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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: ARshuter on February 09, 2015, 04:26:06 pm

Title: Help with decoding an engine block
Post by: ARshuter on February 09, 2015, 04:26:06 pm

 I was given an engine trans and transfer case, I know what the trans and transfer case are but not sure on the engine block can someone decode these stamped numbers and letters for me,  or give me a site to decode them myself. These are on the pad behind the alternator...

Its  V1021CLA    over     175410676     Casting number is  # 3970010

Thank you,  Alan

Title: Re: Help with decoding an engine block
Post by: Irish_Alley on February 09, 2015, 04:47:58 pm

http://www.nastyz28.com/sbchevy/sblock.html

Title: Re: Help with decoding an engine block
Post by: Irish_Alley on February 09, 2015, 04:49:55 pm

Flint oct 21 cla

Title: Re: Help with decoding an engine block
Post by: zieg85 on February 09, 2015, 04:51:47 pm

CLA comes back to a 73,74,77 350 4 bbl out of an automatic corvette

Title: Re: Help with decoding an engine block
Post by: Irish_Alley on February 09, 2015, 04:52:35 pm

year          casting     CID  Low High power      bolt
1968   3970010   327   -   -                   2                            
1969-79   3970010   350   185   370                   2 or 4                     car, truck, Vette

Title: Re: Help with decoding an engine block
Post by: ARshuter on February 09, 2015, 05:18:04 pm

Wow thanks guys.  I'm guessing by the VIN number it's a 77, the 1 being Chevy and the 7 be year of mfg., so Oct 21 1977 that would be a smogger motor, correct?  I'm guessing it's on the lower end of the power scale.
Irish_Alley you seem to answer all my questions I my have to PM you instead of tying up the space on the forum.  ;D  Thanks again guys much appreciated

Title: Re: Help with decoding an engine block
Post by: Irish_Alley on February 09, 2015, 05:28:40 pm

dont pm me lol. i dont mind trying to answer questions but i may not know or i may give bad info better to post them in public that way we know were giving you the best answers. if you want to ask a private question then feel free to pm me

Title: Re: Help with decoding an engine block
Post by: Irish_Alley on February 09, 2015, 05:30:33 pm

what vin?

Title: Re: Help with decoding an engine block
Post by: ARshuter on February 09, 2015, 05:46:30 pm

Quote from: Irish_Alley on February 09, 2015, 05:28:40 pm

dont pm me lol. i dont mind trying to answer questions but i may not know or i may give bad info better to post them in public that way we know were giving you the best answers. if you want to ask a private question then feel free to pm me

I was just messin with ya.   As to the VIN number I guessing the 175410676 is a partial VIN by the info on Nastyz28 site.  Just a guess