-- Message Boards -- 1968 California Special Limited Edition Ford Mustang GT/CS
D I S C U S S I O N . F O R U M
1968 GT/CS & HCS
2007+ GT/CS
1966-1967 HCS


Old 02/03/2007, 06:33 PM   #1
Stacey Enderle
My Car Details

Joined: Jun 06
Posts: 181

Special code on engine head?

I remember when the engine (289) was rebuilt, one of the heads was cracked on it. I vaguely remember that this specific head had an "R" code on it, I'm not certain, but I remember I tried in vain to find another like it and was unable to. So I finally had to find a set of heads from a regular 289 to install instead. It sticks in my head that it was originally supposed to have headers put on it, but never did. Can anyone fill me in on that at all?

Stacey Enderle is offline   Reply With Quote
Old 02/03/2007, 07:24 PM   #2
rvrtrash's Avatar
So many cars, so little time!

Location: Post Falls, Id.
Joined: Apr 03
Posts: 3,505

My Garage
In addition to the regular casting number and date codes, Ford heads have a letter cast into them to show the cc's (cubic centimeters) of volume of the combustion chamber. I would have to check to see if one of my reference books lists the different ones but I know my engine building guy had a book that listed them, and I think it was the Keith Black catalog. It was how we figured out which piston I wanted to use for the compression ratio I was aiming for. You might try a dedicated engine shop in your area and see if they have something similar.


The wannabe formerly known as an owner.
rvrtrash is offline   Reply With Quote
Reply Forums > GT/CS and HCS Forums > GT/CS and HCS Discussions

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
calif. special x code jonny Classified Ads 2 10/27/2006 08:15 PM
Saw this on ebay: "1968 MUSTANG CALIFORNIA SPECIAL VIN TAG ENGINE TAG" 68sunlitgold GT/CS and HCS Discussions 64 02/26/2006 05:22 AM
J Code engine ID gt bandit GT/CS and HCS Discussions 10 01/28/2006 03:56 PM
The 390cid S code Engine davidathans GT/CS and HCS Discussions 15 12/19/2005 11:22 AM
Cali Special w/ 175k on engine? GT/CS and HCS Discussions 5 07/25/2003 03:59 PM

All times are GMT -7. The time now is 01:54 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.

This site created, owned and maintained by Jon Hanna - Copyright 1996-2011
All rights reserved. is not affiliated with Ford Motor Company

ShowCase vBulletin Plugins by Drive Thru Online, Inc.