"spool 40 spline gun drill. Aluminum case🖒🖒..we did a back to back test with a 8.3/4.vs9 in a 69 dart that the 8.75 ring and pinion would only last 100 pass before they would fracture💣💣... the 9-inch was only 400 slower.... the pinion on a 9 inch is much lower enabling the car to Be set up lower... 9in all day any day"
In your test, do you mean .04, or .004?
Everybody talks about the 9" in-efficiency, and I read where 3 rear types were compared. But in that comparison an atmospheric change could have easily negated any and all differences.
Has anybody seen/done a torque in/torque out test? I just find it hard to believe this rear is not efficient. I run two of them.
.004 and we think it was mostly the increase in weight not efficient... I think a large gun drilled 40 spline can be lighter than a 35-spline gun drill... check with the company that you are buying from... because of the diameter of the 40 spline axle they can put something like a 1 inch gun drill
In the 8s N/A.with Brett miller W8's 5.07 at 133 at 2700lb
