85 cutlass.

[youngwhip]

how do i find out the type of rear end i got on my 85 cutlass. it came with the 307 old with 200r4. and i now i got a 330 old in it and now about to put a 350 tubro on it. so i want to start on my rear end next, and im lost a lil bit. can anyone help me off on this project?

my goal is to go posi and 3.73 gear in it. please help me if u can!

 

[Qdub24]

Most likely you have the 7.5" rear.

 

[442Jayp]

how do i find out the type of rear end i got on my 85 cutlass. it came with the 307 old with 200r4. and i now i got a 330 old in it and now about to put a 350 tubro on it. so i want to start on my rear end next, and im lost a lil bit. can anyone help me off on this project?

my goal is to go posi and 3.73 gear in it. please help me if u can!

let me kno when u figure this out..i have a 84 cutlass supreme with a 307 and the stock trans...im about to put a 350 and a turbo350 trans but i dont kno wat rear end i hav either...i waslooking to add 3.73's also

 

[Ausby]

they all came with 7.5's.