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Tractor Talk Discussion Forum

chevy heads id

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caleb in pa

03-01-2008 14:24:04




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I own a 400 chevy engine and cant id the heads, I know they are 1.94 1.50 cvalves, but dont know the cc's. Here are some numbers i found starting from left to right side.

- 3973483- ths is how i read it, the 3's ,may be 8's and the 8's may be 3's

-T- in the middle
-GM 7 - in the middle also
-C0NV3- Also found on the exhaust side- 993 5 483

Thats one head but the numbers are diff on both-
-3878498-
-C17 72-
-GM 34-
-C0NV4- thats all i could find-thanks-Caleb

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Steve in Oh

03-02-2008 06:48:04




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 Re: chevy heads id in reply to caleb in pa, 03-01-2008 14:24:04  
The link is www.mortec.com those are small valve smogger heads. Pretty much worthless. It would take way too much money to get power out of those heads if you're doing a performance build.



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2x4

03-01-2008 21:25:06




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 Re: chevy heads id in reply to caleb in pa, 03-01-2008 14:24:04  
type the motor block number or the head #'s in & hit search at the top of your screen. The sites for mortec & others will come up & you can scroll down to the numbers and all the info you want will appear.



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Roy in georgia

03-01-2008 16:28:52




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 Re: chevy heads id in reply to caleb in pa, 03-01-2008 14:24:04  
these are 76 cc heads 71-72 year the block is 70-73 year there is a site but I don't know how to link it here but type in (MorTec, Inc. chevy block casting numbers) and it will come up alot of useful info in there your heads should have # 3973493. hope this helps Roy



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