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05-13-2010, 01:31 PM
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#1 |
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Registered User
Join Date: Oct 2008
Location: broken arrow oklahoma
Posts: 266
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SBC #'s
Can anyone tell me what the #'s that are stamped on the front of the block indicate? I'm pretty sure that it is for the year/make/model/ect. but how do you know what they mean? I have looked everywhere for this informaton and have struck out, so I call out to all my fellow Chevy lovers for some info.
Thanks in advance. |
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05-13-2010, 02:01 PM
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#2 |
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Registered User
Join Date: Aug 2007
Location: Redwood City, CA
Posts: 1,177
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Re: SBC #'s
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66 GMC Suburban Custom 66 Chevy K10 Suburban |
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05-13-2010, 04:48 PM
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#3 |
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Registered User
Join Date: Oct 2008
Location: broken arrow oklahoma
Posts: 266
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Re: SBC #'s
Yea I saw that site before and it helped me identify the block, heads, and crank, but unfortunately I have next to zero reading comprehension, so it is still a little foggy to me. I was hoping to find a site that I could just plug in the #'s and wham, bam, thank you mam, the magical answer would pop out. But hey thanks for helping out.
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05-13-2010, 10:01 PM
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#4 |
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Registered User
Join Date: Oct 2008
Location: broken arrow oklahoma
Posts: 266
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Re: SBC #'s
If anyone see's this the code I have on my block is TO725HC, I cant seem to find this code anywhere. Thanks
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05-13-2010, 10:05 PM
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#5 |
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Easy Does It
Join Date: Apr 2007
Location: Dirdy Mo , North Carolina
Posts: 450
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Re: SBC #'s
try www.mortec.com
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05-14-2010, 01:18 AM
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#6 | |
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60-66 Nut
  Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,250
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Re: SBC #'s
Here, scroll down this page to where you see the two HC's. It shows it to be either a 275 hp 327 or a 250 hp 350. I don't know just how accurate these listings are. It's been a while, but I'm pretty sure a couple 1965 300 hp 327's I had were the HC code. What heads are on the engine? casting numbers of both the block and heads might help narrow it down.
http://www.nastyz28.com/gm-chevy-cod...s-suffix-5.php This site shows the same thing though... http://www.73-87.com/chevy_ids/scode5.htm Quote:
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05-14-2010, 07:39 AM
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#7 |
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Registered User
Join Date: Oct 2008
Location: broken arrow oklahoma
Posts: 266
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Re: SBC #'s
Thanks guys, I always thought it was the first two or three letters on the stamping code that you used to look these up not the last. I know it is a 66 327 from the block, heads, and crank, just mostly wondering what the stamping indicated, like for each letter and each number.
stamp TO725HC block 3803352 Heads 3782461 crank 4577 Thanks guys. |
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05-14-2010, 03:07 PM
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#8 | |
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Registered User
Join Date: Jul 2009
Location: north Georgia
Posts: 50
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Re: SBC #'s
Quote:
Last edited by NtheFamily; 05-14-2010 at 03:10 PM. |
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05-14-2010, 03:58 PM
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#9 |
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Registered User
Join Date: Oct 2008
Location: broken arrow oklahoma
Posts: 266
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Re: SBC #'s
If there's another set of #'s I dont know where they are.
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05-14-2010, 04:36 PM
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#10 | |
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Registered User
Join Date: Jul 2009
Location: north Georgia
Posts: 50
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Re: SBC #'s
Quote:
On a Small Block Chevy: Machined pad in front of the passenger side cylinder head. Often hidden by the alterator. Look on this pad and you will find them. Not sure how clean your motor is so you might have to take a wire brush and a stick of chalk to see them. |
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05-14-2010, 09:15 PM
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#11 |
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Registered User
Join Date: Nov 2009
Location: Galt, Calif
Posts: 2,437
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Re: SBC #'s
If he can see the rear casting numbers at the drivers side behind the left head there`s only three differant castings for the early 327, which here are the last four digits for each, 1362, 2870, 0721, those were offered in `65/66.
T- tonawanda, 07- july, 25-25 day
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`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 Last edited by Rich 5150 69; 05-14-2010 at 09:18 PM. |
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05-14-2010, 09:52 PM
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#12 |
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"Where were you in '62?"
Join Date: Jul 2004
Location: Cleveland County, North Cackalacky
Posts: 5,013
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Re: SBC #'s
All the links below fellas are good sources.
That's where I got my info. Also check out the CSB cylinder Head Casting # thread I started. Got the same info I found from the links below as well. The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums Engine & Drivetrain: The History Of The Chevy Small-Block Motor http://67-72chevytrucks.com/vboard/s...d.php?t=354680 Ford 9" Rear Axle Information http://67-72chevytrucks.com/vboard/s...d.php?t=358081 Ford 9-inch Rear End Length Data http://67-72chevytrucks.com/vboard/s...d.php?t=354261 Big Block Chevy Engine Block Identification http://67-72chevytrucks.com/vboard/s...d.php?t=357304 Camshaft Tips & Definitions http://67-72chevytrucks.com/vboard/s...d.php?t=347969 ((((Transmission Specs )))) http://67-72chevytrucks.com/vboard/s...d.php?t=390542 Small Block Chevy Cylinder Head Identification Small Block Chevy Engine Block Identification http://67-72chevytrucks.com/vboard/s...d.php?t=353538 The (BEST) and (WORST) Small Block Chevys Engines Of All Time http://67-72chevytrucks.com/vboard/s...d.php?t=386581 Big Block Chevy Cylinder Head Identification http://67-72chevytrucks.com/vboard/s...d.php?t=357306
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05-15-2010, 08:58 AM
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#13 |
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Registered User
Join Date: Oct 2008
Location: broken arrow oklahoma
Posts: 266
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Re: SBC #'s
That's the info I was looking for, thanks. NtheFamily I'm use to seeing two set of #'s also, but this block only has one set. The block is out of the vehicle and is clean, so I know there is only one set of #'s. Big thanks to Rich 5150 69 for answering my question.
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