Crankshaft Bolt Specification ???

Crankshaft Bolt Specification ???

project74

Jeeper
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Location
Upstate SC
Vehicle(s)
1974 CJ5, 304v8... purchased 8/8/11
To anyone with older cj spec book\info...
What is the thread size on a crankshaft bolt for a 1974 CJ5 Renegade w\AMC 304 ?
Is it 1\2 20 (doesnt want to thread smoothly)
Is it metric M12 1.25 x 50 (same as the one removed...but old one has flat threads as if it was loose and moved around)???
any info helpful, Ed:chug:
 
Got it figuered out...1\2 x 20...fits well. The p.o. had the wrong bolt in the crank.
 

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