![]() |
![]() |
#1 |
Registered User
Join Date: Nov 2012
Location: Oleron island france
Posts: 26
|
Lost with my bbc id !
Merry christmas ! I 'm lost with my engine Id
-The block casting is 3963512 , it's mean a '69 427 or a '70 454 -On the front pad TI1I7CGV , CGV means '70 454 right ? - But near the block casting # i can see a big GM 8 : Does it mean 1968 ? How to see the difference between a 427 and a 454 ? Can't remember my heads casting but I think they come from a 396 ci What do you think ? thanks |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Oct 2009
Location: Tampa Bay
Posts: 1,549
|
Re: Lost with my bbc id !
French, Your casting number 3963512 decodes as 427/454, 69-71, 335-450HP
Your engine stamp suffix code CGV decodes as 1970 454, 345hp, 400trans, LS-4, 4bbl, impala
__________________
CHEVY/GMC VIN DECODERS |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,615
|
Re: Lost with my bbc id !
Put this in your favourites folder on your computer. It will come in handy.
http://www.nastyz28.com/decode.php |
![]() |
![]() |
![]() |
#4 |
My Carbon Footprint
Join Date: Oct 2008
Location: Orygun
Posts: 5,527
|
Re: Lost with my bbc id !
When your block hasn't been decked and you still have the PAD numbers, they are all that matters. It's kind of like a 14x7 rally wheel. Came on a bunch of cars but it's the 2 digit letter code by the valve stem that will tell you EXACTLY what it cam on. 427 and 454s share the same bore. It's just the crank stroke that makes the difference. Therefore GM used certain blocks for many different cars/trucks.
|
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Nov 2012
Location: Oleron island france
Posts: 26
|
Re: Lost with my bbc id !
Ok , but do you have an Idea about the big GM-8 stamped near the casting #
|
![]() |
![]() |
![]() |
#6 |
Proprietor of Dale's Corner
![]() Join Date: Nov 2012
Location: Vacaville , CA
Posts: 16,103
|
Re: Lost with my bbc id !
Also 427 is internal balanced 454 external balance, 454 flywheel/flexplate and Harmonic balancer have counterbalance weights 427 doesn't
__________________
"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Oct 2009
Location: Tampa Bay
Posts: 1,549
|
Re: Lost with my bbc id !
French, I'm not 100% sure but I think that is a mold number. It could also be used for quality control by measuring the height of it.
I am sure that it doesn't tell anything about the size or application of the engine.
__________________
CHEVY/GMC VIN DECODERS Last edited by bruceman1968; 12-26-2012 at 12:22 PM. |
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Nov 2012
Location: Oleron island france
Posts: 26
|
Re: Lost with my bbc id !
Thanks a lot !
|
![]() |
![]() |
![]() |
#9 |
My Carbon Footprint
Join Date: Oct 2008
Location: Orygun
Posts: 5,527
|
Re: Lost with my bbc id !
I'm sure it has some very general meaning but really means nothing since you have the other 2. Might be a GM plant ID.
|
![]() |
![]() |
![]() |
Bookmarks |
|
|