Re: Completed auto to NV4500 swap - 86 C20 Suburban
You keep the factory GM bearing retainer, just remove the internal hydraulic slave cylinder from the front. Once it's out of the way, you'll see two smaller threaded bolt holes in the face of the bearing retainer. Advance Adapter's throwout bearing adapter fits over the front of the bearing retainer and uses these two bolts to attach. You can see a good picture of the setup on page 3 of this pdf: http://www.advanceadapters.com/downloads/712576.pdf
Page 2 also has a schematic drawing of the throwout bearing adapter itself. Apparently you also have to order the special Centerforce throwout bearing they recommend for this as well. Not sure why, but I went ahead and ordered it as I didn't have time to fool around with other stuff.
-cal30sniper
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86 Chevrolet K20/30 Suburban - 8.1/NV4500/NP205/Dana 60/14 bolt FF, build in progress
73 Formula - 400/Doug Nash 4+1, resto on hold
86 Chevrolet K30 3+3 - 350/TH400/NP241, Air Force/Forest Service Rescue Truck, for sale
01 Ram 2500 - 5.9L Magnum, daily driver
91 BMW 325i - Chumpcar series racecar
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