Posted by Vaughn [126.96.36.199] on Friday, March 01, 2019 at 16:36:06 :
In Reply to: 49 FFPW diffs into 1955 FFPW, PIF confusion posted by Tweety [188.8.131.52] on Friday, March 01, 2019 at 14:03:54 :
Pay attention to the ratio's. 4.88 is 8-3/4 ring gear, 4.89 is 9-5/8 ring gear. You can replace a 9-5/8 unit with an 8-3/4 unit but you have to have step down studs and multiple gaskets. As long as you're staying with the same size unit, and just changing gears, 5.83 to 4.89, yes. I'll see what I can do with the header to avoid confusion.
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