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Old 03-22-2016, 12:59 AM   #25
'68OrangeSunshine
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Join Date: Feb 2002
Location: Tucson, AZ USA
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Re: Chevy Six Cylinder Casting Numbers

Quote:
Originally Posted by shutto1972 View Post
It has the CS. Guessing that means 250? KS would be 4x4 with 292?
KS would be any 4x4 with an L6. Whether it was a 250 or 292 depends. 250s came with the standard package. If a buyer wanted a 292 it would be ordered by the dealer and built by GM and L25 292 L6 stated on the SPID.
The 292 L6 sometimes came in 4x4s, but oddly never in K/5s. At least I've never seen one. I guess GM didn't want to have to warranty a Dana 200 [300?] transfer case behind a torque monster. Go figure? Ford never had a problem putting their copy, the 300 ci ''I6'' in Broncos.
I have a project '72 Blazer body I want to put a 292 L6 into. I have the 292-4WD only diagonal crossmember. I have a SM465/T221 from a '68 gmc. Just waiting to win the lottery to get started on the project.

There is a very high probability you have a 250 L6 engine.
But to be sure look on the ''Dress Pad" behind the distributor. There should be numbers and letters stamped there. They will tell you the engine assembly date and any letters can be further decoded.
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Every 25 years I like to rebuild that 292, whether it needs it or not.

Last edited by '68OrangeSunshine; 03-22-2016 at 02:37 AM.
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