Nash four speed question...........

[Geddes]

I am not familiar with Nash four speed stuff.

Question: What box or pattern is it based on? Toploader or Borg Warner, maybe?

thanks................

[Mark Yacavone]

Nothing like either one.
It uses a split case-right down the middle. It does use T 10 style sliders and shift forks.

[Rory McNeil]

They are normally a Nash 4+1 5 speed trans, with 1 gear left out. Like Mark said, the case splits down the middle, making it very simple to work on. Fairly common in the days before Jericos and G Forces.

[Geddes]

Toploader pattern...? My question. What bellhousing setup is going to work? It is for a friend putting his car together.

Thanks.

[Dwight Southerland]

Depends what your friend has and what you mean by "Doug Nash" stuff. Nash has made dog-tooth gear sets for production transmissions and also the complete split-case transmission that can be configured for one to five forward speeds. If he has a modified production transmission, then whatever case it is in has the bolt pattern. If he has a split case transmission, the case has been made with standard GM, Ford toploader and Chrysler bolt patterns, and can be equipped with matching front bearing retainers and input shafts for each configuration. So, the question is not how is the Doug Nash transmission manufactured, but what does your friend have?

[Rory McNeil]

I used to have a Nash 5 speed, the case had multiple bellhousing bolt patterns, similar to the Jerico, and like the Jerico, there were various input shafts and bearing retainers available for different applications. Since the Nash is so old now, the challange is to find the correct input and bearing retainer to fit your application, if it is different than current setup. In our local stickshift group, there are at least 4 guys running the old Nash 5 speed, they likely have 5 or 6 Nashes between them. I know that they have had sliders and gears modified and repaired by Liberty, but stuff like the inputs and bearing retainers are getting tough to find. The Nash was very popular with the Modified Production racers in the late 70`s-early 80`s, as well as some older S/S cars, best bet would be to ask if any old M/P or S/S racers in your area, (or this forum) have stuff laying around. I`m not sure how much it costs,but converting one of these old Nashes to a face tooth setup would make for a nicer shifting, and less maintenance required unit.

[Dwight Southerland]

Originally Posted by Rory McNeil

I used to have a Nash 5 speed, the case had multiple bellhousing bolt patterns, similar to the Jerico, and like the Jerico, there were various input shafts and bearing retainers available for different applications. Since the Nash is so old now, the challange is to find the correct input and bearing retainer to fit your application, if it is different than current setup. In our local stickshift group, there are at least 4 guys running the old Nash 5 speed, they likely have 5 or 6 Nashes between them. I know that they have had sliders and gears modified and repaired by Liberty, but stuff like the inputs and bearing retainers are getting tough to find. The Nash was very popular with the Modified Production racers in the late 70`s-early 80`s, as well as some older S/S cars, best bet would be to ask if any old M/P or S/S racers in your area, (or this forum) have stuff laying around. I`m not sure how much it costs,but converting one of these old Nashes to a face tooth setup would make for a nicer shifting, and less maintenance required unit.

Try here . . .
http://www.gforcetransmissions.com/

They have a lot of the patterns for the Nash transmission.

[gmonde]

if the nash 5 speed where to be converted to 4 speed would it be legal in stock ??? gmonde

[Sean Marconette]

Just speaking from experience. I bought a used G-Force that was more similar to a Nash internally. Sent it to G-Force for the correct gear sets and input shaft and it was going to such a major expense that I bought a new Trans. They took mine as a trade in. Just beware!! Most of the problem was they were going to have to modify new parts to fit. Then you have one off stuff, in an old trans. If you call ask for Smitty. He is there 5speed guy and has been around for awhile. Others will say they can do whatever, but then you send your stuff and find out after the fact. Serial numbers, and pictures were also sent prior to finding this out. If you call ask Smitty if they have any trade-in's They will have all the updates and new parts, at a lower price.

Sean