Rainson

Ya, Brenspeed rocks. I got all performance parts from them.

looks like 4.10s is more fun to drive..thx bro.

HxCGuitars

I'll go against the grain and say 3.73's

My reasoning is I'd still like to have my first gear, especially with city driving. I know many others would disagree, but I just like starting in first. I also like having a higher top speed in fourth.

Yes, 4.10's would be awesome, but for a DD, I'd go with 3.73's.

07BLACKGT

fo ten's

REDBOSS1

Well I've went full circle and drove with 3.55's, 4.10's, back to 3.55's and now 3.73's all though the 3.73's are in the Boss so it's a different car that I can't compare because it's a six speed. I can however tell you that with my 08'GT I had 4.10's put in before I went supercharged and I loved them but once I got the supercharger on I thought it was too much gear and it didn't really allow for the supercharger to really "work" and I couldn't hook for love of god so I went back to the 3.55's. All that said if you're staying NA I would go 4.10.

wcgman

4.10's FTW all day every day. Ran them NA on 3 stangs and then kept them on this when I SC'd. I know folks say its a lot of gear and "first is useless" and it is if all you do from a stop is smash the gas. But if you can control yourself and keep the tire spin down....strap in & shutup cuz this is gonna be a wild ride!

Soldier GT

Even with a S/C (centrifigual) 410's are a good buy. I must admit it takes a little getting use to but it can be done. Just wondering.. Anyone running 410's with a KB?

Rainson

Ya, I did alot research these couple days. I'm not going to S/C this car, so 4.10s should be the ways to go..

Not sure if someone runs 410's with KB, but from what I saw was there are some Roushcahrged with 410's

JIM5.0

Unless you are racing or looking for a weekend street bruiser, I say don't get the 4.10:1 rear gears.
For one, your TR3650 already has a very deep first gear, and with 4.10:1 rear gears, you will make first gear virtually useless (i.e. you will have to drive around starting off in 2nd gear). You can still start of in 1st gear, but you will have to shift to second very fast in a normal driving situation.
But at the drag strip, that 4.10:1 gear with the TR3650 1st gear makes for a great launch so long as you have the tires to put your torque on the asphalt where it counts.

Now, if you have a built aftermarket tranny with a first gear that is very shallow (some 1st gears in such trannies are only 2.5:1), then you definitely want the 4.10:1 rear gears to compensate.

Vader GT

I run 3.55's in both my cars. Both are supercharged, so I planned accordingly.

1. If I had a 5SP NA car I would not go more than 373's. If I had a 6SP NA car I would go 4.10's.

2. If I had an auto, I would stay at 3.55's.

Just my .02 & by the way most of the recommendations above are based on personal experience. Good luck!!!

05 Mustang

+1^^

my thoughts exactly