Enjoy 5% OFF at VEVOR Canada! and Support Canadian Poncho at the Same Time!
Members Login
Username 
 
Password 
    Remember Me  
Canadian Poncho Homepage -> Canadian Poncho -> 65-70 Full Size Power Train Tech Forum -> Is that a 427 or 396 block?
Post Info TOPIC: Is that a 427 or 396 block?
koolconvertible


Poncho Master!

Status: Offline
Posts: 1713
Date:
Is that a 427 or 396 block?
Permalink  

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!



__________________

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

65 Parisienne convertible.one of 49 built for RHD export market,402BBC, T400, 2500 stally, posi rear, upgraded brakes with front discs, FUEL FAST efi custom built by me.
JC2+2


Poncho Master!

Status: Offline
Posts: 1760
Date:
Permalink  

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

__________________

'68 Parisienne 2+2 Convertible Matador Red (Resale Red but not for sale).
Fall into savings UP TO C $50 OFF Shop now
Fall into savings UP TO C $50 OFF Shop now
4SPEED427


A Poncho Legend!

Status: Offline
Posts: 49872
Date:
Permalink  

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

__________________

1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
JC2+2


Poncho Master!

Status: Offline
Posts: 1760
Date:
Permalink  

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. 



__________________

'68 Parisienne 2+2 Convertible Matador Red (Resale Red but not for sale).
4SPEED427


A Poncho Legend!

Status: Offline
Posts: 49872
Date:
Permalink  

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.

__________________

1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
koolconvertible


Poncho Master!

Status: Offline
Posts: 1713
Date:
Permalink  

Bit frustrating! How do we tell from stamping numbers?



__________________

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

65 Parisienne convertible.one of 49 built for RHD export market,402BBC, T400, 2500 stally, posi rear, upgraded brakes with front discs, FUEL FAST efi custom built by me.
4SPEED427


A Poncho Legend!

Status: Offline
Posts: 49872
Date:
Permalink  

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

__________________

1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
Fall into savings UP TO C $50 OFF Shop now
Fall into savings UP TO C $50 OFF Shop now
koolconvertible


Poncho Master!

Status: Offline
Posts: 1713
Date:
Permalink  

Nice, thanks carl, will give it a try!



__________________

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

65 Parisienne convertible.one of 49 built for RHD export market,402BBC, T400, 2500 stally, posi rear, upgraded brakes with front discs, FUEL FAST efi custom built by me.
67curves


Addicted!

Status: Offline
Posts: 257
Date:
Permalink  

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



__________________
67curves


Addicted!

Status: Offline
Posts: 257
Date:
Permalink  

67curves wrote:

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

          number is 1966 only 427 2 bolt main.   



__________________
pontiax


Poncho Master!

Status: Offline
Posts: 1451
Date:
Permalink  

image.jpeg



Attachments
__________________

pontiax- (canadian pontiac X frame)1964 Parisienne 2dr. Hardtop ,lagoon aqua metallic (Q) ,421 cid Dart Industries block and heads. 550 hp. 575 ft lb  of torque.

 
4SPEED427


A Poncho Legend!

Status: Offline
Posts: 49872
Date:
Permalink  

Any luck with this Phillip?

__________________

1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.
Canadian Poncho Homepage -> Canadian Poncho -> 65-70 Full Size Power Train Tech Forum -> Is that a 427 or 396 block?
Tweet this page Post to Digg Post to Del.icio.us
.
Support Canadian Poncho!
Select Amount:
<
.
.
.