doing an auto to spicer 3053a swap - Dodge Cummins Diesel Forum
94-98 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

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Old 06-04-2019, 11:59 PM Thread Starter
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doing an auto to spicer 3053a swap

ok buying the trans this weekend. if anyone is somewhat local to the Beaumont Tx area with an sae 3 flywheel and housing for b series cummins as well as the starter to match id be happy to hear what you want for it.

also if someone wants to swap my fairly new 4.10 srw D80 for a 3.55 drw D80 bring it by and ill do the work on swapping the two.

anyway going with this trans and 3.55 gear to keep me in the proper rpm range with a much closer 4-5 gear so i can use either at 65mph

current set up sucks. 3-4 is 1000 rpm drop so 2500 rpm in 3rd only gets me a hair over 50mph and drops to 1500 rpm when i shift. so when pulling a grade its near impossible to maintain speed as ill just slip the converter trying to stay in over drive but moving to fast to down shift.

the 3053a and 3.55 final drive will put me at 2500 rpm in 4th at 65 and 2000 rpm in 5th at 65mph... current set up is 2000 rmp at 65 but will over rev if i downshift without slowing way down

also if anyone has any pointers on adding a mechanical clutch pedal to a 2nd gen id love to hear it as they only came with hydro. (seen a few 10 speed swaps so i know there is a way)

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Old 11-08-2019, 06:41 PM Thread Starter
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well the 47re finally died, now its time for the ultimate 5 speed swap
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Old 11-08-2019, 06:43 PM Thread Starter
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the truck now has has a full one ton swap as well,,,

as for the conversion the only snag is having a flywheel machined to clear the splines on the input shaft. gotta get rid of this raised area around the pilot and have a 2"circle recessed in about 1/8"
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Old 11-08-2019, 10:34 PM
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Subscribing....love this kind of stuff.

Iím also interested to see what you think of that clutch. I almost went that route but decided on a valair clutch (G56 though and single disk)

2003 Excursion EB, 4x4, 12V Cummins: P-Pump, 5x0.12's, #10 Plate, AFC Mods, G56 trans. 293K Miles and counting!
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Old 11-09-2019, 10:47 AM
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I also went with the G56, but i like seeing new things.

I like the spicer 6+1 in my old truck, but i dont think it had an overdrive

Daily driver/ workhorse: 1994 2500SLT 4x4 Auto. Hewitt EGT, Boost, Trans gauges, Under hood Mech FP gauge, Trident fuel lines, Tork Tek OFV, Mag-Hytec DD Transmission Pan, Ford manual hub conversion, Diamond eye 4" turbo back, 37337 Upgrade. 260K

98 2500slt 4x4 ECLB moldy G56, south bend clutch 3rd gen trac bar , boxed control arms, billet tappet cover w/ dual breathers trident fuel lines, Tork Tek OFV, 4' stainless side dump with muffler 240k
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Old 11-09-2019, 02:30 PM
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I take it the 2" recess is for the pilot bearing? bronze pilot can be made to any size you need, as long as there's enough room for it as is. Just a idea if you have a hard time finding a machinist to turn that flywheel.

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99 Ram 3500 SLT 4x4, 19.5's, P24v, ZF6-750, s362/475, 7x0.014, supporting mods.
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Old 11-10-2019, 01:55 PM Thread Starter
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Quote:
Originally Posted by marco610 View Post
I take it the 2" recess is for the pilot bearing? bronze pilot can be made to any size you need, as long as there's enough room for it as is. Just a idea if you have a hard time finding a machinist to turn that flywheel.
actually it uses the same bearing/bushing specs as stock dodge. the part getting milled out is to allow the flywheel to get closer to the transmission. (the input shaft could be shortened as well) i just do not want to modify the transmission so that it will be easier to swap if needed in the future. these trans missions can be had in NEW OLD STOCK for about $600 shipped.

in the military truck it comes from there was a one off clutch housing about like a SAE2 with a adapter ring for SAE3. im guessing that is why the input shaft pilot and splines are just about 1/2" to long to bolt everything up

machining off that lip, and making a 2" diameter 1/8" recess give me about 5/8" more room. making the pilot hole in the flywheel exactly 3/4" deep. the exact same size as the pilot bushing so it will be flush on both sides.
im going with a 2" circle due to this trans having a 1.5" input shaft so it will have no chance of contact with the flywheel.

i also went with the clutch i did because its better than stock for less the stock price and common and available from many manufactures and could actually be acquired at a local Oreillys.

as for clutch pedals im going stock dodge master, and possibly a pull style slave attached to the mechanical arm that came on the trans.

after putting the clutch assembly in my press ive found that the throwout bearing needs to moved 1/4" from rest to full release where you can see daylight between the pressure plate and clutch disk. what this means is the lever at the tip needs to move 5/8th of an inch to pull the bearing completely off the pressure plate yet travel enough to fully release. also with a pull style they are very adjustable so you can properly adjust as the clutch wears. total throwout bearing travel on the transmission is 1.5" so there is a lot to play with. this syle does not require any preload so bearings should last a very long time.

as for ratio's. this will give the best of both worlds between a 3.55 and a 4.10 final drive. some of you already know this but with the 4.10s you cannot downshift at 65mph without taching out, and with the 3.55 your 1.1 gear is great up to 65mph but OD is to high for any heavy load. (with stock tire size)

this lets me run my 3.55 final drive i just swapped in from the 4.10 but still gives me the 2k rpm at 65 in od. far better for towing. maybe not so much for racing and what not. also the transmission is much tougher built than any dodge transmission and much much cheaper to flatout replace if needed.
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Old 11-10-2019, 02:01 PM Thread Starter
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flywheel housing 3925223
flywheel Cummins Flywheel 3935205
clutch 04-107L.2 from phoenix friction
starter 6573
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Old 11-10-2019, 02:15 PM Thread Starter
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i will be posting photos of every step of the instal as well. there just is not enough info out there for guys wanting to actually swap in a medium duty or heavy duty transmission into our trucks. lots of talk, lots of completed photo's and video but no one seems to what to show anyone how to do it and list part numbers. as it stands im predicting about $2000 total investment into my swap and this is going from auto to this. may have been less if you already have a manual transmission but its still cheaper than a proper rebuild and upgrades to my 47re that just died.

im also not going to make a tail mount for the transmission. im going to make mounts that come off the flywheel housing like they do in larger trucks. so basically ill have 4 motor mounts in a 4 corner fashion and the transmision will be suspended freely like intended. makes clutch changes and dropping the transmission take less than an hour
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Old 11-10-2019, 02:18 PM Thread Starter
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last thing of note. there is no provision for a reverse light switch or speed sensor on this transmission. there is a rod that comes out of the transmission when in reverse that ill used to trigger some type of switch, im getting a gps controller to connect to the electric pick up on the oem wiring to give it a signal and hopefully keep my cruise control... speedometer has never been accurate in this truck so im used to using the gps for that.
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Old 11-10-2019, 03:17 PM
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Quote:
Originally Posted by Nathan Todd Campbell View Post
last thing of note. there is no provision for a reverse light switch or speed sensor on this transmission. there is a rod that comes out of the transmission when in reverse that ill used to trigger some type of switch, im getting a gps controller to connect to the electric pick up on the oem wiring to give it a signal and hopefully keep my cruise control... speedometer has never been accurate in this truck so im used to using the gps for that.
You can run the speedo off the read dif.

Daily driver/ workhorse: 1994 2500SLT 4x4 Auto. Hewitt EGT, Boost, Trans gauges, Under hood Mech FP gauge, Trident fuel lines, Tork Tek OFV, Mag-Hytec DD Transmission Pan, Ford manual hub conversion, Diamond eye 4" turbo back, 37337 Upgrade. 260K

98 2500slt 4x4 ECLB moldy G56, south bend clutch 3rd gen trac bar , boxed control arms, billet tappet cover w/ dual breathers trident fuel lines, Tork Tek OFV, 4' stainless side dump with muffler 240k
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Old 11-10-2019, 07:33 PM Thread Starter
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I'll have to look into exactly how to do that
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