IRS kits, C4 'vette, Heidts, or Kugel???? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 01-05-2008, 01:32 AM
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IRS kits, C4 'vette, Heidts, or Kugel????

Hi everyone, I am in the early stages of planning a 35 ford sedan. I am thinking I will use a 300Hp LT1 and C4 corvette IFS. The big question is the rear end. It has to be IRS, but I am wondering what the folks here think of the Dana 36/44 vs. the Heidts or Kugel ford 9” based IRS kits.

The ‘vette would be cheaper, and 300 Hp “shouldn’t” be a problem, but I am worried that it will have to be narrowed, and have no idea what that does to the suspension geometry.

Any help / tips / thoughts would be greatly appreciated!

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Old 01-05-2008, 08:37 AM
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If you have the bucks, and you obviously do if your considering Kugel, go with the C5 drive train. That IRS can handle 300+ HP with no problem, plus it rides and handles much better.

Vince
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Old 01-05-2008, 09:57 AM
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If you want to look at a couple more Ford 9" IRS setups, check these out.

http://www.dutchmanms.com/1_irsnav.html

http://www.cwiinc.com/9inchsuspension.htm

They both offer various widths.

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Old 01-08-2008, 08:09 PM
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If you are looking for a kit/set up, you may want to consider Progressive's Corvette IRS C4 approach. If you need to put a new frame under your 35, this may be worth considering.

http://www.progressiveautomotive.com/40F.htm
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