Where on an NOM GM 454 block would the date be stamped ? - Team Camaro Tech
Engine General Engine Discussion.

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old Jan 5th, 08, 07:50 AM Thread Starter
Join Date: Aug 2000
Posts: 50
Where on an NOM GM 454 block would the date be stamped ?

I know that my 454 is not the original block. The car was restored sometime in the late 90ís and a GM 454 block was used. I need to install a new flywheel, bellhousing, oil pan and some other parts and know that if the block was made after 1990 the parts are not same as the earlier 454 block (1970 to 1990)
Any idea where on the block the date or at least the year might be stamped ?
Or, any idea how I would tell if itís a pre 1991 block ? I donít want to order the wrong parts.
Many thanks

Where on an NOM GM 454 block would the date be stamped ?
jaytone is offline  
Sponsored Links
post #2 of 2 (permalink) Old Jan 5th, 08, 08:30 AM
Join Date: Apr 2000
Posts: 21,341
Re: Where on an NOM GM 454 block would the date be stamped ?

A date code for the block casting should be on the bellhousing flange boss. And maybe down along the oil pan rails... Probably by the coolant drain plugs??

I think the change was when they went from a 2-piece crank seal to a 1-piece.

So go from there unless it's Bowtie block?


pdq67 is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome