4R100 gearset in a C6?

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4R100 gearset in a C6?

Post  83Capri on May 13th 2017, 11:53 pm

I've heard of this being done, does anyone have any experience with it or know what is specifically involved. from what I understand a bit of lathe work and it fits along with all the torrington bearings instead of bushings. result is 10% lower first and 5% lower second gears.
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Re: 4R100 gearset in a C6?

Post  Uglytruck on June 1st 2017, 10:53 am

It's a very straight forward swap. If you place the sun shells from a c6 and a 4R100 next to each other on the bench you'll see the difference in height. Simply trim the 4R100 shell until it matches the C6. Then everything pretty much drops right in. If you use the 4R100 rear planet you'll need the appropriate thrust washers to match it.

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Re: 4R100 gearset in a C6?

Post  83Capri on June 4th 2017, 9:45 pm

nice, just got my car going so this may be the winter project, I aquired a 4r100 from a powerstroke with a bad 2nd gear clutch. need to inspect it for other damage but the plan is to put the gearset and torringtons in my c6
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Re: 4R100 gearset in a C6?

Post  BigRigTech on June 8th 2017, 11:03 pm

I was thinking about this too when my C6 was built but I'm already having traction issues at the hit on the 275's so we left it alone. I did put Torrington bearings in my trusty old C6 to replace the bushings, works like a top. Very Happy
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Re: 4R100 gearset in a C6?

Post  gt350hr on December 28th 2017, 12:55 pm

I used a standard width kevlar lined flex band and did not have to cut the sunshell. Newer ones are hardened and a bear to cut on a lathe compared to the older non heat treated ones.

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