Okay, Im ready to get into my next large group of mods and I need some help with a 4.10:1 gear swap.

Currently, Im running through the traps in 4th gear above 5000 rpm and this is with 6200rpm shift points. If I do move over to a numerically higher gear is it "bad" to go into 5th (OD) during the 1320? I think I will be borderlining having to allow it to go into 5th if I do run the 4.10s.

But... I was also thinking that since there is no shift point for 4th-5th the only thing that will stop me from having to go into 5th is the Rev limit @ 6800. Is this true?

Basically, I want to get the most out of what I've got and gears is the next thing to toss in. I'm just not familiar with these above issues and Im wondering if I should step down and stick with ordering 3.90s instead.

Thanks for your help in advance.

-Dan

 

Assuming you have stock dia tires, you should be able to run 122mph at 6200rpm in 4th gear with 4.10s. That would go to about 128mph with 3.90s. So, unless you plan on dipping into the 10-sec range, I think you should be fine. Not many 11-sec cars exceed 120mph.