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Old 10-13-2009, 05:40 AM   #1 (permalink)
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Tranny & transfer case Question

I found some information posted on other threads, but I'm still a little foggy.....

I have a 4L60e out of a 96 corvette, I'm looking at getting a NP241c. The tranny has a long tailcone, when removed the spline is about 7 3/8" long. As long as both are 27 spline, is all I need a 4 bolt tranny side to 6 bolt TC side adapter like this one below on ebay ?

http://cgi.ebay.com/ebaymotors/CHEVR...9#ht_598wt_958

I'm assuming i would just remove the exsisting tail cone on the tranny and bolt this adapter up, if this is correct the spline on the tranny would stick out 3 7/8" past the adapter, does this all fit in the transfer case input spline?

Been out of 4wd's a long time....

Thanks,
Rick
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Old 10-13-2009, 06:15 AM   #2 (permalink)
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It's the same 27 spline, but IIRC, the 2wd shafts are like 3 inches longer than the 4wd shafts.
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Old 10-13-2009, 06:55 AM   #3 (permalink)
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So is there an adapter for a 2WD 4L60e to a np241c case?

Rick
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Old 10-13-2009, 07:06 AM   #4 (permalink)
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All I can tell you is that you need to swap the output shaft from the 2wd to the 4wd version and then run the adapter you posted above.

There may be a spacer available that would go between the 2wd case and the trans-tcase adapter, but I don't want to search for it.
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Old 10-13-2009, 08:16 AM   #5 (permalink)
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Thanks,

I couldn't find any spacer, It appears the only way is to do as you say, change the shaft. I can barely spell transmission much less tear one apart.

I might be easier to sell this one and pick up one with the shorter cone. Somewhere I read it's better to keep the tranny that was mated to the engine. I picked up this one that came out of a 96 corvette, under 80k on the odometer for a killer deal.

Rick -
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Old 10-13-2009, 09:19 AM   #6 (permalink)
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It's not that expensive to have a tranny shop pull it apart and replace the output shaft. I had mine converted for $100 and that included the new shaft. I also upgraded the reaction hub shell while I was at it. He did that for the price of the shell since he already had it apart.
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Old 10-13-2009, 12:40 PM   #7 (permalink)
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Thanks,

I hit transmission shop at lunch, 120 for all.

Rick
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