Crank id location
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Senior User
Joined: Dec 2003
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From: Washington State
Crank id location
I have my oil pan off(engine in truck still) rear seal replacement, I am looking for the 2t or 2.3 u numbers to decipher if its a 360 or 390. Can someone tell me which counter weight has the #s, I rotate the engine, crawl under to look, and am not seeing jack @%4@ 
Hotshot
Joined: May 2003
Posts: 11,141
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From: south louisiana
It's on one of them, I can't recall which. There's also a notch in the rear flange too, that is shaped differently between the 3.5 and 3.78 stroke cranks. You'll probably have to rotate the crank to find the numbers.
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