You shouldn't have a problem hitting the limiter but that all depends on what you will trap. Use an online calculator to see what rpm and gear you will cross the line at

 

I'll have to look into that. Thanks for the help buddy. Maybe someone running some 4.56's will chime in with some more advise.

 

I have 4.56's with 275/55/20's. I love the gears. I was debating on going with 4.30's, but am glad I went with 4.56's.

 

So there not bad for street use? Does it still pull hard on the top end?

 

Yes they still pull hard on the top end. Just for comparison, my buddy has a cammed ls3 single cab truck with 3.73 gears, on motor from 65 he starts to pull on me and then around 100 I start pullin him in and catch up to him.

 

wow. so 4.56's pull harder on top then the 3.73's??

 

I don't mind them on the street at all. The tall tires help a lot. I love the way they pull at high RPM's.

 

i wouldnt mind cruising 80 at 2800 rpm. the only reason ide ever jump on the highway is to drive it to work...and maybe a couple highway pulls. haha

 

anyone with drag racing videos using 4.56's, post them up. id like to see how the perform at the track.

 

I have 4:56s in my 02, mods in sig. It turns 3k at 80 with a 28" tire, and around 2600 at 70. I ran it in the 1/8th and it would shift into 3rd right before I crossed the line shifting at 6500rpm. I absolutely love it on the street and everywhere else for that matter. It needs a looser stall to take advantage of the low end. The top end is really surprising to me. Race my buddies 96 vette from 50-120 and put half a truck on him. We stayed even until my third gear and I pulled away from about 100-120. The top speed at 6500 is right around 120, with a 28" tire I think it is 118. So as long as your not trapping 120 in the quarter you will be fine.