1970 Challenger TA with 3:91 Gears.
Which is correct for a 489 case pinion spline. A 10 spline pinion or 29 spline pinion. Did 1970 use both splines. Which application for which car.
Something not adding up. Ring Gear # 2070225 3.91-1 MS291 8-4-69
Pinion # 2881460 3.91 3-6-69 10 Spline 7290 Yoke

Last edited by VCODE; 03/24/23 02:53 PM.
Mom & Dad let me buy a brand new 70 Challenger R/T 440 Six-Pack Super Trac Pack when I was 17

(Robert what is a 440 Six-Pack)