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Old 09-24-2007, 05:47 PM
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the good, the bad, and the ugly 400 sb?

i have heard that there are 3 different types of 400 sb made. there are good ones (the ones you want), ok ones, and bad ones (that you dont want). can anyone elaborate on this for me a little more. thanks

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Old 09-24-2007, 05:56 PM
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good bad and ugly

early 400s with 3 frost plugs on side with 4 bolt mains are prone to crack main webs, later versions have two plugs some three, and 2 bolt mains. 2 bolt mains are said to have more strength in webbing because the extra bolt holes arent there. ive heard that 2 bolts with main studs are as strong or stronger than 4 bolts.
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Old 09-24-2007, 06:18 PM
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Me, I`ll take my chances. As hard to find as 400`s are now, I`ll almost take any I can get my hands on. The 4 bolt blocks were only made from 1970 to 1972. From 1973 to 1980 they were all 2 bolt blocks. I perfer the 509 casting. But as said, I`ll run it if it`s a 4 bolt block. We used to have one, all we did was take it and have it stress relieved and didn`t have any issues. There are other areas you have to pay attention to also, have the block magnafluxed, especially on the decks, it`s not uncommon to find cracks coming from the steam holes, when this occurs the holes must be repaired with a hollow pin.
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Old 09-24-2007, 06:20 PM
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Hey DV....you know any cross country truckers? I've still got a 509 2 bolt, 30 over sitting in the pile. Been trying to get it gone for 2 years now! Cheap too! LOL
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Old 09-24-2007, 06:38 PM
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I know a fellow that does long haul, but I`m not sure if he`s ever out that way or not. I guess I should have been more specific, if the blocks scrap I don`t want it, I meant usable blocks lol. That drunk neighbor of mine had 2 400`s given to him free of charge and he won`t sell either, keeps on sayin what he`s gonna do with`em and that`s been years and years, nothings changed and it never will. Sure do wish he`d come off of`em, but I think they`ll sit there and rust before they ever move. You tryin to pull something on me when I don`t got any prozac J? How dare you try to take advantage of a mentally defenseless man! lol.
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Old 09-24-2007, 07:56 PM
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Quote:
Originally Posted by DoubleVision
You tryin to pull something on me when I don`t got any prozac J? How dare you try to take advantage of a mentally defenseless man! lol.
Nope, I learned a long time ago not to mess with the mentally challanged!

Like most, I "had" plans for it but decided to build another 350 again. Just didn't need to spend all the bucks to build this one for my daily driver truck.





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Old 09-24-2007, 08:19 PM
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Where exactally is the Heart of Dixie?
Shane
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Old 09-26-2007, 10:19 AM
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http://car-part.com/ there are usually some deals to be had on 400s on there not sure if there are any near you though
Shane
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