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Old 08-19-2013, 03:54 PM
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kevinp661 kevinp661 is offline
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Powertrain swap

I like the wagon a lot, but I think I'd love it if were fuel injected and had overdrive. So looking at replacing the transmission with an overdrive unit, adding adapters and adding fuel injection. This is pretty spendy and I'd still have pretty old technology (with all due respect, the FI options for us seem to all be of very old design, much better than the 2bbl though), and simple overdrive transmissions are a bit too standard also if the time and money of a swap are going to be taken on anyway, may as well go to a 6 speed.

As an alternative I'm considering swapping out everything, even though my engine has under 1000 miles on it. I can pick up a variety of systems, complete from intake to exhaust tip and output shaft for about $6000. Looking at the 6L Cadillac systems, Hemi systems and Vortec systems. I don't want diesel, I respect it, it's just not for me. Anyone on here do one of these later model complete powertrain swaps? I don't want to change out the stock difs, and I don't want to cut the exterior of the body. I'm good with modifying the firewall and frame. Any suggestions?

Please don't blast me for wanting to do this. I think these wagons are great just as they are. My motivation to change it is because I want to drive it more and get rid of my Ram 2500. A carb'd 360 with a 3 spd auto isn't practical for daily driving (not that the Mega Cab is either). I look at this as spending money to save money.

Thanks in advance for your input!
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Old 08-19-2013, 04:01 PM
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Carnuck Carnuck is offline
 
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I have a modified XJ drivetrain (actually ZJ, but the wiring harness is XJ for now) in mine. Stroker motor will replace the 4.0L and LPG will go on at the same time with an HEI dist. No need for fuel pump with LPG until I inject it.
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Old 08-19-2013, 04:13 PM
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im thinking to add an od trans and efi, it could be way cheaper than a complete swap like that, especially if your stuff is fresh now. not the same results but definitely an improvement.
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Old 08-19-2013, 05:27 PM
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brielly brielly is offline
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The vortec has been done before by some members and is a good system. Keep in mind a change to an OD tranny may warrant a change in axle gearing.
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Old 08-19-2013, 07:20 PM
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My rig has a 5.2 Dakota drivetrain, 35's and 4.56's. Plenty on and off orad, and good gas mileage to. I didn't do the conversion, PO did, Should come in a little cheaper than 6K
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Old 08-19-2013, 07:46 PM
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Why not go big and put a Hemi or Pentastar with an 8-speed automatic? That would meet or exceed your expectations for a modern drivetrain. Also, your Wag would be a big hit at the dealers when the new Wagoneer comes out. Imagine a new and old Wagoneer with the same drivetrain.
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Old 08-19-2013, 10:15 PM
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I did a Jeep 5.2/44RE into ours. But only because I got the engine, trans, PCM, and harness for $400. I put a 5.9 into my TJ, and planned on doing an LS into the wagoneer, but the cost was so little. I have maybe $1000 in the whole swap (including a $100 t-case adapter). I do have to regear now though...

Beware, the hoses, wiring, and fuel lines add up quick...
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Old 08-21-2013, 10:51 AM
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I think any of the above powertrain swaps will work and be an improvement .. I lean more towards the Chrysler side ..
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Old 08-21-2013, 11:16 AM
joe joe is offline
 
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Quote:
Originally Posted by kevinp661
I don't want to change out the stock difs,
That parts gonna hang you up. With stock 2.73 gears your axle is about as already overdriven as practical as possible. Your expensive OD trans will constantly be shifting out of OD and back into high gear to keep the motor in the power band so you're not gaining anything. If you're running larger than stock tires the scenario will be even worse. If you're heart is set on an Od trans budget for for a gearing swap. I suspect you're intention is to re-write the laws of physics by trying to make a 4500 lb barn get good gas mileage?
Good luck with that.
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Old 08-22-2013, 12:33 PM
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Thanks to all of you for your input!

To clarify, I don't want to change out my Dana 44s, I'm cool with new ring and pinions though. Tires are stock size now, but I'd like to go to 32s. Larger than that is just not my style. The wagon has really only been used for a few surf trips in the last couple of years. No off-roading since the repaint and there likely will be none in it's future either; until I sell it anyway.

I think this will be a winter project for me and as some of you have said, these are all good systems. I'll buy the best powertrain at the best price this fall and get on it then. I'll continue to surf with it this summer as is.
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1990 Resto Mod Grand Wagoneer, S&J long block, stock intake and carb, Proform HEI, Elgin RV cam, Doug Thorley long tube headers, Magnaflow 3" cat, 3" Flowmaster 40, Nations 170 amp alt, Rough Country 3" lift, BJ's brake lines, Katzkins leather seats, 1200 Watt/12 speaker Soundstream audio system, sunroof.

Last edited by kevinp661 : 08-22-2013 at 01:56 PM.
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Old 08-22-2013, 01:02 PM
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kevinp661 kevinp661 is offline
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Drivability really.

Quote:
Originally Posted by joe
That parts gonna hang you up. With stock 2.73 gears your axle is about as already overdriven as practical as possible. Your expensive OD trans will constantly be shifting out of OD and back into high gear to keep the motor in the power band so you're not gaining anything. If you're running larger than stock tires the scenario will be even worse. If you're heart is set on an Od trans budget for for a gearing swap. I suspect you're intention is to re-write the laws of physics by trying to make a 4500 lb barn get good gas mileage?
Good luck with that.

Drivability is my true motivation here, Joe. I'd like to eliminate my Ram 2500, I don't have enough parking spots and it will save insurance, tags and maintenance on that. If the wagon only gets 14 mpg when it's done, so be it, but I expect it to be better. I get 15-17 in it now despite what I think is high RPM cruising (pretty sure my gears are 3.23, but certain they are not 2.73). But I want remote start for AC/heat purposes, and I need to be able to drive at sea level and at 7500', where I surf and where I camp (I recognize simple FI will make these things easy). I want it to quietly move down the road like a modern vehicle. With 200 pounds of sound deadener in it and all new seals, I don't hear the road or wind, but the engine and exhaust are loud. That Flowmaster 40 was a dumb idea for me, it's going asap.
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1990 Resto Mod Grand Wagoneer, S&J long block, stock intake and carb, Proform HEI, Elgin RV cam, Doug Thorley long tube headers, Magnaflow 3" cat, 3" Flowmaster 40, Nations 170 amp alt, Rough Country 3" lift, BJ's brake lines, Katzkins leather seats, 1200 Watt/12 speaker Soundstream audio system, sunroof.
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