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12-03-2017, 11:00 PM
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#1 |
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Registered User
Join Date: Sep 2017
Location: Red Oak Iowa
Posts: 225
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Need help decoding a small block
Pulled it out of a what I am fairly sure was a 67 Chevy 1 ton. Might have been a '68 I wouldn't be able to tell the difference if there is one. "Supposedly" was the original motor. Casting number 3896944 which my book says 62-66 283. Date code on back of block appears to be K23 with either a 6 or an 8 for the year. Front suffix is a clear WA which my book says '65 283 or a '68 307 or a '69 350. I think I can discount the '69 350. But why no WA for '67 283 which I am fairly sure it is. I realize some of these codes and casting number books are a little messed up, does someone have a book that is the final word on whats what?
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12-03-2017, 11:08 PM
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#2 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,742
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Re: Need help decoding a small block
Does it have a road draft tube or the casting for one beside the distributor?
LMC shows WA as a 65,66,or 67. http://www.lmctruck.com/icatalog/cb/full.aspx?Page=10 |
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12-03-2017, 11:36 PM
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#3 |
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Registered User
Join Date: Sep 2017
Location: Red Oak Iowa
Posts: 225
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Re: Need help decoding a small block
Sort of, doesn't have the road draft tube but has the fitting and a rubber hose back to the carb base. Does that tell you anything?
I didn't know LMC had that info. I see that it also shows a WA for a '68 307. Might have to get a picture of the date code and see if you guys can tell me if it is a 6 or 8. Please please please don't let it be a 307..... |
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12-04-2017, 12:10 AM
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#4 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,742
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Re: Need help decoding a small block
Relax!
IIRC the 307 didn’t have a road draft set up. And I think the cap and hose started in 66. So it could be a 66 or 67. |
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12-04-2017, 12:52 AM
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#5 | |
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60-66 Nut
  Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,252
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Re: Need help decoding a small block
What's wrong with a 307? I would rather have a 307 over a 283 any day. A 307 will produce more torque, which is what you need to move a heavy truck down the road.
Quote:
__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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12-04-2017, 01:39 AM
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#6 |
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Registered User
Join Date: Oct 2016
Location: san bernardino ca
Posts: 1,611
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Re: Need help decoding a small block
I have a 283 i will check the numbers or other thangs on the motor.
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12-04-2017, 08:24 AM
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#7 |
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Registered User
Join Date: Nov 2009
Location: Galt, Calif
Posts: 2,437
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Re: Need help decoding a small block
WA----1965 to 67 chevy truck, C10/20/30 283. from the Mitchell interchange book.
__________________
`64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip |
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