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Old 11-16-2006, 12:01 AM
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building a bbc 427

My question is can I use a crankshaft out of a 366 bbc? It is out of a grain truck. I am new to building BBC motors. I just want to make sure it will work before I buy the crank.

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Old 11-16-2006, 03:30 AM
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building a bbc 427

As far as I know the 366 truck crank is the same 3.76 inch stroke used in the 396,402 and 427.If it is a pre 1991 it should be of the 2 piece rear main oil seal type,and it is quite likely that it is also forged and cross drilled.You may need to have your rotating assembly properly balanced,I'm not an expert on this,but you might want to check with someone that is.
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Old 11-16-2006, 05:19 AM
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Yep the "Bob" weight of the 366, 396 & 402 is different from the 427 so a re-balance would be a must as Guy Hiltz stated... The crank casting number your looking for is 6223, there is another but dont remember the number off hand...? Also you can use any 2 piece seal 427/454 block to build this... Rods are the same as well...
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Old 11-16-2006, 09:54 AM
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ok great thx for the info
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Old 11-16-2006, 02:18 PM
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I got a 6223 off ebay for $100 and it didn't even need turned. You would be surprised what a good machine shop can do with a rusty hulk of a crank. Some people on here told me I got took my the machinist I used said I did good.
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