I have a 59 AMC Cross Country wagon with original 327. Looking to install Chevy 200 4R trans. Not been able to locate a transmission adapter for that application. Any leads or ideas??????
Have you considered rebuilding the original trans? They used a Borg Warner that was used in many different cars, parts are still available. The AMC guys should be able to help.
For anything weird like this, the first place to try is Bengston's. I have no idea if they have one, but they can put a Seagrave V12 against a GM automatic, so anything's possible,
Thank you for the reply, trying to incorporate overdrive into the build. Current original trans is 3 speed.
It's Bendtsen's (I think), www.transmissionadapters.com . Just looked and they don't list one for AMC but will custom make one so I guess if you just have to have one......dig deep
Farna on this forum would know if anyone does. Also might contact Advance Adapters or Novak just to see what they tell you.
For some makes/models of engine and transmissions the engineering and machining required is substantial. For other combinations the adapter is fairly simple. I have no idea where your AMC engine block falls in that spectrum. However, it might well be worth investigating making your own. If you are uncertain of your ability to evaluate that possibility, you might find a machinist who would be interested in participating for a reasonable fee. Best wishes with whatever you decide. Ray
If I remember correctly, early '60's Jeep Wagoneers with the AMC 327 used a Buick nailhead TH400 with an adapter plate. If you can locate this adapter and an old Buick TH400, you can probably use a gearvendors overdrive if you have enough money.
Not a 200r4 but read: http://theamcforum.com/forum/aod-for-327_topic87907_post782491.html?KW=327+bell#782491 Nick
There are no separate Chevy or BOP 2004R bolt patterns. All 2004R automatics are multi-pattern cases and fit Chev/BOP engine blocks. Turbo-Hydramatic 350 and 400 have distinct bolt patterns for their original application (Chevy or BOP) except for a few later production TH-350C models which were multi-pattern cases. 700R4 cases are Chevrolet pattern or GM 60* V6 and 4 cylinder pattern. Ray
Nope, it's me commenting on the fact that I learned something new. I thought they had different bellhousings on that transmission
Regarding my previous comment, I was referring to the round bellhousing used on the old Buick nailheads, not the BOP or Chev patterns. Also, do you realize that old Ramblers used torque tubes up to 1966 which opens up a new can of worms?
While the multi pattern is much more common, the 2004r was produced with a bop onlt and a chevy only bell also. Multi pattern Chevy pattern BOP Pattern
Looks Like Novak Adaptors makes an AMC to Hydramatic adaptor kit for the later 304/360/401 engines. I am not sure if they share the same bellhousing pattern as the earlier 327 Rambler engines, but they may have good info for you. https://www.novak-adapt.com/catalog/adapters/engine-to-transmission/amc/kit-437amc/
You may be correct, but I have serous doubts about that regarding specifically the TH2004R. The TH200/250 has Chev only and BOP only cases, I had a TH200 with BOP a few years ago. But I do not believe that applies to TH2004R. Every bit of information I have ever seen over the years in that regard has affirmed multi-fit case on all 2004R. I currently have four 2004R trannies and had another one awhile back and have never seen a Chev only case (nor BOP only) even though at least three of the 2004R's I have, and had, came from Chevy powered vehicles (Camaro and Monte Carlo). But, with verifiable facts I am open to standing corrected. I don't like being infected with misinformation. Can you post a reliable reference and application of years and models that have either/or but not both patterns? Ray
The Gen1 AMC V-8 (1956-66 250/287/327... often called Nash or Rambler V-8) has a different bell pattern than the later models.. bell is unique to that motor. Some guy in Canada, I think, had made an adapter a few years ago, but no one has been able to contact him since. It's get a custom adapter made, I'm afraid. You do have a couple other options: 1) Get a factory three speed with overdrive. Rather common in the late 50s to mid 60s, shouldn't be too hard to find. AMC change the torque-tube mount starting in 1962, so you will need a 58-61 model. 2) Gear Vendors used to make a divorced OD unit that could be mounted in anything. you may have to call them about that. It would require some driveshaft tunnel work and fabbing a crossmember to support it. Gear Vendors units aren't cheap either -- expect around $2700-3700 depending on model. Can probably have an adapter made by a competent machine shop for that price... which in the long run would be cheaper.
Speaking of overdrives... there is more than one way to skin a cat! Try installing a three speed manual trans as an auxilliary/divorced unit behind your existing trans. It needs to be a mid 60s or newer fully synchronized unit, and you will need to use the clutch or at least let off the gas to shift (if an auto trans). No, it won't give you a higher gear as an OD unit will do. What you do is change the rear axle ratio to a much higher (smaller number, like a 2.56 or something) gear, then use the second trans in a lower gear to get good take-off. I suspect you'd never use first gear in the second trans, just second and third. I haven't done the gear math, but it should work, at least in theory...
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