It is probably is as simple as the 30 series was on the way.
Remember, the 4520 was introduced in 1969, 4 years before the 30 series. THe 4620 was an improved 4520 (added intercooler, altered air cleaner, new number as the 4520 got a REAL bad wrap real fast). The 4620 PS required no new parts that weren't already designed.
The 4000 was the same... it was essentially a 4020 lightened up.
The 4320 was a design that required some new parts... the dash etc would have needed to be redesigned to accomodate the PS transmission., as those components are not the same as a 4020.
The 4320 was introduced in 71, with an engine very similar to the 4520 of two years prior.
Looking at production numbers in the early 70s, syncro usually out sold PS by two to one, perhaps closer to 3 to one. I can understand why a horse to be in the line for 2 years or less wouldn't get the option.
Consider this, too- Deere had a PS in a scraper tractor that used a 531 engine. Yet there is no PS 5020 or 6030. The 4320 wasn't alone.
And I am not certain, but I don't think there were PS 4030s either. The PS from a 3020 probably would've worked...
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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. [ About Us ]
Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
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.
