Hey Guys,
Actually, it is rare to clearance the reduction housing when installing a 4:1 gear set. Maybe 1 in 10 or 15 will need to be clearanced.
We don't quite yet have the 4.04:1's ready. We should be getting them mid to late this month (2 or 3 more weeks), and yes, they will not only be TS (total spline), but will also feature a factory 2 degree taper on the shift hub teeth and also be made out of stronger material composed of a greater nickle mass. Also, the sides of each teeth are rounded and the chance of chipping a tooth is greatly reduced therefore.
And as you know, it is 0.04:1 lower than the A/A 4.00:1 gears
In terms of why a 4.0 instead of a 4.7, I have had people call in and tell me that 4.7:1 is way to low and people would have to be crazy to run it. So yes,
it is definitely user preferenced.
Regards,
BigMike
