Mustang II findings and questions - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 11-12-2005, 06:41 PM
Registered User
Join Date: Nov 2005
Location: usa
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Mustang II findings and questions

I'm building a 65 Mustang street car with a 750hp 521 and a Mustang II front end that consists of a Rod and Custom Motorsports crossmember, my own chrome-moly upper control arms, and soon to be built or purchased and modified lowers.

One thing I noticed when digging into the task of buying or designing lower control arms is that you can't just use any tubular lower control arm on any crossmember. The Heidt's lowers are designed for their crossmember (I *heard* it was 3.375" wide from front to back). The RCM crossmember is 4". If you use a Heidt"s lower on it, it will move the balljoint forward .313" with respect to the crossmember centerline. If you use a crossmember that is less than the Heidt's crossmember width you can use the Heidt's lowers provided that you space the control arm properly to put the ball joint on the crossmember centerline.

So, the fix is to chop off the bushing sleeves and use rod ends which are thinner than the rubber bushings. This should provide just enough extra room to put the control arm where it needs to be. I have a feeling few people consider the ball joint location when purchasing a tubular lower. Note that this only pertains to those purchasing tubular lowers that eliminate the strut rod.

This also scares me because the RCM website is selling lowers that look just like Heidt's, so I am assuming that they are Heidt's. I could be wrong, though.

So here's my question. Does anyone know the diameter and wall thickness of the tubing that Heidt's uses on their lowers? If I can't thread it for a 5/8-18 rod end I'm screwed and must build my own set!

Also, I wasn't too impressed with the person who told me that the Heidt's crossmember was 3.375" wide. Does anyone have one around that they can measure so the info can be posted here?


Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 11-14-2005, 11:09 PM
Deuce's Avatar
Registered User
Last wiki edit: Choosing a trailer
Last journal entry: Jan 13 2013
Last photo:
Join Date: Aug 2002
Location: Deuceland USA
Age: 69
Posts: 5,657
Wiki Edits: 6

Thanks: 0
Thanked 11 Times in 10 Posts
I suggest you read the Mustang II failure thread.......and the results of eliminating the strut rod......for educational purposes...
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last 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 for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

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

All times are GMT -6. The time now is 01:28 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.