keeping the pto with a different transmission???

[dohcdelsol93]

I'm hoping to pick up a 67 fj40 in the next week.

It has a 3 speed. It will be a daily driver. About an hour each day in both bumper to bumper traffic + some hwy.

My plans for the vehicle are

OM617 turbo
700r4
AA adapter to connect tranny to newer 60/62 transfer case

Everything else....stock.

I want it to be easy on the wallet at the pump and automatic so the can drive. I've always loved my manual transmissions, but as i get older i find that they are not as fun as they used to be.

I'm looking for @ 30mpg and crusing on the freeway at about 2800-3000rpms at 60-70

Is there any way i can run this set up and keep the factory pto driven winch in working order?

I'm assuming that the pto runs off of the transmission and not the transfercase.

and secondly, if so, who makes and adapter kit to allow me to keep my pto?

thanks for the info ahead of time

 

[inkpot]

Howdy! OEM PTO ran from the transfer case. I think the newer slit case can run one, but it is a different PTO assembly. What's an OM617? I'm drawing a blank on that one. John

 

[FF LC FREAK]

Howdy! OEM PTO ran from the transfer case. I think the newer slit case can run one, but it is a different PTO assembly. What's an OM617? I'm drawing a blank on that one. John

Mercedes diesel engine. But 30 MPG seems a little high. I would guess you'd be looking at more of 20-25 mpg in a 40 (with their brick like aerodynamics ).

Cool build, though. Take lots of pics!

 

[inkpot]

Is that the 5 cylinder from the mid 80s sedans? I know a guy that did that setup. He is getting low 20's for mpg. He is also going up to 33's, I think, for lowering engine speed on the highways. John

 

[Henry James the 47th]

If you're running a 60 series transfer case, which is a splitcase, the pto from the '67 will not fit without a lot of modification. The earlier transfer cases were one piece and had a pto drive with a different flange pattern than the later splitcase-mounted type of drive. So, if you locate a splitcase compatible pto drive box, then it should be no problem adapting the stock pto drive and winch head onto that. With the engine and tranny changes you are contemplating, so long as there is space for the pto driveshaft to run down along the side of the transmission and engine, then adapting the pto driveshaft to work with your set-up should be nothing more complicated than changing the length of that driveshaft.

If the transfer case is located significantly further to the rear (which is what I'd expect with the auto trans) however, one tricky issue you might have to deal with is the gearstick for the pto, which comes up in the cab floor. You'd want to check that aspect of the fit carefully and make sure that it will fit and can be actuated properly inside the cab.

Also, there is the issue of the drive gear for the pto, which normally sits on the output shaft of the transmission. You'd need to figure out if you can get one to fit on to the output shaft of the auto transmission.

 

[dohcdelsol93]

very good info guys.

I've been reading up on the dieselbombers/other MB websites and some guys in cherokees are getting 25+mpg on these builds. I have not put an fj40 on the scale but a MB 300d weighs in at about 35oolbs, if i'm not mistaken a soft top 40 is about the same if you don't have huge tires/bumpers.

These engines cost less than 800 bucks, LKQ/pick a part prices are less than 300.

Guys have built the adapter kits themselvs for these swaps, i have no lathe/mill so i'm hoping to get one to build me one off of their already established plans. If not it's time to start pulling favors.

becaue these engines rev more like gasser engines a special torque converter is not needed. Even the GM 6.2 torque converter is stalled a bit too low for these engines.

The 700r4 seems like it might be a deal breaker for the pto

Any idea what the cruising rpm is on these old 40's with stock 4:10's with 31" tires at 65mph?

So long as this engine is kept at 3200 or lower she's pretty happy. I'm pretty sure the final drive ratio of the 300D was 1:1

Od would be nice but i suppose trading out my 4:10's for 3:73's would be much cheaper/easier than swapping trannys.

 

[dohcdelsol93]

i'm still searching threads on here to see if anyone whos done a 700r4/sbc conversion has kept their pto...not much info out there.


maybe some old school 40 gurus can chime in on if they have seen it work or not.

My front seats are bench seats...so depending on where this lever is...i might not be able

 

[inkpot]

i'm still searching threads on here to see if anyone whos done a 700r4/sbc conversion has kept their pto...not much info out there.


maybe some old school 40 gurus can chime in on if they have seen it work or not.

My front seats are bench seats...so depending on where this lever is...i might not be able

If AA doesn't have it, then the chances are slim that you will find it available. I would check with them first. John

 

[dohcdelsol93]

they make the kit to adapt to the old 10 spline TC...but do not say if it retains the factory pto or not.

Anyone used the factory pto with a sm465 swap?

 

[inkpot]

they make the kit to adapt to the old 10 spline TC...but do not say if it retains the factory pto or not.

Anyone used the factory pto with a sm465 swap?

IIRC, the PTO drive gear would sit right behind the transfer case input gear on the same shaft, and it has the same splines. If the conversion kit still uses the original style input gear, then the PTO gear should fit. That could mean that the transmission output shaft would have to be replaced with a custom (kit) one, or it could use a spud shaft like the older 465 conversion kits. John

 

[dohcdelsol93]

luckily we have a great drive shaft shop right in town so drive shaft mods are not much of an issue.

I will try to call AA later this week and ask them if they know if it re uses the same input shaft to retain the PTO.

Price little kit, eitehr way, still much cheaper than a NV4500 swap an if i'm not mistaken and even better final drive gear for hwy speeds.

 

[dohcdelsol93]

I called AA today. According to the person i talked to the PTO should work fine with their adapter kit since it works off of the TC and not the tranny. The 700r4 to LC 3 speed 10 spline kit includes a shaft that uses a slip yolk to connect it to the LC tranny.

Once i get the fj40 in my hands i'll look closer. He was saying something about PTO's on some models coming out of the rear of the transfercase, i was under the impression that the pto would have to exit out the front of the TC.

 

[Fast Eddy]

He was saying something about PTO's on some models coming out of the rear of the transfercase, i was under the impression that the pto would have to exit out the front of the TC.

The Ramsey PTO connects off the back and hangs down and to the left. There's also an OEM PTO for fire truck water pumps that comes straight out the back.

 

[dohcdelsol93]

cool...don't think i got any of those.

 

[daniel.watters]

That's my old 40. It has a Rhino Winch.