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I have gone 11.teens with a 3.91 8 3/4 with stock 30 spline axles, a Detroit locker, and 10.5x28 slicks.
At your power levels and ET desires, you will not hurt an 8 3/4 with spool and good axles.
Be aware of what you are doing on the street, you should be fine if you respect the possibility of a...
On my Superbird even with Problem
Solver bushings the most I could get was 3 degrees on the drivers side and 3.5 on the passenger side any more than that and the camber went out the window.
Some pictures show a rallye dash with round instruments and some show a sweeping speedometer dash. My '70 Coronet 500 has the sweeping dash. If the R/T dash is also sweeping is there a different top speed shown?
koosh said:
Where should the dash switch be grounded? Frame? Can i run a separate ground wire from some place on the switch to a known good ground ?
What he was asking was if he added a wire from a good ground to the wiper switch, that would eliminate the switch not being grounded correctly...
A new 8 3/4 setup will cost the same as a new D60. Just spring for a fresh D60 with the gears you want and forget about the diff. Or spend the same on an 8 3/4 and worry about it.
So, your point has nothing to do with "tubular", but moving the BJ back will increase caster?
In regard to caster, in your opinion, how much caster is enough, and can you share any downside to be had with adding additional caster?
Be careful, that last one is maybe a trick question.
Let's get something straight first ... the switch is an absolute nightmare to get at once the dash is installed. Removing the bezel ... there's a good risk of damaging the dash pads. So, do every possible check on the motor BEFORE tackling the switch. That said, do you have the correct "3-speed"...