RH transmission - The Result

[Cudajason]

I went to the wrecker this morning and found two Dakotas. One was a manual and the other one was an automatic with the drive train missing. Go figure!

Thanks again Murray. 

I thought Brad had a couple of 518 lined up for you 

Haven't heard back from Darcy yet?

Wait Darcy owns a transmission shop???

Jason

No he used to be a service manager at a dealership and did them under warranty  etc.... he used to bring some of them home but never did anything with them...

OK understood...please let me know if you hear back from him!  Were you checking with another guy as well...or am I confused.

Ya got 2 more eyes looking out in Wisconsin.
Probable to get a running rustbucket.

Thanks man...I appreciate it.  Of course if you find one we need to figure our how to get it to Canada!!!!

Jason

[Cudajason]

Well fellas,  I appreciated all the help.

Looks like no luck on finding a 518 / 46RH.

I am going to see if the 500 i was looking at is still available.

Jason.

[Cudajason]

Well the 500 I was looking at is sold already.

Snooze you loose I guess.

Jason

[Katfish]

You're better off, hold off till you find a 518

[Burdar]

Well the 500 I was looking at is sold already. Snooze you loose I guess.

I've got 2.  Drive down and pick one up. 

[1 Wild R/T]

You're better off, hold off till you find a 518

Why?......  I hate when people make a statement & don't offer a reason....

[Katfish]

Why not start with a 727 based design?

The A-518 is also known as a 46RH transmission and was used extensively by Chrysler in the early to mid- '90s as a replacement for the A-727. It is the heavier-duty cousin of the A-500 overdrive, typically used behind V-6 engines in the mid-'90s.

[1 Wild R/T]

Well if you need all the extra strength fine, but realize you'll have worse gear ratios, more mass, a less efficient trans that uses more horsepower & honestly racers have been putting 904's parts inside 727 cases for over thirty years cause they are strong enough to take that abuse again cause more horsepower gets from the engine to the rear wheels...

But honestly for a street car the gear ratios are the big advantage.... 

A car with 3.55 gears and a A500 will have lower 1st gear(9.72) than a car with 3.91 gears and a 518 (9.57)....

Plus the 3.55/A500 combo has a 2.44 O/D gear vs the 3.91/a518 having a 2.69 O/D gear

[blown motor]

Well if you need all the extra strength fine, but realize you'll have worse gear ratios, more mass, a less efficient trans that uses more horsepower & honestly racers have been putting 904's parts inside 727 cases for over thirty years cause they are strong enough to take that abuse again cause more horsepower gets from the engine to the rear wheels...

But honestly for a street car the gear ratios are the big advantage.... 

A car with 3.55 gears and a A500 will have lower 1st gear(9.72) than a car with 3.91 gears and a 518 (9.57)....

Plus the 3.55/A500 combo has a 2.44 O/D gear vs the 3.91/a518 having a 2.69 O/D gear

All of this kind of information needs to get catalogued somewhere. Some of you guys have vast sums of knowledge that most of us don't know.

[Cudajason]

Well if you need all the extra strength fine, but realize you'll have worse gear ratios, more mass, a less efficient trans that uses more horsepower & honestly racers have been putting 904's parts inside 727 cases for over thirty years cause they are strong enough to take that abuse again cause more horsepower gets from the engine to the rear wheels...

But honestly for a street car the gear ratios are the big advantage.... 

A car with 3.55 gears and a A500 will have lower 1st gear(9.72) than a car with 3.91 gears and a 518 (9.57)....

Plus the 3.55/A500 combo has a 2.44 O/D gear vs the 3.91/a518 having a 2.69 O/D gear

All of this kind of information needs to get catalogued somewhere. Some of you guys have vast sums of knowledge that most of us don't know.

Agreed...there is all kinds of misinformation out there on the internet on these two transmissions.  This is the first I have heard that the  OD gearing was different.  I have head that 1st gears were different, but also read they were not.


At the end of the day, I am going to take which ever RH trans I can find...because I am not having much luck finding any!

Jason

[1 Wild R/T]

Agreed...there is all kinds of misinformation out there on the internet on these two transmissions. This is the first I have heard that the  OD gearing was different. I have head that 1st gears were different, but also read they were not.


At the end of the day, I am going to take which ever RH trans I can find...because I am not having much luck finding any!

Jason

The O/D gearing is the same... In my example above the rear axle ratio is different 3.55 vs 3.91 but because the first gear ratio in the 500 is lower the total multiplication is greater even though the car with the 500 has less axle gear...

And because it has less axle gear the net effect is O/D is taller.....


3.23 x 2.74 = 8.85
3.55 x 2.74 = 9.72       
3.91 x 2.45 = 9.75

3.23 x .69 = 2.23
3.55 x .69 = 2.44
3.91 x .69 = 2.69

[Cudajason]

Agreed...there is all kinds of misinformation out there on the internet on these two transmissions. This is the first I have heard that the  OD gearing was different. I have head that 1st gears were different, but also read they were not.


At the end of the day, I am going to take which ever RH trans I can find...because I am not having much luck finding any!

Jason

The O/D gearing is the same... In my example above the rear axle ratio is different 3.55 vs 3.91 but because the first gear ratio in the 500 is lower the total multiplication is greater even though the car with the 500 has less axle gear...

And because it has less axle gear the net effect is O/D is taller.....


3.23 x 2.74 = 8.85
3.55 x 2.74 = 9.72       
3.91 x 2.45 = 9.75

3.23 x .69 = 2.23
3.55 x .69 = 2.44
3.91 x .69 = 2.69

OK now I understand it...and this is why there is misinformation on the internet!!!!

Doh!!!

[1 Wild R/T]

Agreed...there is all kinds of misinformation out there on the internet on these two transmissions. This is the first I have heard that the  OD gearing was different. I have head that 1st gears were different, but also read they were not.


At the end of the day, I am going to take which ever RH trans I can find...because I am not having much luck finding any!

Jason

The O/D gearing is the same... In my example above the rear axle ratio is different 3.55 vs 3.91 but because the first gear ratio in the 500 is lower the total multiplication is greater even though the car with the 500 has less axle gear...

And because it has less axle gear the net effect is O/D is taller.....


3.23 x 2.74 = 8.85
3.55 x 2.74 = 9.72       
3.91 x 2.45 = 9.75

3.23 x .69 = 2.23
3.55 x .69 = 2.44
3.91 x .69 = 2.69

OK now I understand it...and this is why there is misinformation on the internet!!!!

Doh!!!

And there's more misinformation... I screwed up my chart above... I highlighted the error...  The correct line is below..

3.91 x 2.45 = 9.57      I transposed the 5 & 7    9.75 should be 9.57.....

[Cudajason]

I just had an epiphany...   I am struggling to find an RH 2wd trans, I have found a few RE transmissions and a few RH transmission with a Transfer case....

Does anyone know if I could move the overdrive section form an RE trans to an RH 4wd trans?

Jason

[1 Wild R/T]

Never tried it but I'm 99% sure it would work...   Also clutches & geardtrain can be swapped...