than the 93.
txs
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