360 crank? 390 crank??

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Old 06-04-2005, 05:49 PM
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Unhappy 360 crank? 390 crank??

I broke my 390 apart The other day, For a rebuild before I transplant it into the truck.
Anyway when I pulled it apart I noticed that the pistons were about .250 in the hole??
I am thinking that it has a 360 crank in it with 390 pistons.
The number on the crank is 3U.
Can anyone tell me if this a 360 crank or what my problems are..

Thanks
John
 
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Old 06-04-2005, 06:55 PM
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3U- 390 crank - 2U and 2UA- 390 crank - 1U-1UA-1UB-428 cranks

1A and 1B cranks Police and Scj Cranks....

Russ
 
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Old 06-04-2005, 08:02 PM
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You've probably got a 390 truck motor.
 
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Old 06-05-2005, 08:59 AM
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Thanks for the info gents...
 




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