Posi Trac rear end or not?

[drbb]

Some of you are using a posi trac rear end and others are not? For those of you who have one, would you do it again or would you change anything? I hear that there is a clunk that goes along with a posi trac rear end? Have any of you experienced both with and without? I have a 600 Hp engine, is hp alone enough of a reason to get posi trac or is it just necessary for a specific application? I am still trying to get all my ducks in a row before ordering. Thanks.

[RJacobsen]

Here’s my 2 cents worth, If you want 2 big black marks when you light up the tires, you will need a posi rear end. Without it you only get one black mark. The down side is that with 2 tires spinning you have less control, not a good thing if you plan on driving on ice.

[robbinsshkr]

If your gonna have 600 HP, I think you would regret not getting the posi. My personal opinion.....posi is a must have or you'll end up with a lot of useless HP off the line.
Eddie

[Jerry Cowing]

If you bought your Cobra to drive around like a grandmother, then you don't need a posi. Or you can buy a posi.

[Aggressor]

My experience with the Powerlock rear is that there are no clunks or notchiness associated with it. You really don't notice anything except the rather good hookup when launching.

-Geary

[spd4me]

I"ve got a posi and like the way it hooks up and goes. It does scare me once and awhile when I make a sharp turn a slow speed and you hear the clutches clink. I would suggest doing a web search on it and get some real tech info. I read an articele in racing book and they like the posi because if going around a corner and one tire hits oil or slick spot the other wheel will pull it trhough so both tire remain at same rpm. You do need to be sure you put the right type of oil in it (non synthetic) and posi track additive.
Bob