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Old 03-25-2009, 11:47 AM   #16
rtj
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Default Re: Solid Axle Corvette

This guy runs a Tom's 12 bolt conversion IRS and their HD halfshafts and axles. Only down side is the cost.

I've heard rumours that Tom is only selling the conversion parts now, but a guy on the internet GRT1999 is building them with Tom's parts.



Tom's in-house car runs 8's with one of these according to his website.
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Old 03-25-2009, 11:52 AM   #17
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Default Re: Solid Axle Corvette

I've seen a guy post photos of him installing this kit, it looked nice.

http://autofabcart.net/1968-1982corv...4-linkkit.aspx
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Old 03-25-2009, 11:56 AM   #18
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Default Re: Solid Axle Corvette

http://www.hotrod.com/techarticles/1..._pictures.html


http://www.hotrod.com/techarticles/1...dup/index.html

It's too bad someone like Alston or Strange wouldn't make a fabricated IRS housing with a 9" center for C2 and C3 vettes.
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Old 03-25-2009, 12:01 PM   #19
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Default Re: Solid Axle Corvette

There was a company making Dana 60 IRS systems for the C2 and C3 using a hemi rear end housing. They still come up for sale now and then. I think this was one.

http://www.vetteweb.com/features/vem...tte/index.html
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Old 03-25-2009, 12:12 PM   #20
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Default Re: Solid Axle Corvette

I have spoken with GRT1999 and this is way too expensive IMO. I could buy a third gen and have it ready to go for the price of the rear alone. I am going to do a 8.8, suspend it with the transverse spring and see who complains about it not being "stock susp.".
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Old 03-25-2009, 05:38 PM   #21
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Default Re: Solid Axle Corvette

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Originally Posted by 2manytoys View Post
I have spoken with GRT1999 and this is way too expensive IMO. I could buy a third gen and have it ready to go for the price of the rear alone. I am going to do a 8.8, suspend it with the transverse spring and see who complains about it not being "stock susp.".
It's not cheap, but some guys want the IRS.

That's why I bought a retired GenII race car.

I posted mainly as info. Tom's still probably has prices on his web site.
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Old 03-25-2009, 05:40 PM   #22
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Default Re: Solid Axle Corvette

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Originally Posted by 2manytoys View Post
I have spoken with GRT1999 and this is way too expensive IMO. I could buy a third gen and have it ready to go for the price of the rear alone. I am going to do a 8.8, suspend it with the transverse spring and see who complains about it not being "stock susp.".

One other comment. Greenwood used to "cheat" the rules on stock suspension by installing coil-overs and leaving a one leaf transverse spring so it was "stock." Check out his website there's lots of old vette race info. I think it is greenwoodscorvettes.com.
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Old 03-26-2009, 06:53 AM   #23
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Default Re: Solid Axle Corvette

I found some photos of aDana 60 unit that sold a while back and copied the links.

http://i295.photobucket.com/albums/m...60_front_1.jpg

http://i295.photobucket.com/albums/m...ra_parts_2.jpg

http://i295.photobucket.com/albums/m...a60_rear_1.jpg

http://i295.photobucket.com/albums/m...a60_side_2.jpg
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Old 03-26-2009, 04:21 PM   #24
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Default Re: Solid Axle Corvette

I allways considered the IRS in corvetts to be the weak point both strenght and financialy when building a Corvette if you can get past the price of the car to build. I think a 12 bolt swap similar to the one posted previously is the way to go. Compared to the cost of making the independent stuff grenade proof, you can build it with relatively cheap and common parts and make your ride alot more bullet proof for possibly less. Think of it this way, you have alot less points of potential failure with a solid axle swap. I wonder if these solid axle cars launch level or if you need to use a anti sway bar similar to a A/G body set up to avoide tilting on launch. I sure would like to build one of these some day. I will add it to my to do list.
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Old 03-26-2009, 05:47 PM   #25
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Default Re: Solid Axle Corvette

Quote:
Originally Posted by rtj View Post
This guy runs a Tom's 12 bolt conversion IRS and their HD halfshafts and axles. Only down side is the cost.

I've heard rumours that Tom is only selling the conversion parts now, but a guy on the internet GRT1999 is building them with Tom's parts.



Tom's in-house car runs 8's with one of these according to his website.
This is Johnny Rhodes. He does his own conversions. His son Chad should be posting here anytime.
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Old 03-26-2009, 06:07 PM   #26
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Default Re: Solid Axle Corvette

Quote:
Originally Posted by rtj View Post
This guy runs a Tom's 12 bolt conversion IRS and their HD halfshafts and axles. Only down side is the cost.

I've heard rumours that Tom is only selling the conversion parts now, but a guy on the internet GRT1999 is building them with Tom's parts.



Tom's in-house car runs 8's with one of these according to his website.
Wow, kind of an honor to have someone else post pics of our car on yellowbullet. Yes we do run the Tom's setup, it is very relaible. We have had one ring gear failure in 8 seasons, with hundreds of passes. There are a few things about the geometry and physics of the C3 rear end that are key to making them survive. The tom's stuff works, and yes he is just selling parts now. The problem with doing a straight axle conversion is that it has to be done RIGHT. if you use the stock style swingarms, your pinion angle changes in direct relation to the arc, same as a laddar bar but shorter. A 4 link would be better, but its still a shorter arm setup. I would have no issues with the tom's stuff down to 5.70's or even a little faster. If you have any questions feel free to ask.

By the way if you wanted to do a stocker style straight axle, the only man to talk to is Jimmy Parker (dan Parker's father).



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Old 03-26-2009, 06:08 PM   #27
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Default Re: Solid Axle Corvette

Quote:
Originally Posted by Chris Avaritt View Post
This is Johnny Rhodes. He does his own conversions. His son Chad should be posting here anytime.
All the rotating parts are Tom's, we engineered our own spring, and geometry tricks.
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Old 03-26-2009, 07:19 PM   #28
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Default Re: Solid Axle Corvette

A couple more photos of it....





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Old 03-27-2009, 09:29 AM   #29
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Default Re: Solid Axle Corvette

Here is a video of the 12 bolt converted car launching. http://s20.photobucket.com/albums/b2...leProAm041.flv

It is not a very fast car but it does leave straight. I need to get out and see if I can talk to him about his setup. A short 4-link like the autofab kit is what I plan to duplicate.
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Old 03-27-2009, 09:34 AM   #30
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Originally Posted by chad_rhodes View Post
All the rotating parts are Tom's, we engineered our own spring, and geometry tricks.
What size tire are you guys running?
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