99Hawk262

iTrader: (19)

I've searched till my eyes hurt and want some feedback. I want to upgrade my 3.23's and really want the 3.90's. However, they've been on backorder everywhere since last October. I had a set of 4.10's but I really wasn't too keen on going that route so I sold them. I don't think I want 3.73's either as I don't see a big enough gain coming from 3.23's.

3.90's split the difference nicely. What differences would there be between the two. Most of my driving is in town and when I do go on the highway it's usually just for fun. I want the best gear for my PT4400. I take it to the track maybe 3-4 times a year. Is there any reason why one would be better than the other?

On that note, if anyone has 3.90's for sale, I'd be very interested .

Omega Doom

iTrader: (2)

man just go with the 4.10's! let em. hang a little! it's not much steeper then the 3.90's anyways!

BOLO

iTrader: (40)

I run 4.10's, but it's more for the track than street.

99Hawk262

iTrader: (19)

My only concern with 4.10's is how weak they supposedly are. I know 3.90's aren't going to be much better, but I hate to spend the money and then have my rear end crap out on me first time at the track. I should have just kept the 4.10's I had.

BOLO

iTrader: (40)

Knock on wood.... my stock 10 bolt is still holding up even w/150 shot. I know someday it will take a .dump! NO dought! We can't have it all, we want to go faster every time we go to the track, something will bound to break. So,we all know that to go faster, we have to spend $$$.
Why not just hold off on the gear swap and save up for a strong 12 bolt.

99Hawk262

iTrader: (19)

I thought about that too....but it might be awhile before I can go the 12-bolt route. I don't mind the 3.23's, but I think a gear swap would make the car that much more fun.

RoWDyWS6

i pulled harder on the roll races with the 3.73's (1-2 car increase pull)...i used to have 3.23's.. i say go 3.73s bro... i am thinkin of running the same cam u got or MS3 in the future with yank 4000..

99Hawk262

iTrader: (19)

I just don't think 3.73's are for me. I am considering 4.10's again though.

RPOWU8

iTrader: (13)

Save your money and go with the 4.11 12 bolt.

The 10 bolt may last a while, may not. I currently run a 3.89 in my 9 inch which, for my combo, is just about maxed out. Used to run 3.73 in my 10 bolt and did not see much difference going to 3.89's.(may go back to 3.73's) You have alot more converter and cam and can use the extra gear. Watched your video and your car is on the converter most of third gear.

Don't waste your time with 4.11's in a 10 bolt, put the $500 gear change toward the stronger rear.

My .02 worth.

Dee Jay

96autoformula

If your first worry is strength of the gear set....definitely just save that money for a 12 bolt in the future. If not, then 4.10's are a viable stand in for the time being. The point is that if you run that 10 bolt with a bunch of power, hard hitting stall, and sticky tires, expect carnage.

99Hawk262

iTrader: (19)

What do you mean by that?

Looks like the best advice so far is saving for a 12-bolt. I really wanted gears now, but I agree that the 12-bolt is the best idea. With my luck, 3.90's or 4.10's would not last even one pass. I do run sticky tires, and the PT4400 hits pretty damn hard....so that combination paired with new gears in the 10-bolt sounds like wasted money. Thanks for the feedback.

MattIROC

iTrader: (19)

I'd go with the 3.73's. Thats what I'll have if I choose to go with the same verter you have.

Scoggin Dickey

iTrader: (34)

I believe he means that your gears drop your rpm too much, so you're actually using your stall to maintain your rpms rather than your gears. IE, thanks to your 3.23 when it shifts to third it drops the rpms below 4400, so your stall is flashed up to 4400 until your gears reach the point where they would have you turning 4400rpm. I don't know that I made much sense trying to put it into words. It would be better for your stall and tranny temps to get gears

99Hawk262

iTrader: (19)

^^^2-3 shift extension is 5800-5900 RPM's. I will say that I am not using much of 3rd at the track, and the range I do use isn't the ideal range. The heat hasn't been an issue yet with the winter temps, but you bring up a good point. I'll have to keep a close eye on my temps when we get into the hot summer months. I'll just play it by ear. If I can survive through the summer with 3.23's, then hopefully a 12-bolt will be added this fall. If not, then hopefully the 3.90's aren't still on backorder!

TA1364

iTrader: (11)

If you dont cruise on the highway often or for very long time go with 390s. Keeping up with traffic with 373s at 70mph gets old, 390s would be even worse. Im not sure where 410s would put 4th gear at, but if you ever did heads down the road it would be pretty close to going into 4th in 1/4. Now staying with 10bolt and doing gears now or 12bolt at pretty much end of racing season...thats tough choice.

99Hawk262

iTrader: (19)

The difference between the three according to a gear calculator isn't that drastic actually. It appears that it would be roughly 150 RPM's between the three at highway speeds. I'm still gonna try to hold out for the 12-bolt as long as I can.