My 2014 American 242" swingarm chassis has a 350 lb rate spring. Running 1150ish HP aluminum block BBC combination. Car has a race weight of 1875lbs. Everything seem to be working OK, when doing a visual comparison to similar combinations my spring is compressed much more than others. Curious what others are running and what the advantages may be. Educate me...
Posts: 102 | Location: Ga | Registered: July 28, 2007
IF you call Shelly at American racecars she can get you the answers. I have text and called her and she gets back to me within a day.This message has been edited. Last edited by: S/C718,
Posts: 109 | Location: Albuquerque | Registered: September 15, 2008
I spent 15 minutes on the phone with Shane from Competitive Suspension. Shane answered all of my questions and has earned my business. The guy knows his stuff and tells you straight up if he can provide the required results using your existing components. Better yet, the man answered his phone when it rang.
Posts: 102 | Location: Ga | Registered: July 28, 2007
Your spring rate is more because of the angle of the shock. My 08 American had a 400 lb spring on it. Ran 4.40’s at 156. All alum 632 Good luck
Brian Mollison 2013 American Dragster 2020 Sumerduck Dragway VA Top ET Champion 2017 Sumerduck Top ET & SSS Track Champion 2017 MAC Top ET Track Champion 2009 Sumerduck Dragway Va Top ET & IHRA SSS Track Champion 2008 IHRA Division 1 Top ET Bracket Final Runner-up 2007 Colonial Beach Dragway Top ET Track Champion
Posts: 1033 | Location: Stafford, Virginia | Registered: October 03, 2006
Originally posted by 00 DEAD ON: Your spring rate is more because of the angle of the shock. My 08 American had a 400 lb spring on it. Ran 4.40’s at 156. All alum 632 Good luck
Brian
That's only one piece to the puzzle so to speak! There's more to this deal. The easiest way to compare one car to another is to actually measure the shock vs rear end movement! This is what tells you the entire story. Racers can have the wrong spring in the car and not know it. If your having a shock built or modified you should measure this first and give that info to the shock company. As ratios move away from one to one and the shock begins to move less than the rear end does the more dampening you need/stiffer shock, along with a stiffer spring.