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Adger Smith · 06-10-2017, 02:12 AM

As the pinion gear gets more teeth on it the diameter usually increases.
That increase in size has an effect on increasing the root width and diameter of the gear teeth. You need to check it to be sure, but it is usually the case.
Ask an old Modified or Gas racer which gear set held up better.
Dana 6.50 or Dana 6.17.
6.17 had a larger diameter pinion gear.

06-10-2017, 02:12 AM	#10
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Gm 12 bolt 430 vs 433 gears As the pinion gear gets more teeth on it the diameter usually increases. That increase in size has an effect on increasing the root width and diameter of the gear teeth. You need to check it to be sure, but it is usually the case. Ask an old Modified or Gas racer which gear set held up better. Dana 6.50 or Dana 6.17. 6.17 had a larger diameter pinion gear. __________________ Adger Smith (Former SS) Last edited by Adger Smith; 06-10-2017 at 02:13 AM. Reason: sp