I need some opinions here, I have a T-5 with a 4.03 first gear ratio, Im putting in a granada rear end with 2.79 gears, should I go with a lower gear in the rear, or will this be fine for street performance?
Are you sure that you have a 4.03 first gear? I have never heard of one that low. If that is right you will have the same with 2.79 as a toploader with 2.78 first gear would have with a 4.04 rear gear.
If you'll post your gear ratios, tire size, and what other rear gears you are considering I'll print you a chart. I made a little program when I was deciding which 6 speed gear set to buy. To see an example check this chart out for my car