Anyone recognize this 5 speed trans

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44070dart

44070dart

How the hell did I get this old..
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looking for info on this if it looks familiar to anyone ...it's in a '66 Chevy...thanks

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It's in a car I'm looking at.. couldn't get a good look the day I was with it..going on a lift next week. This was a picture in the book of stuff about the car. The owner wasn't sure what it was, he didn't install it. Shifts really sweet.

Ballpark ..what is the rear gear ratio dropped to in OD with 4:11 rear, I know the tire diameter fits into the equation, just looking for ballpark figure.
 
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yellow rose said:
Are you sitting on 3 of those??? I’d have that gear box in my car if I didn’t mind cutting the crap out of the floor.
Click to expand...

I have one in the garage that’s always staring at me.

All new mopar 4+1 Nash/Richmond with a Long shifter.

I feel the same way about cutting things up about it. Then add my procrastination.

maybe this manual will help??

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44070dart said:
Ballpark ..what is the rear gear ratio dropped to in OD with 4:11 rear, I know the tire diameter fits into the equation, just looking for ballpark figure.
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OD could be between .62 and maybe .78,
so 4.11s, could cruise at between 2.55 to 3.21.
With 27 inch tires this translates to 65= between 2600 and 2065rpm.
best I can do
 
It's a Nash/Richmond. Period. Richmond bought Nash out a long time ago. It's one or the other.....essentially the same transmission. Good units. If I had one, Vixen's floor would be gettin hacked to smitherines.
 
AJ/FormS said:
OD could be between .62 and maybe .78,
so 4.11s, could cruise at between 2.55 to 3.21.
With 27 inch tires this translates to 65= between 2600 and 2065rpm.
best I can do
Click to expand...

The Nash/Richmonds 5 speeds have 1:1 5th gear. They have deeper 1-4 gears.

The OP seems to be looking at a Nash/Richmond 5 or 6 speed.

So you run 2.71 to 3.23 rear gears but acts like much deeper gear.

The notes on that Nash owners manual I posted are not mine. But you see where the previous owner wrote: 3.23 = 4.29 and 2.71 = 3.59

I haven’t double checks the calcs...but you can get an idea.
 
When I was contemplating overdrives; I had it narrowed down to the GVod, and the Richmond was the other option, on my list. The GVod won because of the flexibility of Gear-splitting.
 
AJ/FormS said:
The GVod won because of the flexibility of Gear-splitting.
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This is a great point to make. Everyone gets so caught up in final drive ratio, but the difference between gears is what can really make driving fun. It's important to look at the ratios as a whole rather than just 5th gear alone. The Science Behind Gear Splitting with Gear Vendors Under/Overdrive - Mopar Connection Magazine | A comprehensive daily resource for Mopar enthusiast news, features and the latest Mopar tech
 
wish4hemi said:
but the difference between gears is what can really make driving fun.
Click to expand...
Exactly right.
With the GVod, and my Commando 4-gear, the splits are .78-.80-.78,, and Second-over gets me 93mph in the Eighth @ 6200 (by the math) with 3.55s. Shifting at 6000, the rpm drops to 6000 x.78=4680 for a powerband of 6000 less 4680=1320 rpm. Centered properly that runs very close to peak power from right out of the starting box. So my trap-speed is higher than it should be for the small cam I run.

With a 727/904 the splits are .59-.69. To trap 93 at near 6000,I would need;
3.23s for 93= 6250 in Second gear, or
4.88s in Third gear, for 93=6280
Course, that means I'd need ,more cam,lol.
So lets say the shift rpm is gonna be 6000 like before, and the 1-2 rpm drop will be from 6000 to 3540=2460rpm. So that's a pretty wide powerband requirement, over 1100 more than with my manual trans.
Ok but, who runs 4.88s on the street? Not me that's for sure.
So to trap in Second gear, those 3.23s are gonna be a lil sluggish off the line in day to day driving. So next up is a hi-stall TC. But since the cruise rpm with 3.23s is 65~about 2750, Do I want to run much more than a 2800? I like the 2800, so that is what I ran in my winter-combo.

The point is, for a well-rounded street machine
as you said;
wish4hemi said:
It's important to look at the ratios as a whole rather than just 5th gear alone
Click to expand...

Having said that, the Richmond ratios have a very nice progression;
3.28-2.13-1.57-1.24-1.00-(.76od), and splits of
.65-.74-.79-.81-.76od
Very nice indeed, and guaranteed to be fun.
I vote 3.91s; for a starter gear of 12.82 and traps 93@5670 in 1.24 Fourth. Now you just need about 430 hp.
And 65=2430 with 27s

EDIT: in .76 overdrive
 
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AJ/FormS said:
Exactly right.
With the GVod, and my Commando 4-gear, the splits are .78-.80-.78,, and Second-over gets me 93mph in the Eighth @ 6200 (by the math) with 3.55s. Shifting at 6000, the rpm drops to 6000 x.78=4680 for a powerband of 6000 less 4680=1320 rpm. Centered properly that runs very close to peak power from right out of the starting box. So my trap-speed is higher than it should be for the small cam I run.

With a 727/904 the splits are .59-.69. To trap 93 at near 6000,I would need;
3.23s for 93= 6250 in Second gear, or
4.88s in Third gear, for 93=6280
Course, that means I'd need ,more cam,lol.
So lets say the shift rpm is gonna be 6000 like before, and the 1-2 rpm drop will be from 6000 to 3540=2460rpm. So that's a pretty wide powerband requirement, over 1100 more than with my manual trans.
Ok but, who runs 4.88s on the street? Not me that's for sure.
So to trap in Second gear, those 3.23s are gonna be a lil sluggish off the line in day to day driving. So next up is a hi-stall TC. But since the cruise rpm with 3.23s is 65~about 2750, Do I want to run much more than a 2800? I like the 2800, so that is what I ran in my winter-combo.

The point is, for a well-rounded street machine
as you said;


Having said that, the Richmond ratios have a very nice progression;
3.28-2.13-1.57-1.24-1.00-(.76od), and splits of
.65-.74-.79-.81-.76od
Very nice indeed, and guaranteed to be fun.
I vote 3.91s; for a starter gear of 12.82 and traps 93@5670 in 1.24 Fourth. Now you just need about 430 hp.
And 65=2430 with 27s
Click to expand...

not following the last bit there...

How do you get 65 mph = 2430 rpm with 27” tall tire running a 3.91:1 rear while your in 1:1 direct drive 5th gear in a Richmond ??

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AJ/FormS said:
the 6speed is listed as having a .76 overdrive
Click to expand...

6 speed... that makes sense now. :thumbsup:

To the OP, there are 5 and 6 speed Richmond transmissions. They look similar.
 
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