deciding on mini spool gm 8.5 78 z28
 

any experience w/ installing issuesd?

Sorry to say, But if your going to be useing this on the street..You won't be hearing want you want to hear..:D

Bad ju-ju for a street driver, Bwana. Use an Auburn posi or other brand.....
Auburn Gear 542018 Auburn Gear Differentials

Can only be installed in an open diff carrier.
Some brands require the c-clips to be modified on the bench grinder.
Not recommended for street use.

why do you want a spool?maybe we can offer better ideas?Is traction an issue? are you drag racing? are you making horrendous power?

Mini spools are for street stock dirt cars. They have essentually stock 2bbl engines and
are not on pavment. What yhou are trying to do will not work. You are just going to bust axles.
This is not for the street. Get a Auburn posi or a Eaton posi. Do nt use any of the factory GM stuff
or a spool. Save your money and get the Auburn or Eaton posi. It will pay off in the end.