(800) 853-2651
SHOP NOW

NAA overdrive

Neither the 8N nor the NAA had an "overdrive". Do you mean a Sherman step-up auxiliary transmission? If so, then I think the answer is yes. The NAA and the 8N share the same part numbers for the transmission input shaft and related parts. Those part numbers didn't change on the 4 speed transmissions until the input shaft changed from 10 spline to 15 spline in 1958 with the '01 series.

But there may be other factors I am not aware of that might influence the answer, so anyone with more expertise please correct me if my answer is incorrect.
 
Yes But if you're adding a sherman step up you might need to rework the handle because it comes out too close to the starter bump out in the NAA trans. The sherman combo from an 8n
will fit without any problems.
 
So is the Sherman transmission in an 8N or NNA the same as a 800 series except for the different imput shafts? I know early ones are 10 splines and 15 splines in 800 series.
 
No, Change was made in the early 01 series. It would be the same 10 spline input shaft for the 8n/NAA/800. Unless somebody changed out the flywheel/clutch and input shaft. Parts get switched around on these old tractors.
 
You must log in or register to reply here.

Similar threads

John P.
Another one followed me home!
Replies
9
Views
482
1955
1955
John P.
Can Anyone Identify These Weights?
Replies
5
Views
339
John P.
John P.
John P.
NAA Transmission Fluid Level Plug
Replies
2
Views
189
John P.
John P.
C
1953 NAA
Replies
12
Views
967
Check Break
C
John P.
Another Tiller Question
Replies
6
Views
480
Hemmjo
Hemmjo
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top