gspfunk

I'm w/ onyx...if you're gonna get a blower, go w/ 3.55's. Boost likes more engine load!!

BlackSVTsnake302

55s just dont seem like enough..but I could be wrong

OnyxCobra

it's enough for most all practicality, just depends how much u want I guess... keep in mind you're not building a drag car.

I G Joe

cant go wrong with 73's you probably wont notice too much of a difference between the .08's to .55's just go the extra step and go with .73's and you'll be happy.

tokinGLX

back in washington, my friend had a blown 89 with 3.73s. it was his dd, that saw a fair share of freeway time. he said that 1st gear was pretty much useless, he would just spin through it. said that he wished he had the 3.55s. if i was you, i would talk to as many people with a supercharger as i could, and get their opinon, as its a completely different car than a n\a one

OnyxCobra

yeah right, if that was true... it was an insane difference.

horatio102

I don't have a blower (yet) but I'm putting down over 260 to the tires and first gear is pretty much useless if there's a hint of rain, not sure what gears I've got. I never bothered to jack it up and count rotations, but it seems like 3.08 or maybe 3.27. Whatever it is, it's not stock.

BlackSVTsnake302

if u have a 91, I think its got 2:73 stock or somthing like that

Blue Oval

3.08 is what my 90 GT came with stock,

91hatchgt

My 91 hat 2.73's stock, and I got 4.10's... My buddy had an 88 with 4.10's he put on a blower, and had to drop the gear to a 3.55 or else he would be going into OD (5th) across the finish line. Even with 3.55's he was trapping 6k RPM.. That was with a Vortech 9lb.