CaliforniaSpecial.com -- 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
COMMUNITY
1968 GT/CS & HCS
2007+ GT/CS
1966-1967 HCS

Vote!

Old 09/01/2014, 11:42 AM   #1
p51
My Car Details
 
p51's Avatar
 
Carpe Diem

Location: NorCal
Joined: Aug 05
Posts: 924

Front End Alignment

Just FYI:

My steering was slightly "twitchy" at highway speeds. It almost seemed as if I had too much slop somewhere in the steering linkage (maybe a worn part, etc). But I checked that and it seemed that everything was as tight as it could be (for 1968 power steering technology). So I thought I'd check the alignment. The alignment was within the original Ford spec...

Original Ford spec:
Caster angle degrees
Limits: -3/4 to +1 1/4
desired: +1/4
Camber angle degrees, Left and Right
Limits:+1/4 to +1 3/4
Desired +1
Toe in , inch 3/16

But after doing a bit of research on the web I came across some different specs (from Dazecars.com) which have been mentioned/suggested on different mustang forums as better specs for use with radial tires:

Spec from Dazecars:
Please align to these specs ď1967-1970 Mustang, Falcon & Cougar Performance Alignment with or without UCA dropĒ.
These specifications are in order of importance.
1. NO more than .25 degrees difference between driverís side and passengerís side.
2. +2.0 to +3.5 degrees caster.
3. -.5 to 0 degrees camber. No positive camber, please. There is no problem having a slight variation from driverís side to passengerís side to account for the crown in the road.
4. 1/16" to 1/8Ē toe in

So, I did an alignment to these specs. Specifically:
Caster: +3.5*
Camber: -0.25*
ToeIn: 1/8"

The steering is much better. The feeling of excess play is gone. It comes pretty close to feeling like a modern car. One note, evidently as you increase the caster angle on a manual steering car, turning the steering wheel at slow speeds becomes more difficult. But with power steering there is very little difference.

Just thought I pass this on....

The world stands aside to let anyone pass who knows where he is going.
p51 is offline   Reply With Quote
Old 09/01/2014, 02:12 PM   #2
dalorzo_f
My Car Details
 

Location: Brisbane Australia
Joined: Jan 06
Posts: 1,886

My Garage
The original specs were done with bias ply tires in mind. Altering the settings for radials is a common tweak that results in improvements as you note...

In general, more caster applies more centering force to keep the wheels tracking true... negative camber also helps maintain true tracking (dependent on suspension and chassis alignment, but that gets pretty complicated to really determine) and reduces body roll.

An interesting write up on the three aspects of an alignment here:

http://www.ozebiz.com.au/racetech/theory/align.html
dalorzo_f is offline   Reply With Quote
Old 09/02/2014, 11:32 AM   #3
p51
My Car Details
 
p51's Avatar
 
Carpe Diem

Location: NorCal
Joined: Aug 05
Posts: 924

Quote:
Originally Posted by dalorzo_f View Post

An interesting write up on the three aspects of an alignment here:

http://www.ozebiz.com.au/racetech/theory/align.html
Looks like a good writeup. Thanks.

The world stands aside to let anyone pass who knows where he is going.
p51 is offline   Reply With Quote
Reply

  CaliforniaSpecial.com 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
1968 - Front end sit higher than back end of GTCS Wild Willie GT/CS and HCS Discussions 13 08/18/2011 01:19 PM
1968 - front end alignment logue636@comcast.net GT/CS and HCS Discussions 5 10/20/2010 10:36 AM
1968 - Does anyone have any suggestions for front end alignment specs for a big block? GT/CS S Code GT/CS and HCS Discussions 4 07/26/2010 07:43 AM
1968 - Rebuild Front End 68P51 GT/CS and HCS Discussions 5 09/07/2009 01:35 PM
question about lifting front end dragonkff GT/CS and HCS Discussions 5 05/22/2008 09:37 PM


All times are GMT -7. The time now is 12:02 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2017, vBulletin Solutions Inc.


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

ShowCase vBulletin Plugins by Drive Thru Online, Inc.