We are still asking:
What did you
get done on
your Bolt today
????
The question, initially posted May 23, 2005, was:
"Whatcha do on your Bolt
this weekend?"
After 51,906,997 views, 7378 replies over 185 pages, this thread in General Truck Talk is a happening! And it's not just weekends anymore.
Now with pictures
and No BOTS.
So ...
What did you get done on your Bolt today????
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Oh Lord, I just gotta find it....
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Jan 21st, 2020
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 engine casting number
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Joined: Mar 2007
Posts: 5,031
OP
'Bolter
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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.
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Re: engine casting number
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Joined: Sep 2001
Posts: 31,520
Bubba - Curmudgeon
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Re: engine casting number
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Joined: Mar 2007
Posts: 5,031
OP
'Bolter
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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?
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Re: engine casting number
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Joined: Sep 2001
Posts: 31,520
Bubba - Curmudgeon
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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.
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Re: engine casting number
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Joined: Mar 2010
Posts: 10,076
'Bolter
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Car 235s had threaded holes on the side mounts.
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Re: engine casting number
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Joined: Mar 2007
Posts: 5,031
OP
'Bolter
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Car 235s had threaded holes on the side mounts. Do you mean before the SBC? In 1954?
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Re: engine casting number
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Joined: Jun 2011
Posts: 4,465
'Bolter
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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
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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Re: engine casting number
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Joined: Mar 2004
Posts: 5,428
'Bolter
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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 
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Re: engine casting number
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Joined: Mar 2010
Posts: 10,076
'Bolter
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Do you mean before the SBC? In 1954?
Yes.
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