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Posted By: Leo engine casting number - Sun Jun 10 2018 06:15 PM


A friend of mine just brought home a gorgeous 1953 GMC half ton 5 window. But it's not correct in many ways. The engine casting number says 5845383. I can't find that number anywhere, it is a six cylinder, looks like a 235.
Posted By: tclederman Re: engine casting number - Sun Jun 10 2018 07:23 PM
Might 5845383 be 5845363?
http://home.znet.com/c1937/Cast.htm
Posted By: Leo Re: engine casting number - Sun Jun 10 2018 09:53 PM


Thanks Tim, the number looks more like a 6 than an 8 but I'm thinking it must be an 8. Did those engines have the 3 threaded holes on each side, thinking for motor mounts? Were those holes there before the Chevy V8?
Posted By: tclederman Re: engine casting number - Mon Jun 11 2018 12:09 AM
Wait to hear from someone else.

I am not sure when the side motor mounts started being used on Chevrolet/GMC engines.

An eight cylinder engine became available in late 1955.
Posted By: 52Carl Re: engine casting number - Mon Jun 11 2018 12:15 AM
Car 235s had threaded holes on the side mounts.
Posted By: Leo Re: engine casting number - Mon Jun 11 2018 12:41 AM


Originally Posted by 52Carl
Car 235s had threaded holes on the side mounts.

Do you mean before the SBC? In 1954?
Posted By: EdPruss Re: engine casting number - Mon Jun 11 2018 12:51 AM
Is the engine a Chevy or GMC? Chevy's are about 3" shorter than GMC's so if the fan is way short of the radiator, Chevy, if about .75" short of the radiator-GMC. GMC's SN, r side, stamped on pad by starter, start with displacement, I. e. 228xxxxx, etc.

Ed
Posted By: Mike B Re: engine casting number - Thu Jun 14 2018 04:52 AM
Chevrolet started using the side motor mounts in 1958 on the passenger cars, the trucks still used the front mounts however they did have the bolt hole boss' cast but not used. 1955 thru 1957 SBC V8's did not have the side mount boss'.

I don't know when GMC switched...

Mike B smile
Posted By: 52Carl Re: engine casting number - Fri Jun 15 2018 02:12 AM
Originally Posted by 1953 panel



Do you mean before the SBC? In 1954?

Yes.
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