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I know the bar in the picture links the left and rear training links, but they have rod ends, and the uppers aren't "splayed" at a 40-45* angle like an old style GM B-body design. To me, this wouls allow the rear axle to wander all over, with the "spreader bar" tying both sides together. Maybe I'm wrong....
the suspension geometry/dynamics of a live-axle compared to an IRS just plane suck unless you actually want a high rear roll center and zero camber gain.
You can set the roll center to your desired height using a watt's link. With a mumford link, you can even set the roll center below ground. Camber gain, I'll grant you. (Sorry for the rust... prior to powder coating)
You can set the roll center to your desired height using a watt's link. With a mumford link, you can even set the roll center below ground. Camber gain, I'll grant you. (Sorry for the rust... prior to powder coating)
Very interesting set up there haven't seen on like that before, and thanx for the pic and info.
Are you sure this is the direction you want to take? Back in the early 70s, when I used to go to the drags with my friends, there was a Chevy dealer from Niagara Falls, NY, that ran a big block powered C-3 in one of the Super Stock classes. That car ran a good sized slick, within the class's rules, and on EVERY run it left the line with the LF tire 4-6" off the ground.....with the IRS in place.
In the 70's the rear was iron, 81 is if i am not mistaken, cast aluminum for weight, this car was only 180hp then add in epa restriction ect, not made for any thing other than a nice ride in the country,lol
the 80-82 rear is a weak link if making big torque. a 1979 and older rear can handle alot more power safely,how is would it be to convert to a iron rear? would a newer c4 rear be better and work in a 80-82 vette?
I am doing this conversion as we speak i am just waiting on my axles to be built to finish mine. You need to check out Bluzman, and corvette daves threads about this there is alot of good info about it there. How your gonna use your car, and what value you place on your car will be the deciding factor. I do all of my own fabricating and welding and I think it is very simple and straight foward. My car is strictly a drag car. but those others use theirs on the street. and they do come with a diagnal bar. Im sure an IRS can be built to withstand anything, but for cost and to stay legal with NHRA rules the 9" was definately my best choice. You do have to notch the crossmember but again It was simple and I didnt value my car as anything special. Do your research well before you make a final decision. GOOD LUCK!!
From: Graceland in a Not Correctly Restored Stingray
Originally Posted by garygnu
the 80-82 rear is a weak link if making big torque. a 1979 and older rear can handle alot more power safely,how is would it be to convert to a iron rear? would a newer c4 rear be better and work in a 80-82 vette?
As already pointed out, the '79 and earlier iron 10-bolt IRS hoghead will pretty much bolt right up to the C3 batwing...
Last edited by TheSkunkWorks; Dec 16, 2012 at 09:23 PM.