Replacing upper and lower control arms

V

vbarrios

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May 14, 2007

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9

• May 16, 2007

• #1

I'm looking at updating the suspension on my '67 with a grab-a-trak spring and handling kit. While I'm at it, should I replace the original upper and lower control arms as well?

 

CougarCJ

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Jul 17, 2006

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• May 16, 2007

• #2

I would plan on replacing it all if it is still OEM original 1967 parts.

If you don't already have front disc brakes, this is the time to do that conversion too.

 

rvrtrash

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Apr 25, 2003

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3,650

• May 16, 2007

• #3

I put all new stock type bushings in mine but if I was building a road racer, I'd go with the polyurethane bushings in the upper and lower control arms and a roller spring perch. Check the arms for cracks while you're at it.

Steve

 

BroadwayBlue

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Apr 26, 2005

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Hudson Valley Area, NY

• May 16, 2007

• #4

I replaced my rear springs with the grab-a-tracks and have been happy with them.

 

OP

OP

V

vbarrios

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9

• May 16, 2007

• #5

Thanks for the suggestions.
Steve, you mentioned polyurethane bushings. What's the difference between these and stock ones?

 

rvrtrash

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• May 17, 2007

• #6

They are a hard material that flexes less (if at all), giving you a firmer ride with more accurate tracking. The down side is, you pick up more road vibration. It all depends on what you're going to do with the car.

Steve

 

Mustanger

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• May 17, 2007

• #7

I agree with Steve, when I re-did my '70 Mach 1 with Energy Suspension poly-urethane bushings, it really helped tighten up the chassis ...

 

CougarCJ

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• May 17, 2007

• #8

I know several instances where polyeurethane has caused too much stress on strut rods. The rods have cracked and broken.

I do not recommend using the polyeurethane for the strut rods.

One other down side to poly is a tendency to squeek. I did use poly on my front suspension rebuild, no issues and I did use a liberal amount of lubrication during installation. I should mention that I only have about 2000 miles since the front suspension rebuild.