I've got three 400 s.b.c.'s. Two of them have three freeze plugs and one has two freeze plugs. One of the three freeze plug blocks has 4-bolt. I don't believe there are any absolutes or here. I am pretty sure, however, that the 4-bolts were made during the first couple of years of 400 production. You hear all kinds of rumors and b.s. about how you can identify this or that part based on some external clues, but you don't really know until you start taking it apart! I've seen too many things that don't follow the rules!
ALL 400 s.b.'s, as they came from the factory, were externally balanced. Like the one guy said, you can buy a bolt on balance plate to use any automatic flexplate. I will say however that the externally balanced flexplates and dampners are readily available and not much different in cost. Just go to Summitracing.com or the equivalent. I know Speedway motors sells the balance plate but I'll bet you can get that from Summit as well.
For any street motor, two bolt is fine. Put studs in the bottom end if it will help you sleep at night. Keith Black has affordable pistons that will allow the 350 rod in the 400. The 350 rod has more meat on the big end; just what you want for hot rod use.
You can use any small block head, just be sure to add the "Steam Holes". Use a head gasket as a template and drill away! Note that the 400 has it's own head gasket for the larger bore and steam holes.
I'm running one of the aforementioned 400's now in my drive to work car. The short block was left over from dirt track racing. With overdrive, 2.73 gears and a mild cam I'm getting 23 mpg on the highway!
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 - On the Road with Dave Gohl: Auction Musings - by Dave Gohl. I was thinking the other day about all the auctions I've been to in the last few years. There've been many. Some have been very good, some have been well, disappointing to say the least. But no matter how good or bad auctions may be, we always seem to stay until the item we've come for or are interested in is on the block. I've been to some auctions near and far. I think the furthest has been the Two Cylinder 7 in the Amana Colonies last year. Lots of stuff, lots of people. I've also atten
... [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.
