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Old 05-06-2017, 03:20 PM   #1
LukeSkywanker
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Question Wacky 350 Block ID - Help Please

Yanked the 350 outta my '78 C20 for a rebuild. Don't think it is the original engine. Tried to research the stamped block numbers, but can't match them to anything. Plus, there is a double stamp on one of the numbers. Damn! Here's a pic of the stamping. Can anyone decipher this for me? Thanks in advance.

http://imgur.com/a/dOr6y
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Old 05-06-2017, 03:51 PM   #2
mongocanfly
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Re: Wacky 350 Block ID - Help Please

Look on the top back of the block on the passenger side directly behind the head...there should be a cast (not stamped) set of numbers..what are those ?..should be something like 397xxxxxxx or so..not sure what or where those numbers you have are
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Old 05-06-2017, 04:13 PM   #3
geezer#99
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Re: Wacky 350 Block ID - Help Please

Your suffix code DRL says it's a 1979 350.
http://www.nastyz28.com/gm-chevy-cod...s-suffix-4.php
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Old 05-06-2017, 04:53 PM   #4
sweetk30
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Re: Wacky 350 Block ID - Help Please

Quote:
Originally Posted by mongocanfly View Post
Look on the top back of the block on the passenger side directly behind the head...there should be a cast (not stamped) set of numbers..what are those ?..should be something like 397xxxxxxx or so..not sure what or where those numbers you have are
driver side not pass side.
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Old 05-06-2017, 05:41 PM   #5
mongocanfly
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Re: Wacky 350 Block ID - Help Please

Oooppps..driver side...check..been a long time since I looked at mine
looks like geezer wins the engine I.d. trophy

Last edited by mongocanfly; 05-06-2017 at 05:58 PM.
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Old 05-06-2017, 06:30 PM   #6
LukeSkywanker
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Re: Wacky 350 Block ID - Help Please

Thanks for the info. I'll look for the other numbers.
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