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Old Oct 26, 2004 | 03:46 PM
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Unhappy ??'s about 400 crank

Guys I am building a 351m into a 400 and looking for a crank has turned out to be more than what I bargained for. I have called locally and was able to make some headway but have a question. I called NAPA and they came up with 2 numbers for a 400 crank. One of the forging numbers that they showed was like this
5ma or a 5mab or a 5mac.............the other was a cite-b or something like that. Does anybody know which one to get or what is the difference if it matters. This made me curious cause the "cite-b" or whatever was twice the price of the other. Does this make any sense?

Thanx
 
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Old Oct 26, 2004 | 06:17 PM
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Don't know if this will help. My NAPA receipt just gives a #15658 recon crankshaft. List price $255.62, Net $192.88 plus $40 core. Came with bearings.
 
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Old Oct 27, 2004 | 09:09 AM
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5M, 5MA, 5MAB are definitely the Ford casting codes for a 400 crank. I've never heard of a casting code of C1TE-B or CITE-B for a 400 crank or any 335 series engine. 351M casting codes are 1K, 351C codes are 4M or 4MA.
 
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Old Oct 27, 2004 | 09:14 AM
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What is the difference between the 5M, 5MA and the 5MAB?


I finally got in touch with the right person at Northside Engine in Lafayette, which is about 45 minutes from here.

$235.95 crank and bearings
$15 core <------
$20 freight

He has to order it, go figure, but should be here in a couple days.
 

Last edited by raptor660rr; Oct 27, 2004 at 09:16 AM.
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Old Oct 27, 2004 | 10:38 PM
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One more question. Who has actually built a stroker out of the 400 with the 240 I6 connecting rods and stuff? Is it worth it compared to a "straight up" 400? I mean, are the performance gains worth it or not really. I am going through the whole engine and it is at the machine shop right now getting the clean up and the works. But still haven't decided what route to take with the engine. To stroke or not to stroke..................that is the question.
 
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Old Oct 27, 2004 | 10:57 PM
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If you go digging on this "information superhighway" of ours you will eventiually find yourself staring at "Kenny moore's 434". Teal and tumultious !!
 
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