I've replaced the governed Holley carburetors on several trucks (Chev 366, Ford 361) with the 650 vac. sec. carburetor..............
Before you begin tuning the carb. the engine needs to be running 100%........good/even compression, ignition system checked out, etc.............otherwise your best efforts will be in vain............
You'll likely need to re-jet the mains(possibly a different plate for the secondaries as well)..........Install the highest value power valve(10.5 "/Hg) available(providing the engine is in good shape 15"/Hg vacumm @ idle or greater)..............also ,the spring for the vacumm secondary diaphram may have to be changed to a heavier spring other wise the secondaries may never open under load.........adjustments to the accelerator pump may be needed as well.............
If you can find some Holley literature(cross reference books) you may be able to see what comparitive engine/carburetor combos of your vintage were using for jetting, power valve, etc. to give you a baseline...................
It would be a good idea to get a tuning guide for Holley carburetors, it will prove invaluable.......
There WILL be some trial and error involved but it can be done............
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 - Restoration Story: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
... [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.
