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Old 09-11-2008, 09:53 PM
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Chevy Engines (Trucks)

I was rebuilding a 75' 350 which ended up having a 307 crank in it when I got it.
So I think I will put the 350 rebuilt heads on my 87' 350 truck. My 65' Chevy
Fleetside has a 283 in poor condition with oil sludge in it. So I thought about rebuilting the 283. However since a 307 crank and a 327 crank have the same casting number, can the crank be put into the 283 to make a 301? I hate to throw away the 307' crank which checks out on measurements.

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Old 09-11-2008, 10:40 PM
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The 283 is a small journal and the 307 is a medium journal, the crank could be turned down to fit,rods will also be different, or you could find another 350 block and build another 327. The 307 crank may be forged.

Shane
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Old 09-11-2008, 10:43 PM
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A 307 crank into a 283 makes a 307. If you want a 301 you'll have to have the cylinders on the 283 checked and bored .125 over to get a 4.00" bore then reuse the original 283 crank. Yes this has been done in the past on earlier 283s. Later on Chevy released a similar engine from the factory in the 67-69 Camaros with the same bore and stroke, they called it the 302.
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Old 09-11-2008, 11:12 PM
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Not all 283 blocks have clearance for a 307/327 crank.

A 307 crank in a 350 block is a 327, and IMHO that would go nicely in a '65 truck.
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Old 09-12-2008, 06:19 AM
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Unfortunetly Gm didn't put forged cranks in 307s But I 'm wondering why you don't just build the 327 instead of the 283, 301 You said the crank checks out and ther is no replacement for displacement
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Old 09-12-2008, 05:24 PM
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Quote:
Originally Posted by jimfulco
Not all 283 blocks have clearance for a 307/327 crank.

A 307 crank in a 350 block is a 327, and IMHO that would go nicely in a '65 truck.
The guy who worked on my block and guts, told me that the pistons were riding too low in the cylinders.
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Old 09-12-2008, 05:25 PM
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Quote:
Originally Posted by jimfulco
Not all 283 blocks have clearance for a 307/327 crank.

A 307 crank in a 350 block is a 327, and IMHO that would go nicely in a '65 truck.
I am new at this so what is an IMHO?
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Old 09-12-2008, 05:31 PM
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in
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