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Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: mlarky] #752554
September 19th 2019 2:11 am
September 19th 2019 2:11 am
Joined: Aug 2001
Posts: 12,034
Fircrest, WA
Reed Offline
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Reed  Offline
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Joined: Aug 2001
Posts: 12,034
Fircrest, WA
Originally Posted by mlarky
I still haven't figured out the drive shaft issue that still remains.


Grab the driveshaft out of the donor van and have it shortened and balanced. Shouldn't be more than $200. Once you have the drivetrain all installed, slide the front yoke of the donor driveshaft into the back of the trans until it is inserted the same amount it was in the donor van (maybe wrap a piece of tap around the snout of the yoke to see where it was before it is removed). Then measure the distance from the midddle of the front u-joint to the middle of the rear axle pinion yoke. Now take the donor driveshaft to a driveshaft shop and have them shorten it to the measurement between the yokes. Have them balance it, too.


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Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: Reed] #752557
September 19th 2019 7:55 am
September 19th 2019 7:55 am
Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
mlarky Offline OP
enthusiast
mlarky  Offline OP
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Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
Reed Thanks for the input. Others I have talked to have said the same, modify what I have. Plus I have Already been down that path on other projects. Back then I had the spare cash, the spare time to do it all, and usually those were more a Frankenstein vehicle, so a necessity. This is mainly a same year, make and model swap. Wheel base is different, therefore the shaft length is different. Trying to do this on a vary tight budget. Plan to pull the drive shaft, get sizes, and measurements. Compare what I have between the 2 vans. I do have a shop here that does drive shafts, and I will at least call for an estimate. Plan to look closely at all options. The most frugal way for me now, is the go to Pick N Pull find a shorty V8 with OD tranny van, check the measurements and hope I can do that with new U-joints and move on. PNP costs maybe $30 for a used driveshaft, new U-joints are about $30 for the good ones. Now that I can more easily afford afford. This weekend I start assessing what I have down to part numbers, sizes, needs, etc. See which AOD I actually have, rear end ratios, etc. The B350 is 1 ton, mine is 3/4 ton B250. All my research so far suggests that Except for the drive shaft length, suspension springs, the different engine and tranny, they use a share a ton of parts in common. Kinda why I was going down this path.

Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: mlarky] #752559
September 19th 2019 12:11 pm
September 19th 2019 12:11 pm
Joined: Aug 2001
Posts: 12,034
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
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Posts: 12,034
Fircrest, WA
To see which trans you have, look at the pan shape:

[Linked Image]

If both vans are the same model year, then, yeah, basically everything will interchange.


Windows- they're what make a van worth owning!
Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: mlarky] #752860
September 29th 2019 7:21 pm
September 29th 2019 7:21 pm
Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
mlarky Offline OP
enthusiast
mlarky  Offline OP
enthusiast
Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
Got the bumpers swapped last weekend. What a chore though! 1st stove bolt I loosened on the front bumper to the bracket rounded out. Ended up having the remove the bumpers with the brackets. On the front that was fairly easy. The rear bolts were a bear...There was not much room to work with on a few of the bolts. So it was 1/4 turns with an open ended wrench kinda thing. 2 of the bolts had to be loosened with a breaker bar, 1 on front 1 on back. But they went back in without too much hassle. Also got the trailer hitch swapped over. That was...fun.. but I got it on. Took a day doing both vans from having to do the bracket bolts with open end wrenches. Weird part is, putting them on took less time than pulling the other ones off. So I have the 2 deluxe bumpers, complete and in decent shape if there be any one interested.

Yesterday I spent cleaning the garage getting ready to pull the 5.9 and tranny out of the donor van, along with all the wiring, PCM, hoses, lines etc. Start the process of re-gasketing the drive train, cleaning wires and lines, getting new hoses. New timing chain, trans filter and such. Plan on photos, detailed notes and shop manual for where everything goes in my van. Once ready in a month or so, I will do the swap. Should be a lot cooler weather here by then. Use a couple of vacation days, make a long weekend so i have time for any incidents that might arise.

Today I was at my son's house helping him put in a refurbished 351 and AOD in friend's 87 Econoline. A true Good Times Machine by the way. He's gonna help with mine when I am ready. My son has turned into quite the mechanic. I taught him well.

Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: mlarky] #752986
October 03rd 2019 7:17 pm
October 03rd 2019 7:17 pm
Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
mlarky Offline OP
enthusiast
mlarky  Offline OP
enthusiast
Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
Looks like I have the 904/A500 trans. Tried starting it after sitting 2 weeks. No issues. Hoping to begin some work this weekend on parting out the dual ac pieces, and see if they will fit mine. Waiting for cooler weather to set in soon. Down here in south Central Texas, mother nature apparently didn't get the memo about it being fall yet...

Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: mlarky] #752996
October 04th 2019 2:57 am
October 04th 2019 2:57 am
Joined: Apr 2010
Posts: 2,689
San Diego
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wrcsixeight Offline
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wrcsixeight  Offline
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Joined: Apr 2010
Posts: 2,689
San Diego
I swapped my 8 3/8" (often called the 8.25) differential for a 9.25. Both have 3.55 to 1 ratio
I have to use a conversion U joint in the rear as the yoke of the 9.25 is wider.

Be kind to the connectors on the engine computers, and make sure the wire bundles are not exerting their weight on their connectors.

Might want to get yourself some regular connector cleaner like crc qed for blasting out old dielectric grease and detritus, but this spray does nothing for oxidized electrical connectors. Get a Can of Caig Deoxit D5. It is magic electrical juice.
Pretty much order online unless you have a fry's electronics nearby.

All the sensors which get 5v from the engine computer, benefit greatly from good contact in teh connectors, sending back more accurate readings to the engine computer for it to adjust spark fuel and timing for best power and economy. When I d5'd my sensor connectors, it felt like I took 500lbs of weight out of my van then next drive. The map and TPS sensor connectors were badly oxidized despite being surrounded by dielectric grease for 25+ years.

The Caig D5 has no equal, but its too pricey to waste blasting out crap from ancient connectors.

Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: mlarky] #753061
October 05th 2019 4:47 pm
October 05th 2019 4:47 pm
Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
mlarky Offline OP
enthusiast
mlarky  Offline OP
enthusiast
Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
Thanks for the tip wrcsixeight. Mine is a 3/4 ton and should aready have the 9" diff. I'll double check. Donor van is a 1 ton with 6 lugs diff and 3.90 gears. No swap happening there. The plan is to pull the donor van into the garage tomorrow and start assessing needs, then start pulling the drive train, wiring harnesses, and hoses over the next 2 weekends. Gonna be a ton of work, but I want that V8 and Over drive tranny in my van in big way! My 236,000 mile V6 is beginning to show it's age. Then when everything is ready, I'll take a long weekend for the swap into my van. Praying there won't be too many hiccups and it will be a straight forward swap.

Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: mlarky] #753063
October 05th 2019 6:15 pm
October 05th 2019 6:15 pm
Joined: Aug 2001
Posts: 12,034
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 12,034
Fircrest, WA
wrcsixeight is dead on. If you are going so far as swapping harnesses, now if a perfect time to clean and check the condition of all connection and grounds. Deoxit is awesome stuff. Not cheap, but worth the price (like Kroil).


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Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: mlarky] #753067
October 06th 2019 9:16 am
October 06th 2019 9:16 am
Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
mlarky Offline OP
enthusiast
mlarky  Offline OP
enthusiast
Joined: Mar 2010
Posts: 289
Pipe Creek Tx ( North of San A...
Uh...If I want the V8, I have to swap the harnesses, LOL. Pulling begins today, then cleaning, then determine needs before the V8 replaces the V6 in my Dodge. What gaskets needed or should I do while it's out, etc. Just need to figure out if I will pull the engine and tranny as one unit or not. Let's see how far I get. One "friend" promised to come over and help.

Re: Mlarky's 92 Dodge maybe getting new drive train soon. [Re: mlarky] #753068
October 06th 2019 11:29 am
October 06th 2019 11:29 am
Joined: Aug 2001
Posts: 12,034
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 12,034
Fircrest, WA
Any time I pull an engine or transmission I always

(a) replace the trans input shaft seal
(b) clean the engine as much as possible with a pressure washer
(c) inspect all the gaskets and replace as needed
(d) check the timing chain and replace as needed
(e) check the motor and transmission mounts and replace as needed
(f) clean the transmission as much as possible
(g) check seals and gaskets on the transission and replace as needed
(h) adjust the bands on the transmission

Try and think of everything you can do while it is all apart that is a PITA once it is reinstalled. At the very least do the trans input shaft seal.


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