View Single Post
  #71 (permalink)  
Old 07-13-2019, 05:01 PM
Armrer Armrer is offline
CC Member
Visit my Photo Gallery

 
Join Date: May 2013
Cobra Make, Engine: SPF 289 Street
Posts: 209
Not Ranked     
Default

The OE tracks are made from period British Butter. If the lower track fasteners get loose, or were never tightened properly, movement will work harden.. then crack them. I suspect that’s 100% of the problem. If they are bolted down properly, nice and tight, no cracking.
It historically has been a PITA to properly tighten the lower tracks on both 289 & 427 cars. Many original owners half assed it. I have seen that in person.
Reply With Quote