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Farmall & IHC Tractors Discussion Forum
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450 block

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Devin M

03-13-2006 16:56:59




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what is the bore on a 450 block. what is the max u can bore a 450 block to?




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Devin M

03-13-2006 17:18:29




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 Re: 450 block in reply to Devin M, 03-13-2006 16:56:59  
The pistons are 4.3 inch bore that i wont to use.



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Janicholson

03-13-2006 18:04:04




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 Re: 450 block in reply to Devin M, 03-13-2006 17:18:29  
All castings have production tollerances that are caused by cores or fixtures shifting when the cast is poured into the mold. Shrinkage and seasoning of the block in the first 2weeks of its existance, and the relief of stress from machining all add up. To be reasonable, the metal should be .200" (some say .150" they are risk takers) thick in all places. Sophisticated equipment can use X-ray technology, or ultrasound, to determine the real thickness of the walls, tested at intervals on all cylinders.
The piston pin location and diameter are also fundamental to success. Rod length, and offset are important considerations.
I do not know the risk on that engine, others will add that element. Good luck,
JimN

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FatRedneck

03-13-2006 17:09:46




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 Re: 450 block in reply to Devin M, 03-13-2006 16:56:59  
a 450 block without sleeves should be as large as you ever need to go, butif your pushing your luck with boring the cylinders, get it bored as far as you can safely, idont know the exact specs, and get chevy pistons to fit. Janicholson, Chads, or the tractor vet can help you more than i can, just thought i'd put my two cents in.



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the tractor vet

03-13-2006 18:25:12




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 Re: 450 block in reply to FatRedneck, 03-13-2006 17:09:46  
Well we have gotten kinky and one day while drinking things over up at and old buddy of mines machine shop we took a block and just started boring till we where way into the water jacket then we found some sleeves and machined them to fit . Did that again on a MM and used 855 cummins truck sleves with a 4 allison .060 over 5.500 or 5.560 pistons and some massey rods and a welded up offset ground crank and came up with 609 cu. in 4 banger MM but neer wanted to destroy a farmall block the ones that we were playen with were junk as they had filled with water and froz from the inside out and had big chunks broken out . Now if ya want to get a littel gooffy first ting ya need to do is get a progressive size book that has all sleeves and pistons rings bearing in progressive sizes and drink it over a bit.

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supermpuller

03-13-2006 18:55:01




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 Re: 450 block in reply to the tractor vet, 03-13-2006 18:25:12  
There are some M's in div 4 and 5 running over 600 cu, they start with a 450 block 585 cu. are quite common. 360 cu. is a good motor 450 block stroked 1 in. 4.280 bore, 90 to 100 hp. they hold up tractor pulling, but I wouldn't plow with them all day, the old MW stroker motor was good for farming 326 cu.



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the tractor vet

03-13-2006 20:06:28




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 Re: 450 block in reply to supermpuller, 03-13-2006 18:55:01  
Yea i have seen them and they are about a 25-30 run motor then the pin falls out and ya have alot of pices and parts . And like i said just how much do you want to spend to win a seven dollar trophie . I can get more then enough out of a 4 1/8 sleeved engine for what we want to do and if the day ever comes again then i'll turn colors and build a MM and we will build a monster that will live for a long time for not a bunch of buck , myself i have better places to spend money then on a 20 or 25000 dollar Farmall engine to try and win a seven dollar trophie that will set with the rest of them collecting dust on the shelf .

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