Noticeable Difference between 3.55s and 3.73s?

fiveoho · Mar 20, 2006

Grn92LX said:
If you're going to switch, 410's are what you want. No offense but this isn't rocket science. The difference on the hwy between a 390 and a 410 is maybe 100 rpm's. Your heavy very needs the gear. Like I said, i'll be doing 430's in my pump gas street car and yes it see's the highway

as i posted, im more concerned with the 1-2 shift rather than hwy speeds

Henceforward · Mar 20, 2006

I don't mind my 3.73s for daily driving.

fiveoho · Mar 21, 2006

anymore input guys?

Redrooster · Mar 21, 2006

The 94 up cars got the 2.95 1st gear along with a longer imput shaft that i'm sure of. So...yes there will a noticeable difference in the 2 transmissions.

fiveoho · Mar 21, 2006

Redrooster said:
The 94 up cars got the 2.95 1st gear along with a longer imput shaft that i'm sure of. So...yes there will a noticeable difference in the 2 transmissions.

like the sound of that

Nobody · Mar 31, 2006

No stock 94-95 Mustang came with a 2.95 1st. They are all 3.35 1st gears. The 2.95 was only available as an aftermarket transmission. Longer input shaft, yes, 2.95 1st, no.

A 3.35 1st will accelerate quicker than a 3.27 or 2.95 will with the same rear gear.

If you are going with a taller 1st gear, then you will want to shorten your rear gear to make up for the difference. Otherwise, your car will feel sluggish from a stop.

Case and point: My car has a 3.55 rear gear in it. It was fine with the 3.35 1st (3.35*3.55=11.89) Now I have a 2.94 1st gear in it and it's a dog off the line (2.94*3.55=10.43) this 1st gear/rear gear combo is equivalent to a 3.08 rear gear on the stock tranny (3.35*3.08=10.3). I am now going to a 4.10 rear gear to get that 1st gear multiplier back (2.94*4.10=12.05).

It's all clear now isn't it? :SNSign:

fiveoho · Mar 31, 2006

Nobody said:
It's all clear now isn't it? :SNSign:

i wouldnt call it clear. not that you done a bad job explaining...just me a slow learner. i do understand the concept now

5spd GT · Apr 1, 2006

Grn92lx - There is a difference between a street car and daily driver that sees more than 55mph on occassion, besides at the track.

I wouldn't go any higher than 373's with a daily driven (on highway too) car. I have 3:73's...

fiveoho · Apr 1, 2006

5spd GT said:
Grn92lx - There is a difference between a street car and daily driver that sees more than 55mph on occassion, besides at the track.

I wouldn't go any higher than 373's with a daily driven (on highway too) car. I have 3:73's...

1991GreeNLX · Apr 1, 2006

trust me 4.10's will get you out the hole quicker but, you also have to take into consideration your tire's and suspension. You do have to keep your tires planted on the ground. Didn't read in your sig your setup but i run 4:10's on my lx it's my DD i'm also running a TTC R-600 tranny. the gears are not as bad as people think. Then again it's me. I dont fear the gear after all it is a weekend car so just go ahead and get 4:10's and have fun with them.

fiveoho · Apr 1, 2006

i ended up going with a 3.90

this is a weekend car, so i think i will be fine.

C.Harris · Apr 1, 2006

I opted for FRPP 4.10s with my DD 5.0, but I also changed to a T5Z tranny with a 2.95 1st gear and 0.63 5th

fiveoho · Apr 15, 2006

C.Harris said:
I opted for FRPP 4.10s with my DD 5.0, but I also changed to a T5Z tranny with a 2.95 1st gear and 0.63 5th

happy with your 410 choice?

im just a little worried about my 1st. i know there wont be much of one, maybe not as bad as what im thinking...

Dark Knight · Apr 15, 2006

FWIW, I've run both 4.30's and 3.55's in my vert.. the 4.30's were quicker out of the hole, but didnt change 1/4 ET's at all.. just added one more shift. 3.55's trapped at 6k rpm in 3rd, 4.30's were at 6k in 4th..
I drive my car everywhere, so 4.30's sucked.. 2-3 hr road trips arent to fun when you're buzzing along at 3k rpm

soontobefastfox · Apr 15, 2006

I went from 3:55 to 3:73 and I didn't really notice anything, I mean the 3:73's are a little faster off the line but that is about it. I debated about 4:10's but I drive on the highway and I don't want to be revving too high.

fiveoho · Apr 15, 2006

if mine were a DD, id prob stick with what i go or go no steeper than 3.73s

weekends only and very limited "trips"....i should be alright

Woodrow · Apr 16, 2006

I have 4.10's in my daily 1st gear isnt bad, and at 80 I am turning like 26-2800 with a 3550, thats on the factory tach so i might be off a little

5spd GT · Apr 16, 2006

I'm at 2,600rpm with 373's...I'm sure your at 2,800-2900rpm...even with the 3550...

Mavrick · Apr 17, 2006

soylentgreen said:
I have 373s on my 5-speed. I think 355s would have been a better choice.

I agree. 1st gear is useless on street tires, mine get roasted with any throttle at all. I wouldn't waste your time going from 3.55's to 3.73's.

fiveoho · Apr 17, 2006

Mavrick said:
I wouldn't waste your time going from 3.55's to 3.73's.

kinda my thoughts

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