Suspension Notice for S/SS by NHRA

[SSDiv6]

Originally Posted by Tom Goldman

I read this as only pertaining to replacing strut rod donut bushings with heims.
I've worked on and aligned many AMC's Fords,Mopars And GM's with heims replacing the bushing and see no benefit other than safety .[ OK mabe a little header clearance ]
Mabe NHRA should ask Bob Bender how his car handled at the top end when it split a rubber strut bushing out after the launch. ,yes that tank has a strut rod front suspension.
Alowing you to use a heim to replace a tie rod end ,but not allowing their use on a strut rod is foolish , at least in Super Stock.
This really needs to be addressed by the S/SS racer reps as soon as possible.

Tom,
The clarification as written is too broad; it does not specifically say strut rods:

"The NHRA Technical department wants to remind Stock and Super Stock Eliminator competitors the use of spherical bearings / heim joints is prohibited.

The 2013 NHRA Rulebook, section 10A page 7 and section 11A page 5 SUSPENSION FRONT reads in-part “Must retain complete stock front suspension system as produced be manufacturer for body used."

The use of spherical bearings or heim joints to replace the bushing in any vehicle is in violation of the NHRA Rulebook. Competitors with spherical bearings or heim joints must bring their vehicle into full compliance with NHRA rules and regulations; prior to their next event."

The way I read the statement is that spherical bearing and/or heim joints are prohibited and not to be used in any suspension component and must reamin stock or as produced.