Couple 46rh questions

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Truckie

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I’m putting a 369 magnum and a 46rh into my sons 67 Dart. Yesterday I test fit it to see how much tunnel work needs to be done and I was pleasantly surprised. I only saw clearance issues in 3 minor spots. I thought it would be a lot worse. I was thinking of cutting a couple things off the trans case but thought I would make sure the parts aren’t needed before I do. There are two parts that stick out on the drivers side of the bell housing that appears to have not been used in the donor truck as well as a spot on the rear passenger side of the case just past the pan. They don’t appear to cause any clearance issues but figured the more room the better if they weren’t needed.

first pic shows the three spots that hit the tunnel. Second and third show the parts I would like to cut off.

408A231E-B77F-4B55-90AD-98C70FBD2804.jpeg


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If the Dart is floor shifted, I don’t thing the transmission has the built in bracket to mount the bracket that the vertical rod on the shifter uses. What you’re thinking if removing might be for a bracket for a column shifter.
 
Truckie ,
Take a look at my build thread in members restorations

67/68/69 cuda dilemma

If you want to see how to fit one of these with stock floor shift. It's more than just hammer out the 3 spots in the tunnel you pointed out, although that is necessary. You will need to do that as well. Last 2 pages should be a wealth of info for you in regards to this. We are doing a 42RH with OEM floor shifter and console. The OD unit is the same as a 46RH. You will need to do about the same to get it to fit. With chassis level front to back 2° to 4° is the industry standard on engine trans angle. Mine was at 4° with carburetor base level. You will need to make your own unboltable crossmember as well. Stock wont fit.

Best of luck. My build thread is a roadmap for you to follow.

Matt
 
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If the Dart is floor shifted, I don’t thing the transmission has the built in bracket to mount the bracket that the vertical rod on the shifter uses. What you’re thinking if removing might be for a bracket for a column shifter.
It doesnt , but my build thread shows the way on the last few pages on how to mod the rod for clearance, and how to attach it at the bottom. I am very close to done with its mockup but have a little more to do fitting the stock shifter. A shim needs to be made at the top.
 
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The nubs on the left side of the bell housing you can remove to make more room, although I don't think you really need to. There should be plenty of Room in this area to not have to do that
 
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Car is column shift and will stay that way for a while unless making that work isn’t doable.
 
I’m putting a 369 magnum and a 46rh into my sons 67 Dart. Yesterday I test fit it to see how much tunnel work needs to be done and I was pleasantly surprised. I only saw clearance issues in 3 minor spots. I thought it would be a lot worse. I was thinking of cutting a couple things off the trans case but thought I would make sure the parts aren’t needed before I do. There are two parts that stick out on the drivers side of the bell housing that appears to have not been used in the donor truck as well as a spot on the rear passenger side of the case just past the pan. They don’t appear to cause any clearance issues but figured the more room the better if they weren’t needed.

first pic shows the three spots that hit the tunnel. Second and third show the parts I would like to cut off.

View attachment 1715718547

View attachment 1715718548

View attachment 1715718549
That is fitting better because it’s not a 46RH. You have there a 42RH or A500. It is smaller like a 904 trans.
You will need to know that if you need to order any parts for it.
 
That is fitting better because it’s not a 46RH. You have there a 42RH or A500. It is smaller like a 904 trans.
You will need to know that if you need to order any parts for it.
What makes you say it isn’t a 46rh? I pulled the transmission out of a 93 ram 1500 2wd with a 318 in it. Truck only ahead 125k on it so doubt trans had been swapped. Wouldn’t the 318 have the 46rh?
 
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318 in a truck should be a 46RH. But that doesnt mean the trans is the original it came with. I think but am not certain that the 318 could have had either transmission, although the 42RH is geared lower in first than the 46RH to allow V6 trucks and vans to pull loads easier from a standing start.

Does the pan look like an 904 pan or a 727 pan. If it looks like an 904 pan it's a 42RH. If it looks like a 727 pan it's a 46RH. 46RH and 727 have a bump out on the right front of the pan.

OD unit is the same size external dimension for both the 42RH and 46RH. Trans total length is longer for the 46RH. If pan shape is like one below, it's a 42RH.

20201203_092856.jpg
 
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A light duty basic 1500 2WD could have a 42RH with 5.2 engine. They were not as common, but they are out there.
As moparmat2000 said, look at the shape of the pan. The 46RH had bigger internals, so it moves the intermediate servo out to the right side, same shape as a 727.
In the above pictures it also looks like the slimmer case, where the clutch packs are.
Nothing wrong with a 42RH for your swap either. It will require much less cutting.
 
Will still require same amount of cutting because OD unit is where the issue is. Both OD units are the same physical size. The A727 fits an A body tunnel, and so will the front 3 speed part of a 46RH. Its tighter fitting there yes definitely, but the problems with both are where the OD unit is. 42RH gives you more space to run the TV cable up to the carb IMHO
 
318 in a truck should be a 46RH. But that doesnt mean the trans is the original it came with. I think but am not certain that the 318 could have had either transmission, although the 42RH is geared lower in first than the 46RH to allow V6 trucks and vans to pull loads easier from a standing start.

Does the pan look like an 904 pan or a 727 pan. If it looks like an 904 pan it's a 42RH. If it looks like a 727 pan it's a 46RH. 46RH and 727 have a bump out on the right front of the pan.

OD unit is the same size external dimension for both the 42RH and 46RH. Trans total length is longer for the 46RH. If pan shape is like one below, it's a 42RH.

View attachment 1715718738
Looks like I have a 42rh instead of a 46.
 
42RH will do just fine. I specifically decided on the V6 42RH because of that lower first gear with a mild built 318, and 3.73 gearing. This will make this thing feel like more of an animal than it has a right to be, and will cruise at 2,400 rpm at 75 mph with OD and lockup engaged.

Also leaves a little more room for the TV cable to fit.
 
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Please check out the last 2 pages of my build thread on how to fit this thing in your sons car. 69 barracuda and 67 dart are going to be the same in this regard.
 
42RH will do just fine. I specifically decided on the 42RH because of that lower first gear with a mild built 318, and 3.73 gearing. This will make this thing feel like more of an animal than it has a right to be, and will cruise at 2,400 rpm at 75 mph with OD and lockup engaged.

Also leaves a little more room for the TV cable to fit.
Ok, so with my 360 what torque converter do I use? I have the torque converter from the 99 360. Will that work? Do I need to get the one that was with the 42rh 318 donor and knock the weights off?
 
Please check out the last 2 pages of my build thread on how to fit this thing in your sons car. 69 barracuda and 67 dart are going to be the same in this regard.
I looked over you thread. Wish I would have seen it 2 days ago. Everything I had read said remove the whole crossmember arch so I already cut it out. I will definitely use it for further reference.
 
That I dont know. A 42RH should no counterweight on it because 318s and 3.9s are internally balanced. My 42RH out of a V6 had no counterweight on it. I am going to use a regular small block flex plate. You probably should use a neutral balance converter, get a flex plate for an externally balanced 360 like one from B&M. When I put an engine together I have my machinest internally balance the rotating assemblies to eliminate the special external balancing crap. Maybe somebody else can chime in as to weather or not the 99 360 converter will fit and work on a 42RH.
 
I looked over you thread. Wish I would have seen it 2 days ago. Everything I had read said remove the whole crossmember arch so I already cut it out. I will definitely use it for further reference.
You need to put something back in there though, because of the torsion bars holding up the front end. You have to have something in there. Otherwise some 18 gage floor pan is all that's holding the stubs of crossmember where the torsion bars are.
 
You need to put something back in there though, because of the torsion bars holding up the front end. You have to have something in there. Otherwise some 18 gage floor pan is all that's holding the stubs of crossmember where the torsion bars are.
I will. I have 3/16 ga strap I’m going to use. At least two layers with a gap in between each layer. The bottom strap I’m going to form to overlap along the bottom of the torsion bar crossmember all the way to the torsion bars. The top strap I plan to peel back some of the floor and weld it to the top of the crossmember for extra strength
 
That will work well. If you decide on a cable operated floor shifter like a Hurst or B&M , the install kit for the A904 works on this trans
 
That will work well. If you decide on a cable operated floor shifter like a Hurst or B&M , the install kit for the A904 works on this trans
Thanks. Have you done this? I think I read somewhere about people not liking the cable shift.
 
I have not done this to one of these, I do know they fit the same as an A904. A lot depends on cable routing. Cable routing needs to be smooth with no kinks or tight spots.
 
I have not done this to one of these, I do know they fit the same as an A904. A lot depends on cable routing. Cable routing needs to be smooth with no kinks or tight spots.
I’m going to try to make the column shift work for now if I can. If not the cable shifter is probably a good plan B.
 
I am also deciding on how I will do a TV cable (kick down) . I was considering modifying a stock setup to use with a carburetor. This way if the cable goes bad I can just pick up a new stock cable from anywhere. Jegs has a cable kickdown. Not sure if it's a repackaged Lokar one or a knockoff. People have had good luck with the lokar cable kick downs. If you find an aftermarket cable kickdown t hff at says its for A727 - A904 it will work with your 42RH.
 
If your going to try to make the column shift work, I wouldent cut those nubs off the bellhousing just yet then. You may need them on there to attach a homemade bracket for the column shift cross bar.
 
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