Transmission swap?
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Transmission swap?
I own a 1982 F250 4x4, extended cab, LWB, 351W.
VIN: 1FTGX26G9CK1...... AXLE CODE: C7 Trans Code: A
Problem is, this truck simply doesn't feel like it's geared right. 1st is creeper, which I really don't need ( I can always use 4L) 2nd is low, 3rd is a tad to high and 4th is too low for highway. Is there any manual transmission that I could put in it's place that would make the thing more driveable? An overdrive would be nice. I don't really want to sink a lot of money into this vehicle if possible, but the fuel savings realized with an OD trans may make a swap worthwhile. I plan on dropping the trans to replace the rear main seal anyway. Does anyone have any suggestions?
Thanks in advance.
VIN: 1FTGX26G9CK1...... AXLE CODE: C7 Trans Code: A
Problem is, this truck simply doesn't feel like it's geared right. 1st is creeper, which I really don't need ( I can always use 4L) 2nd is low, 3rd is a tad to high and 4th is too low for highway. Is there any manual transmission that I could put in it's place that would make the thing more driveable? An overdrive would be nice. I don't really want to sink a lot of money into this vehicle if possible, but the fuel savings realized with an OD trans may make a swap worthwhile. I plan on dropping the trans to replace the rear main seal anyway. Does anyone have any suggestions?
Thanks in advance.
4wd Low
Joined: May 2004
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I have a 85 Supercab 4X4, long bed. I switched out the C6 for an AOD. I am happy with the results. Couple of things you need to know:
1. Need to get the linkage kit for the kick down from Lokar, http://www.lokar.com. The kickdown is very important, at it is really the shifting points for the AOD.
2. Get the linkage off another truck. I did not and my shift indicator is off.
3. The cross member will have to be modified to accept the new lenght of the AOD, about 1.5 inches.
4. The drive shaft will have to be shortened by approx. 1.5 inches.
5. Important, the flywheel, flexplate, must be changed if you have a 351W. If you have a 351W, you must get a flexplate from a 81 or older 302. Pioneer, http://www.pioneerautoinc.com/, has the correct flexplate. Their P/N is FR8202. The flexplate from the C6 will not bolt correctly to the troque converter. You need a 28 oz balance on the flexplate. I talked to Pioneer, they knew what to do.
I have to pull my tranny to change this, I have a vibration from this. I am going to do it this week.
This was worth it in the end. I lost 1000 RPMs. At 65 mph, the truck is RPMing at 1800.
1. Need to get the linkage kit for the kick down from Lokar, http://www.lokar.com. The kickdown is very important, at it is really the shifting points for the AOD.
2. Get the linkage off another truck. I did not and my shift indicator is off.
3. The cross member will have to be modified to accept the new lenght of the AOD, about 1.5 inches.
4. The drive shaft will have to be shortened by approx. 1.5 inches.
5. Important, the flywheel, flexplate, must be changed if you have a 351W. If you have a 351W, you must get a flexplate from a 81 or older 302. Pioneer, http://www.pioneerautoinc.com/, has the correct flexplate. Their P/N is FR8202. The flexplate from the C6 will not bolt correctly to the troque converter. You need a 28 oz balance on the flexplate. I talked to Pioneer, they knew what to do.
I have to pull my tranny to change this, I have a vibration from this. I am going to do it this week.
This was worth it in the end. I lost 1000 RPMs. At 65 mph, the truck is RPMing at 1800.
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Thanks for the info, but I really don't want to change the truck to an AT. It currently has a 4 speed MT. According to the owners manual, they offered another 4 speed that year. I do not believe it had a creeper 1st, and may actually have had overdrive. I do not know if this was offered in the V8 or not. Also I do not know if this used hydraulic clutch slave or not. So I was wondering what else, beside a transmission would I need. Bellhousing, linkage, etc. Thanks again!
Logistics Pro
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From: GANS
the other option for a F-250 would probably be a T-19, which is probably about the same as you have now.
There was a three-speed with Od in 1/2tons, but they break when you are just driving, let alone if you are towing..
your best bet is a ZF-5 from a newer F-250/350. However, they run around $1000, and a lot of the time they are closer to $1500.
I really doubt you'll save enough $$ in gas with OD to pay for the tranny in 4-5 years.
There was a three-speed with Od in 1/2tons, but they break when you are just driving, let alone if you are towing..
your best bet is a ZF-5 from a newer F-250/350. However, they run around $1000, and a lot of the time they are closer to $1500.
I really doubt you'll save enough $$ in gas with OD to pay for the tranny in 4-5 years.
Lead Driver
Joined: May 2000
Posts: 9,236
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From: Senoia, GA
ZF 5 speed is trong as heel and will bolt up to your 351.....there are plenty out there in j-yards, just gotta look. although they will prolly cost you a pretty penny, they are well worth it in the long run. strong, reliable, and has a very broad range of ratios for different driving conditions.
-cutts-
-cutts-
Logistics Pro
Joined: Jan 2002
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From: GANS
t-19 is a borg warner.. I had a 3sp w/ OD stick, and the 3rd/OD bearing went out in about 10K miles..
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I narrowed the list of possible transmissions to T170FT, T170FS, and T170F. Anyone know the difference between these? Any better than the other.
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Your T-19 should have a 1:1 4th gear; thus, to get lower RPM on hiway sppeds you'll need a OD trans. Really the ZF is the best;but, as Bremen said they are costly - also they use a hydrolic clutch - I would guess your '82 is a linkage clutch.
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Yeah, the 82 uses linkage. What is the NP435? Is that similar to the T-19? I believe that transmission was used as well. I can't find any cross reference for the VIN or Trans code on door jamb to accurately ID this trans. From pictures I saw they look the same. As I said before, I seldom tow anything and drive the truck less than 5000 miles a year. Seems like a ZF is a lot of money and work for what I use the truck for. As far as weak manual transmissions, I owned a Bronco II and am familiar with the cheap Mazda designs.........
Logistics Pro
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From: GANS
The Np435 is a heavy duty 4 speed truck tranny just like the T-19. The only differences are as follows: non-syncho granny low & reverse and a ~6.7:1 low gear, compared to the 5 something to 1 that the T-19 has.
Post Fiend
Joined: Mar 2002
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From: Bonita Springs FL
Bottom line, if you want an overdrive manual tranny, you're stuck with the ZF 5 speed. It's the only manual overdrive that Ford used that wasn't better suited as a boat anchor.
The rest of the trannies fall into one of two categories - 4 speed, granny low, no overdrive; manual overdrive but not designed for the long haul.
There's also the column shifted three speed, but I know that doesn't have overdrive. Can't comment on the strength of that unit.
BTW, a trans code of 'A' means NP435. In the automotive industry, it's commonly called a 'rock crusher'.
The rest of the trannies fall into one of two categories - 4 speed, granny low, no overdrive; manual overdrive but not designed for the long haul.
There's also the column shifted three speed, but I know that doesn't have overdrive. Can't comment on the strength of that unit.
BTW, a trans code of 'A' means NP435. In the automotive industry, it's commonly called a 'rock crusher'.
