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Author Topic: Mixing poly and rubber control arm bushings?  (Read 417 times)

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Offline russosborne

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Mixing poly and rubber control arm bushings?
« on: October 05, 2018, 03:15:11 AM »
Sorry, got lots of questions/thoughts lately. ::)

I am putting Speedway tubular control arms (upper and lower) on the 79. The uppers use a non stock bushing and Speedway doesn't offer a poly version, only rubber.  :( >:(
However, it appears that the lower control arm uses the stock Pinto/MII bushing, and there is a poly bushing for that from Energy Suspension. At least Speedway's dimensions and Rock Auto's dimensions are the same.

I really, really, want poly. However, I am not sure if mixing rubber uppers and poly lowers is a good or bad thing. I wouldn't think it would hurt anything, but I am not an expert on this stuff. I don't mind paying for a whole poly kit just to get the lowers if I have to. Maybe someone can use the uppers.

Thanks,
Russ
In Glendale, Arizona

RIP Casey, Mallory, Abby, and Sadie. We miss you.

79 Pinto ESS fully caged fun car. In progress. 8inch 4.10 gears. 351C and a T5 waiting to go in.