[Tom Vaught]

The issue with the Doug Nash 5 Speed and the Richmond 5 speed is that the Trans uses the 400 drive shaft yoke and the Nash people put the Trans Mount several inches farther back.

The Nash Trans and most other trans mount with a slight downward angle. The Trans Mount at the Turbo 400 location actually raises the rear of the trans vs a normal Muncie, Saginaw 3 speed, Ford 3 speed, or Turbo 350 trans. Not by a few thousands of an inch, (by almost 3/8 of an inch).

So then you get a India made Rear Trans Mount that is .100" higher vs a stock one and you are almost 1/2" higher in the rear vs a stock Muncie 4 speed deal.

So people like Richie H and others just cut the floor and put the parts together. Do what you want.

I bought a second (used) Trans Crossmember for my car, lowered the rear of the trans to the same angle as the stock 4 speed stuff and had it welded up. I also had the Trans Crossmember "Porches" (Convertible GTO) lengthened so that the crossmember was in the right spot for either the NASH or the Muncie Trans.

I had a custom Driveshaft made for the Turbo 400 HD yoke that fit the 9" rear pig's Yoke Location. It also allowed for the Scatter Shield's 'block saver' thickness so the yoke had the proper depth.

So it is possible to have it done without cutting up the floor any real amount. You just have to fix about 5 or 6 other things with you run non stock parts like I am (Lakewood, Nash, 9", Leonard Long 5 speed Race Shifter).

Hope this helps you understand what Doug Nash and later Richmond Transmissions did for the 5 speed trans. Mine is a HP unit, not a Crash Box.

Tom V.

[Tom Vaught]

Originally Posted by Tom Vaught

added a slight typo correction;

So it is possible to have it done without cutting up the floor any real amount. You just have to fix about 5 or 6 other things WHEN YOU non stock parts like I am (Lakewood, Nash, 9", Leonard Long 5 speed Race Shifter).

In basic terms the extra downward length to the 400 trans mount changes the trans main shaft angle (raises it ) so the case hits the floor as well as the trans yoke when used with the factory crossmember trans pad height. The fix is to lower the trans pad height either by making a custom trans crossmember or making a custom trans rear mount that is almost 1/2" less tall so that the trans shaft angle is the same as the Muncie 4 speed.

Tom V.