I tore up another rear. the pin that runs throught the posi unit came out and ran into the pinion gear and destroyed it. it was the type of posi without the clutch disc in it. this is the 3rd time this type of posi has came apart on me like this. all different cars but same type of posi. the clutch type has never came apart on me like this.
is this type of posi unit just not as strong? I have all of the 3 types of cases,741,742,and 489 and i want to build a unit to hold up to my driving. I also have a couple of the clutch style posi units that worked when i puled them out of the cars they were in.
I am running a dart with a edelbrock head 360,9.5-1 pistons,488 cam. in it with a 4 speed.the rear is quarter tubbed to fit n50 15 mickey thompsons on it.and i was wanting to run it on street nite at the strip.
what case would be best to use? also what one of the posi units is stronger? i will be running 4.30 gears.
also what brand of parts would you recomend?
thanks.