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Old 01-30-2006, 06:02 PM
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Help Identifying a IRS

Hello I am a new member...hate to start by asking but here it goes...

I am trying to find a good deal on a IRS for molding into my s-10. Its pusing around 480-500HP currently and plan to move up to NOS or supercharger soon, however I am still on my s-10's 10-Bolt rearend...(really babying it for now)..I would like to mold a corvette IRS into it for coolness...I found a IRS on ebay but I am having trouble identifying it. I was told the casting number is 8899143 located by the snout. Also stamped on the bottom of the pumpkin was AWX 099 F1. I have searched sites but cant find any info what this would be. I was hoping that this came out of a 68-79 big block vette with posi...Its complete and right now is a good buy (I think). Can anyone help?
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Old 01-30-2006, 06:13 PM
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Don't waste your time and money. Even a "good" used IRS will need to be rebuilt to stand up to that kind of power and it will cost you twice as much as a nine inch conversion not to mention the work involved in mounting the rearend and suspension. Order a built nine inch from Moser or Currie. Slap it in and go. Don't worry about the coolness facter, it's not all it's cracked up to be when marginal parts break and leave you stranded by the side of the road.
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Old 01-30-2006, 06:23 PM
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Even a Ford 8.8 would be less trouble with more ease of mind on reliability, plus is't almost a direct bolt-it if you get one from an Explorer, all the later model ones have disc brakes from what I've been told and seen.
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Old 01-30-2006, 06:29 PM
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cost of installing isnt an issue...my friend has the shop and tools...(welder, plasma cutter, etc) but anyway..I was understanding that the early 80 and 90 models used a Dana36 and Dana44(for standard trans)....Do you think they wouldn't hold up to the abuse? I looked into the exployer option before and know that it is about one inch longer on each side...I guess it wouldnt matter just have to adjuct in backspacing on the wheels to tuck under. So is there a way to identify production year based on serial #?
Thanks for suggestions,
John
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