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  #16  
Old 03-13-2005, 06:44 PM
culiv culiv is offline
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Actually, it isn't. We had a similar thread (http://www.ford-trucks.com/forums/sh...98#post2428098) running a couple of weeks ago about the same issue. There was some debate here about the size of the bore being too large and I just threw in the 352 pistons as a possibility. I don't have any idea if they would fit and if they did, what would happen to compression and valve clearance. It was simply a random thought.

I still like the idea of a 335 series Boss 429 or Cobra Jet (4.06 bore, 4.15 stroke, 351 boss/CJ heads). Weight savings would be about 150 pounds over standard 429/460 motor and about 50+ pounds over an FE.

Last edited by culiv; 03-13-2005 at 06:53 PM.
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  #17  
Old 03-13-2005, 07:12 PM
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And, as 77_F150_4x4 pointed out, how about a 434 stroker kit already put together (http://www.strokerkits.com/351___400m.htm) for $1895.
Includes custom forged pistons for 9.5 compression, 4.200 stroke crank (custom grind and cam cut 400 crank), 6.250 Scat I-beam rods, rod and main bearings, and rings.
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  #18  
Old 03-14-2005, 07:59 AM
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Tim is working on a stroker motor with a 4.25" Eagle forged crank, SBC H beam rods (6.25") and a forged 351M piston. These are all off-the-shelf parts. A 440 cubic inch stroker can be built with a +0.060 overbore. Add alloy heads, intake, etc and you have a lightweight big cube motor built for whatever. Did someone say supercharge?
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  #19  
Old 03-17-2005, 10:20 PM
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good thinking guys, a 440 stroker would be awesome. I still think that a good overbore and the long rods of the 400 and the 4 inch stroke would work good for some higher rpm power.
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  #20  
Old 03-17-2005, 11:06 PM
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Dan,
The rods will be 6.657".

That's all I better say.
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  #21  
Old 03-18-2005, 12:32 AM
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Kopfenjager,

I see some good points in your postings. When I get some cash built up, I think I'm gonna build a 400 based big cube motor, and I'm gonna do it the right way- BIG BORE baby! I'm Planning a lightweight 4 inch windsor crank, Oliver small journal BBC rods, and custom pistons at 4.155 bore and really high compression. Over 150 lbs. off the nose, good power, and no one would ever expect it. This is sounding better all the time.
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  #22  
Old 03-18-2005, 02:37 AM
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I took three blocks down to be sonic tested today, and none of them were any good.

now I'm out $300... but I have three perfect 400 cranks that mic'd good... I don't know how that works.. but oh well.
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  #23  
Old 03-18-2005, 05:05 PM
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Quote:
Originally Posted by There Goes The Neighborhood
Kopfenjager,

I see some good points in your postings. When I get some cash built up, I think I'm gonna build a 400 based big cube motor, and I'm gonna do it the right way- BIG BORE baby! I'm Planning a lightweight 4 inch windsor crank, Oliver small journal BBC rods, and custom pistons at 4.155 bore and really high compression. Over 150 lbs. off the nose, good power, and no one would ever expect it. This is sounding better all the time.
I'm using Oliver rods. They wouldn't build me a small journal BBC rod that would fit the Windsor stroker crank that I used in my 400FMX block. I'm using custom 2" journal rods but if I would have gone up to a 2.1" I still could not get a BBC rod. I wanted a 7" rod but you can't get a "small block" rod that is 7" long.

--J
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  #24  
Old 03-18-2005, 10:39 PM
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They have them up to 6.8", and with a slight upstroke(4.1), it gives a fairly reasonable compression height. They list them as a big block, small journal rod(2.1" journal.).
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  #25  
Old 03-19-2005, 03:21 AM
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now we are thinking! Sorry to hear about the blocks, I think its bad luck cause all I've done but 1 (1 out of 3 actualy) was bad and it was a mcc block and during the bad years. I think 4.155 is feasible with BBC396 sleeves and a copper head gasket. Remember though that the bore is finished something like .01 over the desired bore, gives space for rings. So the 4.155 bore gasket would overhang about .005 on each side of the bore, or all around the bore if that is eiaser to picture. I like the overbore idea with a massive stroke to be a awesome idea. it's hard to keep up with the weezers when they can buy a 4.2 inch bore block for a couple grand.
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  #26  
Old 03-19-2005, 10:07 AM
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Matts72, do you mean the blocks are not good to be bored .030" or what? then they are candidates for oversleeving? the good news is that you have good cranks, you can always sell a couple of them to recover some of the $300?
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  #27  
Old 03-19-2005, 06:55 PM
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yeah, were the blocks cracked? or just major core shift? maybe they are usable for other things like sleeving. Just a thought. ok I stole the thought from grclark351. But it is a good thought.
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  #28  
Old 03-19-2005, 07:32 PM
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Two of the blocks would need to be .060" over to clean up, .080" to be straight, too far in my opinion... one block was split in the main webbing.

I suppose the two blocks would be ideal for this test... I just don't have the money to throw around at the moment.
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  #29  
Old 03-20-2005, 01:05 AM
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and montana is too far to ship a block to Oregon or I would take one off your hands. I wonder what that would cost? 400 blocks are almost given away around here so it would have to be cheap!
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  #30  
Old 03-20-2005, 08:34 AM
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I have put the figures together for making the 400 a big bore. Problem I for see is to acheive the 4.125 bore starting point would require installing sleeves that would be with .005" of touching. Now the problem I see is the integreting of the deck of the block. When you start pulling 100 ft. lbs. of torque on the head bolts, is it going to move on the sleeve? The top is starting to look like swiss cheese. I have thought about a flanged sleeve if that would give any strength. Question is if you can all ready get 440 cubes simply by stroking it, is it worth all the labor, parts and risk "is it going to work" to get an extra 20 cubes?
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Old 03-20-2005, 08:34 AM
 
 
 
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