phils89sc
Registered User
I bought a set of 3.55:1 gears for my 89 SC. Mine is a 5 speed, and already runs very quickly thanks to generous bolt-ons (70mm MAF, full Flowmaster/Dynomax/Custom 2.25-2.5-2x2.25", hi flow cats, 10% OD pulley on rebuilt SC, removed intake air silencer, and coming soon, custom Intake tube w/ conical K&N cold air intake.
When I driver her now, the stock trans shifts ok, but it seems to have quite an RPM drop between gears. I do not know what the rear gear ratio is for the factory 5-speed 89 SC's, but this causes some drop in performance because of the LAG between gears (and we all know how hard it is to speed shift an M5R2 tranny, like speed shifting an F150!!). I know the 3.55's will give me a better bottom end , but will get rid of some of this RPM fallout between gears? I would guess and say that the M5R2 tranny is somewhat of a wide ratios trans. Do you agree? Any opinions?
Thanks
Phil
When I driver her now, the stock trans shifts ok, but it seems to have quite an RPM drop between gears. I do not know what the rear gear ratio is for the factory 5-speed 89 SC's, but this causes some drop in performance because of the LAG between gears (and we all know how hard it is to speed shift an M5R2 tranny, like speed shifting an F150!!). I know the 3.55's will give me a better bottom end , but will get rid of some of this RPM fallout between gears? I would guess and say that the M5R2 tranny is somewhat of a wide ratios trans. Do you agree? Any opinions?
Thanks
Phil