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Old Apr 15, 2005 | 10:30 AM
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piston selection 400

getting ready to put my 351m back together. have a 400 crank, early cleavland 2v heads, decent cam, edlbrock intake and 600 carb. the block is 30 over. my question is what pistons to use. flat top? dished ? stock 30 over? anyone have a suggestion thanks in advance......
 
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Old Apr 15, 2005 | 10:57 AM
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Moved to proper forum.
 
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Old Apr 15, 2005 | 02:50 PM
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Usually the easiest better than stock piston to find is the Badgers. They are a flat top and will bring your compression up to about 9:1 assuming you have not changed any of the other related parts, ie heads and block. There are a few places to get them. Do a google on Badger flat tops for a 400 ford.
 
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Old Apr 15, 2005 | 02:59 PM
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hey thanks, however i have changed the heads to some 71 cleavland 2v heads so i still need to know whats the best choice..
 
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Old Apr 15, 2005 | 03:27 PM
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That should not not affect the piston selection. The 2v cleveland head has a chamber that is 2.2cc smaller than the 400 head increasing the cr by about 1/3 of a point.
 
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Old Apr 16, 2005 | 09:42 AM
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I am building the 400 in my 77 F250.

I am going to use Badger flat top pistons when they get here.
Found a set through an FTE site member and they should arrive soon.

I was lucky, In my search I called from Washington state to parts houses in New York and everyone was waiting for Badger to poor a new batch and get them out. One man I spoke with said he had three motors on stands waiting for those pistons.

Badger is the only maker of a flat top piston for the Ford 400 or 351m all the others are dish.

I am also useing 71 2v Cleveland heads on my build. Must have been a good year..

Get your order in ASAP...
 
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Old Apr 16, 2005 | 09:51 AM
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thanks for the info guys... gonna get those Badgers comming.... does anyone know what the cr will be with the cleavland heads and the 30 over flat tops? thanks again.....
 
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Old Apr 16, 2005 | 07:32 PM
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Should get you about 9:1 or just over. Go to www.kb-silvolite.com and use their calculator for cr.
 
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Old Apr 17, 2005 | 08:25 PM
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According to Tom Monroe's book, the 351C-2V heads have 76.2 cc chambers compared to 78.4 on the 351M/400 heads. This should produce about 9.2:1 CR in a +0.030 motor.
 
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