Easiest way to tell is just go by engine size. The rest can be very misleading. The only thing that's changed is that an overhead-valve version of an engine can make a bit more power for it's size as compared to a flat-head. A 10 horse flat head often gained 1.5 to 2 horse when switched to overhead valves. Note also that diesel engines always have less power then gas engine if aspirated the same and with same bore and stroke. That is why tractors sold at a certain power level will have bigger diesels to make up for the loss.
20-30 years ago -
A 3 horse engine was 7 3/4 cubic inches or 127 ccs.
A 4 horse was 10.5 c.i. or 172 ccs. A 5 horse was 12 c.i. or 197 ccs. A 10 horse was 24 c.i. or 393 ccs. A 16 horse was 32.4 or 531 ccs.
Besides all that, direct-drive push mowers often post specs at RPMs that engine are not legally permitted to run due to blade-tip-speed regs.
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 - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
... [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.
