i have a stock s-197 5sp gt...and was wondering whats better 390's or 410's?....plz help me decide :banana:
i been wanting to ask too... i have 4.10 it came with the car and i been thinking to change it to 3.9, but dont know.
410's it is..im hoping to do every bolt on i can do...i have some gm's in my area that need a beating...haha
what would 4.10's do for an automatic
I know a good shop/tuner in CLovis if you're interested. Does alot of New edge and S197 work.
Just an FYI.
I still get 22.8 mpg on the highway cruising 65 with my 4.10s and setup.