69 RR Drag Car

[Papa Tom]

Right now I am having an issue with the right rear tire moving forward to rub the forward part of the lower fender. it only does it in reverse. I just put 29.5 in. radial slicks on it and now I have this problem and I didn't have the problem with 28 in. tires on it. It seems the the axle is moving on the right side but not the driver side. Any ideas for a guy that has taken everything apart and put it back together and found nothing wrong. All bushings are like new.

 

[daytona kid]

Did you check the fwrd leaf spring bushing/s, bolts, etc.?

 

[dvw]

How close is it to start with? Leaf spring? If so they will flex a little. If everything is tight shim the front spring hanger back a 1/4".
Doug

 

[hangn0ut]

I would look at the leaf spring. Closely. I think its broken.

 

[Moparallen]

Slop in the spring center bolt hole in the mounting pad will cause that along with elongated through holes for the spring center bolt.

 

[Cranky]

If everything else checks out good, install a solid or poly bushing in the forward spring eye. You should get rid of all the rubber bushings in a drag car anyways....

 

[Budnicks]

I've ran a bigger tire

sometime just a different style of rear springs/front brackets,
like ones made for either 20" or 22" front segments super/stock springs
longer etc., it'll move the springs back
&/or sliders on the rear of the springs or different style shakels,
will help you to ultimately center the wheels & tires better
makes for a better working car at times too,
bigger tires, better footprint, better/more rollout etc. etc. etc.

need to think outside to proverbial box

or get a set intended for 20" S/S front segments, they will be longer
than re-drill them for a custom application, if they won't work out of the box,
as supplied etc., make sure to check &/or shim for the proper pinion angels too...

you will have to check you drive length afterword too &
change accordingly, to fit your specific needs..

Mancini Racing sells both styles & shackles or sliders



There's always more than one way to skin a cat/RR in this case
do some research/due diligence etc., call talk to them even...

good luck