Trans question

[ksquared]

I have a shot at a transmission with transfer case. I've been told it came out of a late 80's Bronco. Xfer case is New Process and trans is a 5sp with overdrive (not granny) that looks like a T5. Cross member, linkage and drive shafts included. Right now I have a 4sp top loader with Hurst shifter. Works fine but the overdrive is tempting. My Bronco is a 75 with a 302 which will be changed to a stroked 351W (408). Diff is 4.11 with a locker and I run 33" All Terrains. My use is primarily street and mild off road. I don't know anything about this trans or transfer case. Is it fragile? Any idea what the ratios are? Should I stay with the top loader? Appreciate any thoughts...

 

[Tricky Dick]

Be 100% sure it's from a full size. Then it's a M5R2 and is a decent transmission for a 302. A stock 351 is pushing it and a 408 will be very hard on it. It does not have a granny gear.

The transfer case will be far too large to use.

 

[1969]

Skip it and get a ZF5 transmission instead, with either an NP205, factory bronco Dana 20, or atlas.

 

[ksquared]

Here's the deal - transmission, transfer case, mounts, drive shafts, bell housing, flywheel & adapter plate (don't need last 3) all for 2k. Was a working pull from an early Bronco to switch to an automatic. I know my top loader will easily take the 408 (around 420hp). Was planning on using my top loader with its slightly lower 1st gear until this came along. But who wouldn't like an overdrive on an EB? An overdrive and/or bigger gas tank are probably the most desired things for anyone who has owned an EB for a while (got mine in 84).

 

[Tricky Dick]

Sounds like a better package now but priced on the high end.

I do think you'll be happier with a ZF5 long term with your 408 plans.

 

[bmc69]

I don't believe any of the transfer cases found in 80s 4x4 will fit between EB frame rails. NP-205 does but barely...I suspect the one you've found is an NP-208 though?

 

[Broncobowsher]

Only usable part of that mix is the transmission. Which you are now paying $2k for. Not a deal and a bunch of extra junk.
Pass. Spending way too much money for what will be useful to you.

 

[Oldtimer]

I am running a 351W (that needs a rebuild), 4sp top loader (wide ratio), 4.10 gears, and 33" KM3s.
The motor is turning 3000 rpm at 70 mph and will do so for hours. An overdrive would give me better mpg (maybe), but 70 is about the limit of sanity in a 92" vehicle.

 

[bigmuddy]

Hard pass, to much money for that bit of parts and not the T case won't fit.

I bought basically the same thing from a buddy (long story) for 200$ recently. though I was getting a ZF but nooo, so here I set with this doorstop.

 

[gnpenning]

You may want to post some pictures since you said it came out of a EB. Who knows what the tcase really is, you could be really lucky for all we know and the case be an atlas. Highly doubtful but a miniature possiblity. Guessing is not a good option when buying things. More than one po was wrong about what they are claiming. We can only guess what it might be.

Pictures please. This is a trust but verify situation. Help us help you.

 

[nvrstuk]

I have a shot at a transmission with transfer case. I've been told it came out of a late 80's Bronco. Xfer case is New Process and trans is a 5sp with overdrive (not granny) that looks like a T5. Cross member, linkage and drive shafts included. Right now I have a 4sp top loader with Hurst shifter. Works fine but the overdrive is tempting. My Bronco is a 75 with a 302 which will be changed to a stroked 351W (408). Diff is 4.11 with a locker and I run 33" All Terrains. My use is primarily street and mild off road. I don't know anything about this trans or transfer case. Is it fragile? Any idea what the ratios are? Should I stay with the top loader? Appreciate any thoughts...

I agree, get some pics so we can help ID it. Might be just what you need but you did say it was in a full sized Bronco so the odds aren't good.

Have a buddy in Sacramento area who just pulled a perfect NV4500 (almost identical to a ZF) with Atlas who is selling as a pkg.

I've run the toploader 4 speed with a 351W w/D20 and after that I've also run the ZF with doubler and D20 (then an Atlas then a 205) all behind the 351W. Yeah, I love building and trying different combo's on my same Bronco. Course I've had the thing for 48 yrs.

Anyway, the ZF is a TANK for fun shifting compared to the toploader... HUGE gear splits, shifts slow, etc, etc. It's a truck trans. Great strength, great low 1st, great OD- great trans it's just not comparing apples and oranges.
You have a 3 spd equivalent with a granny and OD. If you don't like quick shifts, nice rpm drops on shifts and feel like you're now driving a truck then the ZF might not be your best option if you want some fun rowing thru gears.

I don't know of any fairly fun close ratio 5 or 6 speeds that will handle the 450-500ft lbs of torque that a 408 would generate. That's the kicker. I went (3 spd with OD in that mix and it was very dissappointing for me. After that I put in a 4r70 after the toploader wide ratio small block 4spd. GREAT trans, fully manually shifting if you want, or full auto with a controller. After that I I looked hard at adapting a couple 6 spd manuals in from other applications and that's when I gave up for a bit and waited till the first adapter came out for the 6r80. Game changer and best of both worlds.

 

[Tricky Dick]

You may want to post some pictures since you said it came out of a EB. Who knows what the tcase really is

Yes that's wise. At least if it came out of an EB we know it's not a 208 or 1356, both would be outside the frame halfway to the rockers.

 

[ksquared]

Ok working on pics...

 

[Timmy390]

I don't know how you plan to use your rig but it it's a street rig then M5ODR2 is very nice. I run a warmed over (torque cam, P heads, headers blah blah) 1996 351w with EFI, M5ODR2 5 speed, D20, 4.11's and 33's. I think it's one hell of a combo. I've barked the tires grabbing 3rd......

Tim

 

[ksquared]

Here...

 

[Tricky Dick]

You're right, that's a T5. And I can't make out the tag but the transfer case looks like a NP231. These are not bad parts, and a really great swap for a mild 302. A 408 is going to stress them.

Definitely not 80s Bronco.

 

[Broncobowsher]

Jeep parts?
T5 in the V8 flavor has way too tall of an overdrive. The gears don't take torque and traction. Ford even passed on it when they did the supercharged V6 Thunderbird. You will have more torque and traction. That T5 would just go boom.

 

[Timmy390]

Only used in small cars and I think Chevy used them in the s10 for a year or so. Yes it was in the Mustang with 302 but having more of those than I care to count......tractions ? What traction? None of them knew their a$$ from the front. Always trying to swap ends.......

Tim

 

[ksquared]

Yeah I just read that the T5 is good for around 300 ft lbs. which is what a stock 302 can produce. Don't think the T5 & a 408 will get along well. Think I'll save 2k & be happy with my top loader Thanks for all the input!

 

[Tricky Dick]

Only used in small cars and I think Chevy used them in the s10 for a year or so. Yes it was in the Mustang with 302 but having more of those than I care to count......tractions ? What traction? None of them knew their a$$ from the front. Always trying to swap ends.......

Tim

The only 4x4 applications I'm aware of were S10, CJ, and Eagle.