https://www.pro-motorsports.com/store/product.asp?id=66

Ran accross some old threads about these, but haven't seen much since.

Is anyone using them, (pics), and what does everyone think of them?

Been running them on my 72 for about four years now and they helped the handling greatly over stock. At the time I installed them I also changed to Hotckis springs from the original worn out small block springs. Dont have any pictures for you though. I am getting the parts together now to convert to B body spindles and 12" brakes. After everything is together I will post a before and after comparison.

I have heard that they do work as advertised. Check out the tall balljoints from these guys, I think they accomplish the same thing. http://www.scandc.com/ I have not used either but might be something to look into.

From what I understand tall ball joints would be the better option because unlike the extenders the tall ball joints change the pin height which helps more with suspension geometry. Pretty sure you most likely need the aftermarket upper control arms to prevent ball joint failure in either case.

From what I understand tall ball joints would be the better option because unlike the extenders the tall ball joints change the pin height which helps more with suspension geometry. Pretty sure you most likely need the aftermarket upper control arms to prevent ball joint failure in either case.

I think your talking about ball joint spacers, the extenders actually bolt to the spindle making it about 2" longer.

Extenders had their place 20 years ago, before there any viable options for increasing spindle height. Now there are dozens of options for accomplishing that. I would not even consider them as an option anymore.

Not even consider? I am sure you have very good reasons as usual. We would enjoy being enlightened further :)

It would seem to me that you end up with the same overall spindle length with these extenders as you do with tall ball joints. So the geometry would be fairly similar.

The extenders do not provide any lowering affect as the tall ball joints do. This might be good or bad depending on your requirements.

The extenders would increase unsprung weight by some amount, likely more than the tall ball joints.

The extenders seem cheaper until you factor in the new upper control arm required. So both are about the same overall cost.

Hey Steve, something about bolting a peice to the ball joint than to the spindle that does not make me want to go run laps at 100+.

The spindle extenders may help to correct one of the many ailments affecting the "A" body but I prefer to corrct them all.

The extenders do not provide any lowering affect as the tall ball joints do. This might be good or bad depending on your requirements.

The extenders seem cheaper until you factor in the new upper control arm required. So both are about the same overall cost.

Neither tall upper ball joints nor spindle extenders provide any lowering affect. Tall lower ball joints would lower the car, but I don't know if such a lower ball joint exists.

The spindle extenders don't require the use of new upper control arms. The original stock control arms can be used as long as they are in serviceable shape.

I used them instead of doing the "Gulstrand mod" to my car.

I have Pro Motorsports spindle extenders on my car now, but it isn't on the road after ALL these years b/c I'm lazy and sorry!

Anyway, I also used new MOOG offset upper A-arm shafts to pull my stock upper A-arms in about a 1/4" to take into account the greater offset of the spindle "tilt-triangle" caused by installing them.

They are 1-15/16" taller than stock and they raise the below ground front roll center considerably to definately help it out on the First Gen. Camaro cars!

(Some say too much of a raise??)........

The only negative thing I have read about them, (AND I will eventually know if it is so or not), is that one guy said he experienced extreme inner tire wear??

He also said his car handled like a slot-car if I remember right??

I have held in my hands a stock taller upper ball -joint that fits my car but I forgot where I put the info on it at??

I had a friendly parts-person let me handle about a 1/2 dozen of them new, in the boxes, trying to find it one time years ago..

pdq67

Rich,

There may be other tall ball joint setups out there, but the one I was thinking of is put together by SC&C. It does use a 1" extended ball joint on the bottom. Thus my comment about the lowering affect.

I would figure that if tall ball joints require a new flat style upper control arm, so too would this extender since the upper ball joint pivot is moved by the same amount by both approaches. If you really can raise the upper ball joint pivot by 2", use the stock arm in a now very angled position, and not cause any ball joint bind throughout full suspension travel... well that would reduce the cost of these changes significantly. I suspect that a new flat-style arm is required though.

Dennis,

Apart from more things to come apart with the extenders, I am not sure I really see much difference between the structural aspects of tall ball joints vs. extenders. But perhaps you are also ruling out tall ball joints too in favor of full tilt custom spindles? :)

Dennis,

Apart from more things to come apart with the extenders, I am not sure I really see much difference between the structural aspects of tall ball joints vs. extenders. But perhaps you are also ruling out tall ball joints too in favor of full tilt custom spindles? :)
I'll have pics really soon, parts on the bench at work as we speak. ;)