where would be a good place to post this??? Which kind of rear diffs are more effective for racing?

 

What kind of racing? Different kinds of racing require different differentials. A car that will only be drag raced needs a spool. A car that will be drag raced, but still see some street use needs a Detroit Locker. A car that is a little more street than drag race needs a clutch type differential like the Eaton posi. A road race or auto cross car needs something like the Torsen or Truetrac.

 

i want a 350-400 hp street car but that would be decent at the strip.
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ohh and im on a budget lol! but want something thats going to be worth the litle extra money.

 

is it auto or standard? for a standard id use a 4:11 and an auto a 3:73. that would be the best street/strip id go with. if you were worried about fuel milage i guess a 3:42 for auto would be better but not by much.

 

In my opinion the Eaton is the best street/strip differential that you can get for a GM car. I don't like the Auburn at all for several resons, and the Torsen and Truetrac sometimes have some issues with one wheel spinning when doing a burnout. I think the Eaton is worth the extra money. It can be tuned, rebuilt and it will last longer than the other clutch type differentials.

 

its an automatic