Lateral-g Forums - 67 Camaro with independent rearend suspension

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- - 67 Camaro with independent rearend suspension (https://www.lateral-g.net/forums/showthread.php?t=36945)

I have been looking into IRS for a while now and one of the coolest (definitely not the cheapest @ $8000) ways to do it is with the Heidts bolt-in IRS.

http://www.heidts.com/_uploaded_file...epower_irs.jpg

There's a hell of a lot less hassle involved and it just looks bitchin'. Watch the video they have on it in a Camaro running an autocross coarse. Here's the link:

https://www.youtube.com/watch?v=ybODyxYpF9g

also the main site link:

http://www.heidts.com/6769_camaro_re...uspension.html

Now if you want to go ALL out, and make your car absolutely badass, put this setup in front:

http://www.classicindustries.com/ima...a/am676901.jpg

For those not in the know, this in an Art Morrison AME GT Sport front clip for a 67-69 Camaro, utilizing modified C6 spindles and stock C6 uppper/lower A-arms. I hope to put BOTH the Heidts IRS and this front clip into my 67 Camaro......some day! :yes:

http://www.artmorrison.com/camaro.php

Quote:

Originally Posted by John510 (Post 416057)

It would be easier to just buy the new Roadster shop IRS chassis. Those are so bad ass!

:thumbsup:
Even though the op already has his donor car, I'll leave the info for others thinking of doing similar.
We offer the IRS setup in two flavours: Full chassis or separately

Our setup is based around specific geometry setup for pro-touring sized vehicles and their appropriate track widths so you don't have to run rear wheels with weird offsets or any external flares, bulges etc. It has been engineered from scratch around the weights, sizes and intended use of our pro-touring/performance vehicles and as such it is not based on an antiquated Jag setup or modified street rod platform. The Fast Track IRS also uses conventionally mounted outboard brakes for easy rotor and pad changes and countless brake package options. It is also built to accommodate high horsepower (+600) with drive axle options to withstand hp well into the 4 digit range.:unibrow:

Here is the IRS as a full chassis for a 1st Gen Camaro:

http://i563.photobucket.com/albums/s...f/Untitled.jpg

And a vid on the setup:

Quote:

Originally Posted by Darth Praxis (Post 418631)

Not to take anything away from Heidt's, but that IRS is in no way even comparable to the one RS makes. And they are similar in price. Just my opinion. I'm sure with the forged axles, big 934 CV joint's and thick control arms that the RS IRS trumps that old inboard brake style IRS that Heidt's makes. Furthermore, the Heidt's IRS is suited more for hot rod style cars. The RS IRS is custom CNC'd and the railing on it is just more slick to me.

Quote:

Originally Posted by ratman67 (Post 418724)

what does that full frame irs setup set one back??? nice looking piece btw

Thanks!
All our pricing and options can be found HERE for the full frames.

Quote:

Originally Posted by RS-Chris (Post 418728)

Thanks!
All our pricing and options can be found HERE for the full frames.

Wow! Your products make me want to throw my car out and start over :bow:

Quote:

Originally Posted by Darth Praxis (Post 418638)

If you put that sub in as shown it will not be badass. It has a 13/16 swaybar as shown. Watch early videos of Jackass and you can see it leaning thru turns. Make sure when you upgrade to their larger splined and that they have solved the steering rack location issue that had the swaybar end link hitting the threaded part of the rack end links. Fixable stuff but something you want to address ahead of time.

Quote:

Originally Posted by clill (Post 418859)

Charley, do you have any other criticism of the ame sub frame? Anything else that can be done to fix the issues? Are yOu happy with the overall performance after the fixes?

Quote:

Originally Posted by legend (Post 416301)

the fixed length half shaft IRS versions appear to be based on the old Jaguar XJ6 type rear ends that were quite poor in terms of geometry. A live rear axle is "theoretically" very poor, but many people get them to work well.

I'm driving an old E38 bmw at the moment and the rear suspension of those is a slightly better compromise in terms of geometry than the Jaguar derived units is and it all comes on a cradle. I've no idea about the GTo stuff as we don't get them in the UK.

http://www.jcna.com/library/tech/images/tech0009b.jpg

JAG IRS, design is older than the 1st gen camaro stuff, but the v12 diff is very strong

"The Jaguar IRS is really a fine design, but has a flaw called "dreaded roll oversteer", caused by the action of the two trailing arms when the rear suspension compresses. As you are aware, the cage is mounted to the "frame" using molded rubber mounts, to allow the whole unit to move. It really moves about + or - 3/4 " if you snap out the clutch ! If you really watch this happen, you'll flip out! In a hard turn, the wheel on the side of the car whose suspension's being compressed, is forced rearward by the effective lengthening of that side's trailing arm, while the reverse is happening on the opposite side, pulling that wheel forward ! This, in effect, is rear wheel steering, without asking for it. "

Yes and no....

The Jag unit that came with trailing arms is the one that seems to move around a bit, though there seems to be some debate as to whether or not it was "designed" to do so. Ditching the soft rubber mounts on the cage, and using a trailing arm that pivots in line with the dog bones makes for a very nice set up.

Quote:

Originally Posted by badmatt (Post 417634)

Wasn't there a guy on here using a 04-06 GTO rear subframe?

Yeah, but he hasn't posted any updates in a while.

The GTO is a semi-trailing arm design. Not a bad unit at all. I have been considering the GTO and Jag units, but I think the Jag s probably the better design. Jag has used a variation of it right up into the new millennium, so it can't be all bad!

Shiny Side Up!
Bill