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-   -   rear shackle length firebird (http://www.hotrodders.com/forum/rear-shackle-length-firebird-231676.html)

80ta 04-09-2013 08:26 PM

rear shackle length firebird
 
My firebird has longer than stock rear shackles to counteract the 33 year spring sag. I just put new springs in it and it now will clear 30 inch tires with room to spare, ( looks a little to 70's ).

I plan to shorten them up and was wondering if there is a minimim length. They are 5 inches between bolt centers now. thought I'd try about 2.5 - 3inches. Will this be too close to allow the suspension to work properly?

Thanks for your help

dumbasastump 04-14-2013 07:24 AM

try soaking them in a bucket of steam they might shrink

vinniekq2 04-17-2013 09:03 PM

did you add any springs or just re-arc the old springs?

80ta 04-18-2013 06:02 PM

I had a new set of rancho springs from a 77 camaro parts car.

I ended up measuring a stock 81 camaro and made them that length. Would have liked to go shorter but wasn't sure if it would effect the suspension. They measured 3 3/4 inches. Worked out OK.

Built a set of caltracs at the same time. What a difference, the rear u joint doesn't try to grind its way thru the tunnel now as the power comes on.


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