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Post Info TOPIC: Is that a 427 or 396 block?


Poncho Master!

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Is that a 427 or 396 block?


hi gurus! mate has a BBC. Numbers tell us 396/427,  corvette

Any secret way of telling whether a block is 396 or 427 without taking apart and measuring bore? Thanks!



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Poncho Master!

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Should be able to by casting number and or stamping number.



-- Edited by JC2+2 on Sunday 1st of October 2017 09:57:54 PM

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A Poncho Legend!

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Yes, I don't know of any casting number that is shared by both displacements. It should be unique for each size.

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1966 Strato Chief 2 door sedan 283 "survivor"


Poncho Master!

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Carl Stevenson wrote:

Yes, I don't know of any casting number that is shared by both displacements. It should be unique for each size.


 I didn't think so either but according to my Chevy V8 Casting Number book in 1966 they share number 3855961. I guess if you have that number then you have to use stamping numbers. 



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A Poncho Legend!

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I see what you mean, I looked on mortec.com and it's there too.

It seems odd that you never hear talk of getting one of those in a 396 configuration and boring it out to a 427 if that's the case. And I have no doubt it is, GM sure should know and Mortec is normally bang on with their stuff too.

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1966 Strato Chief 2 door sedan 283 "survivor"


Poncho Master!

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Bit frustrating! How do we tell from stamping numbers?



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cutting a roof off a four door is NOT a convertible.....

65 Parisienne convertible project.



A Poncho Legend!

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This site is great. You can find this code on the front of the block, just in front of the passenger side cylinder head.

www.nastyz28.com/chevy-engine-code-stampings.php

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1966 Strato Chief 2 door sedan 283 "survivor"


Poncho Master!

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Nice, thanks carl, will give it a try!



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cutting a roof off a four door is NOT a convertible.....

65 Parisienne convertible project.



Addicted!

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     I have that # as a 1966-1967  396 2 bolt main 



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Addicted!

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67curves wrote:

     I have that # as a 1966-1967  396 2 bolt main 


          number is 1966 only 427 2 bolt main.   



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Guru

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image.jpeg



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pontiax- (canadian pontiac X frame)1964 Parisienne 2dr. hdtop lagoon aqua metallic (Q)

 



A Poncho Legend!

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Any luck with this Phillip?

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