Hey guys what kinda rear end came in 1991 305 firebirds? was it a open diff or lsp

 

Since "1991 firebird is pretty vague heres a list of all combos for that year

https://www.thirdgen.org/1991-pontiac-firebird

 

My 305 TBI was an open diff 2.73.

 

Its a 1991 firebird tbi 305, auto trans. Its probabley a open diff with 2.73's. Do these open diff's allow you to do donuts? or do you have to get a posi?

 

any1?

 

Turn sharp and stomp it, an open diff doesnt prevent you from tearing it up

 

lol ok. my buddy just got one in his 89 firebird tbi. and he said it wouldnt do donuts, it would just make a wide turn and the *** end wouldnt swing. he thought it may have something to do with the open differential and not having a posi...i dunno