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#1
04-24-2011, 09:16 PM
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1967 302 crank
I have what I believe is a 1967 small journal 302 crank. In some books this crank (#3876764) is described as a cast (not forged) 283 crank. Does anyone else have a 302 crank with this number ? Where several different crank numbers used in 1967, and later over the counter ?
 
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Anders Stålklint. After selling my COPO 9561 I´m now a "postman" with the main project being a 1966 327 2 dr sedan Chevy II. 
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#2
04-24-2011, 09:21 PM
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Re: 1967 302 crank
As far as I know, that is a 283 only crank. 1967 302 crank is 3815822.
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Day 2 is Life.
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#3
04-24-2011, 10:09 PM
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Re: 1967 302 crank
How come it has the 302 specific cutout in the flange then ?
Was that done on 283 cranks also ? I thought that cutout had to do with different counterweights because of heavier pistons in the 302.
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Anders Stålklint. After selling my COPO 9561 I´m now a "postman" with the main project being a 1966 327 2 dr sedan Chevy II.
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#5
04-25-2011, 02:05 AM
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Re: 1967 302 crank
The crank that you have is a 283 forged/cast.The 302 crank # is 3815822,but there was another 283 crank that was forged/steel with a cast # 3876768.The 822 crank seems to be specific to the 302 only.
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#6
04-25-2011, 10:02 AM
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Re: 1967 302 crank
Sam, I believe it is like you say, they are pretty much the same.
I had one 302 crank before and I´m sure that one was #3815822. That one also had the cutout on the flywheel flange. No need to take a look in Colvins books anymore. If my #3876764 forged crank was made for a 283 there are too many things wrong in them. 
__________________
Anders Stålklint. After selling my COPO 9561 I´m now a "postman" with the main project being a 1966 327 2 dr sedan Chevy II.
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PeteLeathersac (10-31-2021) | ||
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#7
04-25-2011, 12:54 PM
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Re: 1967 302 crank
your steel 283 crank should work in your 67 302. Put it in and rev it up Copo!
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PeteLeathersac (10-31-2021) | ||
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#8
04-25-2011, 09:32 PM
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Re: 1967 302 crank
The 822 crank was used in 283's as well. I have had several of them. The 302 crank is tuffrided and the 283 cranks were not. Other than that there is no difference. I have a picture somewhere of an 822 302 crank in between 2 822 283 cranks somewhere if I can find it.
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Russ
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PeteLeathersac (10-31-2021) | ||
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#9
04-25-2011, 11:15 PM
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Re: 1967 302 crank
Russ, how would you spot a 302 crank in between two 283 cranks if they are all #822 cranks ? I guess I should let a reputable engine shop fix my crank and have it tuffrided then ?
I was thinking of putting in a thickwall Chevy II 283 block with high comp pistons and use it in the -66 2-door sedan. I´ll rev it up Sam ! [img]<<GRAEMLIN_URL>>/  [/img]
__________________
Anders Stålklint. After selling my COPO 9561 I´m now a "postman" with the main project being a 1966 327 2 dr sedan Chevy II.
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