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07-29-2010, 06:39 PM
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CC Member
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Join Date: Jun 2007
Cobra Make, Engine: dd cobra,351w mild cam
Posts: 119
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Not Ranked
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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07-29-2010, 07:04 PM
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CC Member
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Join Date: Jun 2003
Location: Oakham,
Ma
Cobra Make, Engine: Kirkham 592
Posts: 578
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Not Ranked
The early ones are a little better. The blocks are all the same otherwise
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07-29-2010, 07:06 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
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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07-29-2010, 07:09 PM
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CC Member
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Join Date: Jun 2007
Cobra Make, Engine: dd cobra,351w mild cam
Posts: 119
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Not Ranked
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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07-29-2010, 07:11 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
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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07-29-2010, 07:18 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
Get yourself a big tin of Marvel mystery oil and a can of patience. You'll be amazed what you can save. |
07-29-2010, 07:22 PM
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CC Member
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Join Date: Jun 2007
Cobra Make, Engine: dd cobra,351w mild cam
Posts: 119
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Not Ranked
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. |
07-29-2010, 07:24 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
If it's free, then absolutely go for it...
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07-29-2010, 07:26 PM
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CC Member
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Join Date: Jun 2007
Cobra Make, Engine: dd cobra,351w mild cam
Posts: 119
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Not Ranked
Mickmate,I'll head to the store tomorrow and ask for some.
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07-29-2010, 07:33 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
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... |
07-29-2010, 07:41 PM
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CC Member
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Join Date: Jun 2007
Cobra Make, Engine: dd cobra,351w mild cam
Posts: 119
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Not Ranked
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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07-29-2010, 07:53 PM
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CC Member
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Join Date: Jun 2003
Location: Oakham,
Ma
Cobra Make, Engine: Kirkham 592
Posts: 578
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Not Ranked
There are other solutions that will desolve he rust. I would look into them!
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07-29-2010, 08:21 PM
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CC Member
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Join Date: Jun 2007
Cobra Make, Engine: dd cobra,351w mild cam
Posts: 119
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Not Ranked
ng8264723,found the recipe...1 part ATF--1 part acetone
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07-29-2010, 09:22 PM
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CC Member
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Join Date: May 2008
Location: Sacramento,Ca.,
Ca.
Cobra Make, Engine: Midstates (2001)
Posts: 1,724
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Not Ranked
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... |
08-22-2010, 09:23 AM
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CC Member
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Join Date: Nov 2001
Location: Windham,,
Me
Cobra Make, Engine:
Posts: 1,590
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Not Ranked
Quote:
Originally Posted by 133bus
ng8264723,found the recipe...1 part ATF--1 part acetone
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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. |
08-22-2010, 12:48 PM
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CC Member
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Join Date: Jun 2007
Cobra Make, Engine: dd cobra,351w mild cam
Posts: 119
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Not Ranked
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 |
08-22-2010, 02:04 PM
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Senior CC Premier Member
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Join Date: Nov 2004
Location: SoCal,
CA
Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader
Posts: 3,574
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Not Ranked
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/
__________________
All that's stopping you now Son, is blind-raging fear.......
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08-22-2010, 02:25 PM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
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.
.
__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
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Utinam logica falsa tuam philosophiam totam suffodiant!
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08-22-2010, 02:53 PM
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CC Member
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Join Date: May 2008
Location: Sacramento,Ca.,
Ca.
Cobra Make, Engine: Midstates (2001)
Posts: 1,724
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Not Ranked
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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08-22-2010, 04:03 PM
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CC Member
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Join Date: Nov 2001
Location: Windham,,
Me
Cobra Make, Engine:
Posts: 1,590
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Not Ranked
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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