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Old Oct 1st, 09, 05:54 PM
Duane 72 Duane 72 is offline
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Default 72 engine code ?

Hello my name is Duane I got a 72 Nova that lived its life in SoCal, It now lives in Northern Alberta canada. Looking up codes gave me alot of info Tag on the firewall, VIN , its a 350 2 brl auto , The code on the engine is as follows Casting 3970010 ( 4 bolt main ) the one stamped on the passengers side up front is "48866" according to the net it should have a Letter prefix but it dosent, It has been bored and stroked to a "383". Is it common to remove codes ? Or is the motor just different ?
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  #2  
Old Oct 1st, 09, 07:30 PM
SHIFTY4
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Default Re: 72 engine code ?

look for the block suffix code on the passenger side front pad (block/head mating area) and then compare here: http://www.nastyz28.com/chevy-engine...ngs.php#suffix

that should tell you what the block originally came out of... not that it really matters now though... right ?
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Old Oct 1st, 09, 07:50 PM
Big Dave Big Dave is online now
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Default Re: 72 engine code ?

If the block has been run through a machine shop they often cut 0.015" off the top to square the block before boring it out and line honing the mains. This is the minimum that is done to get a good block back ready to build. Depending upon which corner was high they may have cut a lot of the engine's identification numbers off. If you had the block fully cut for a zero deck after squaring it up all hope of the numbers being ledgable are gone as they were cut away reducing the block height the 0.025-0.028" needed to obtain a flat zero deck.

Big Dave
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Old Oct 2nd, 09, 10:07 AM
Duane 72 Duane 72 is offline
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Default Re: 72 engine code ?

Thanks for the info, Your right it doesnt matter now but I was curious as to what it started life as.
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