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Kirkham Motorsports

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  #1 (permalink)  
Old 07-29-2010, 05:39 PM
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Default found a siezed 429 in a junk yard

I found a seized 429 in a junk yard yesterday...was wondering if it would be worth trying to do anything with it.How far can you take them out(if I can get the pistons out)?Is there any years that are better than others...if so what numbers should I be looking for?The price is right!!!Thanks Steve
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Old 07-29-2010, 06:04 PM
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The early ones are a little better. The blocks are all the same otherwise
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Old 07-29-2010, 06:06 PM
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Most of them will actually take an .080" overbore.....and a LOT of stroke. If it's a D0VE or a D1VE block, I'd probably snag it if the money is right and it's not windowed or rusted solid.

Reusing the stock crank/rods, adding a new set of pistons, cam, and a good set of heads would probably make you a really nice, strong engine.
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Old 07-29-2010, 06:09 PM
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What years would that be and what heads should I look for on it...assuming that is what make the differance.
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Old 07-29-2010, 06:11 PM
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1970-1971 are among the best, but if you're not going for an 800hp drag engine, I wouldn't worry too much about cast numbers.

The factory heads are lacking and require porting/machine work to really make some power. Depending on your budget, there are some excellent aftermarket heads out there.
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Old 07-29-2010, 06:18 PM
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Get yourself a big tin of Marvel mystery oil and a can of patience. You'll be amazed what you can save.
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Old 07-29-2010, 06:22 PM
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Thanks Brent,I'm go and have a closer look...it is literaly in a brush pile...but just pushed there lately.Doesn't look to have any external damage that I could see,the oil pan isn't pushed in or anything like that...I'll let you Know what I find...as far as price all I have to do is hall it away.
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Old 07-29-2010, 06:24 PM
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If it's free, then absolutely go for it...
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Old 07-29-2010, 06:26 PM
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Mickmate,I'll head to the store tomorrow and ask for some.
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Old 07-29-2010, 06:33 PM
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You may wanna jerk the pan off of it just to make sure there's nothing mechanically wrong inside to lock it up. If there's not, then I've heard good things about the Marvel oil. Let it soak for a week or two...
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Old 07-29-2010, 06:41 PM
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I think the recipe is here on the site somewere...anyone remember it(talking about a mixture someone was talking about not to long ago that was really good for this type of job)
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Old 07-29-2010, 06:53 PM
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There are other solutions that will desolve he rust. I would look into them!
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Old 07-29-2010, 07:21 PM
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ng8264723,found the recipe...1 part ATF--1 part acetone
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Old 07-29-2010, 08:22 PM
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free is the best price i have ever found when it comes to engines....
buy the marvel mystery oil.....the ATF/Acitone works but the acitone
evaporates.....leaving only the ATF.....

Brents correct on pulling the pan first.....then pull the heads next....
you may find something in the top of the cylinders thats keeping it
from turning over.....good luck and keep us posted on your progress...
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Old 08-22-2010, 08:23 AM
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Quote:
Originally Posted by 133bus View Post
ng8264723,found the recipe...1 part ATF--1 part acetone
This is it,and it is supposed to have twice the freeing up power of the next best "Kroil"I have the formula soaking in some broken bolts on one of my antique John deere tractors.
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Old 08-22-2010, 11:48 AM
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Just got the motor Thursday nite and started to take it apart yesterday...not looking good sofar..removed oil pan,valve covers,exhaust manifolds and intake...water has gotten into every part and there was a snake skin under the valve pan cover(true).The second thing I saw was that there was a pushrod bent on #8 cylinder...not good. I wil be taking the heads off tomorrow and let you know what I found
Steve
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Old 08-22-2010, 01:04 PM
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If the block turns out to be a survivor, you might check out Jon Kasse's latest Boss 429 head setup....

http://www.jonkaaseracingengines.com/
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Old 08-22-2010, 01:25 PM
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Do you have any idea if it is really seized (oil starvation while running), or just seized from rust from sitting unused for too long? Obviously, there is a world of difference.


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Old 08-22-2010, 01:53 PM
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a bent push rod is not all that serious.....could be a stuck valve.....
keep your eyes open for the rest of that snake....hahahahahaha
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Old 08-22-2010, 03:03 PM
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As long as the block is not cracked you will be fine,not a big investment,think of the possibilities.Stroked heavy breather hang on!
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