Do all IROC-z's have the 36MM hollow front sway bar stock? How do I tell if its 36 or 34 without putting a caliper/micrometer on it?

also would these have the HD steering boxes? (16" wheels)

 

No.

The 36 hollow, like the 34 hollow, has a hole on the underside of both sides near the end link. Best bet is to measure.

The IROC has a desirable box.

JamesC

 

I want to purchase 36 mm front sway bar bushings. Having trouble locating bushings made of polyurethane. Anyone have a source? Thanks.

 

I had trouble finding the poly bushings too so a while back I went to the dealer and picked up the stock rubber kind for the 36mm bar. No real problems.

 

http://www.top-downsolutions.com/cha...amaro-or-fireb

JamesC

 

Cool. Thanks James.

 

Rockauto has Moog bushings for $10 that are the correct size. They are blue and are very similar to polyurethane.

 

NAPA carries the 36's as well.

 

36 hollow is stiffer than a 34 solid, yet lighter.

 

TDS

Lon is great to deal with.

Pics of my 36mm sway bar and TDS bushing

 

Pool table optional. lol

You've had those a while. Those bushings were made by GULDSTRAND and modified to be greasable by me. A few years back their supplier decided to stop making them. I now modify ES busings to 36mm and greasable.

Lon

 

Intersected in that 36. Is it hollow? Like the stock style?

 

Would like to see the weight comparing to a 34mm solid bar as well.

 

I believe the difference is 6 or 7 lbs lighter for the 36mm.

 

I can only tell you that the 36mm hollow AND a steering brace weigh less than the 30mm solid that was on my RS originally.

Lon

 

That's quite a bit lighter than stock over the front wheels, and it's slightly stiffer than stock too. Hmm ... Decisions decisions lol.. I plan on cutting my front springs SLIGHTLY to lower the front end, but that will lower the roll center slightly so I wanted to offset that with stiffer bar (and cutting the front springs will increase stiffness slightly there too).

Lon, do you make a hollow rear 25mm bar?

 

I don't make ANY sway bars. The 34mm and 36mm front and 23mm and 24mm rear sway bars I sell are used GM bars that I send out for bead-blasting and powder-coating.

Lon

 

The rears are solid and the fronts are hollow ?

 

Yes.

I have never seen a hollow rear.

 

Not in a factory bar, but I have one designed for my top secret Mumford link setup that incorporated a HRE in-cockpit adjustable hollow rear bar. I posted a few concept drawings of this idea that were false and Strano stole the idea and ran with it doing his reverse watts link. Its why I never put up my actual finished rendition, the correct one, not the false one.

I do plan on someday building this on someones car and then possibly marketing it.

 

Dean start making these parts so we can buy them lol

 

ill tell you what stops me- the lack of fabrication skills based on the limited tools or lack of machinery/ machinery quality I possess/ do not possess.

The part I would be most wrried about is the bell crank pivots. I really do not know enough on how to reliably build a pivot point with such strain upon it. I would not merely want the mumford pviots to act upon a few grade 8 bolts, it would have to have some sot of urethane bushing insert or bearing insert that would take massive lateral load just like the LCA bushings do in longitudinal load and pivot. I guess I could weld levers arms to the outside diameter of DOM tubing cut to the same specs as the urethane cups of aftermarket LCA bushings and use those for the fulcrum points.

I have been thinking how to answer you for about 10 minutes and you have really made me think "why not just ry something experimental on my truck in free time". Even though the truck is leaf spring rears, I could actually for example simply add a panhard right now to it and the panhard would become the dominating lateral location pivot- so why not just simply add a Mumford prototype to it and if it fails the RC failsafes back to the leaf setup- it would make for a good test ground for a prototype symmetry in arm and bell crank sizes and angles. I could learn alot from paper to real world testing like that.