Getting new gears, some questions

66StangFastback · Mar 14, 2006

Ok, so an 8" will hold up to about 400 at the flywheel and 350 at the rears if not abused? Possibly mroe if you don't run slicks? Can't exactly abuse a rear end with a C4..

57fairlane · Mar 14, 2006

66StangFastback said:
Ok, so an 8" will hold up to about 400 at the flywheel and 350 at the rears if not abused? Possibly mroe if you don't run slicks? Can't exactly abuse a rear end with a C4..

Yes, If you don't run slicks you should be fine.
Like most other mechanical things related to cars . . .

The life of the object is directly related to

A. How hard you beat on it

and

B. Who built it

steel1212 · Mar 14, 2006

66StangFastback said:
Ok, so an 8" will hold up to about 400 at the flywheel and 350 at the rears if not abused? Possibly mroe if you don't run slicks? Can't exactly abuse a rear end with a C4..

You obviously have never seen a hard shifting shift kit in a c4 or one with a transbrake and a lot of torque

A stock c4...doubtful a built c4 for racing yeah it can be done. Granted its not like dumping the clutch every gear in a stick...thats why I went to the 9. My t-5 is my weak link now. With my current power I think it will last... a few seasons at least lol.

66StangFastback · Mar 14, 2006

steel1212 said:
You obviously have never seen a hard shifting shift kit in a c4 or one with a transbrake and a lot of torque

You are correct sir. I've got a lot to see though...I'm only 16

LUCAFU1 · Mar 14, 2006

66StangFastback said:
What all have you done to the rear. I've heard stock rears from the fox body stangs and explorers won't hold a whole lot more than a 9"?

not a whole lot.
straight axle 8.8s have seen 8 sec passes w/o any problems (built of corse)
They are pretty strong but it just takes some money.
same goes for 9" axles. Im building one now and that takes money too. I lot of money. I basically replaced everything so it wont break. im gonna have one sweet as roller, to bad no engine to put in it.

xj220 · Mar 15, 2006

Alright, so I'll get 3.55s. Now I'm curious, with limited slips, how often do the clutch packs need to be replaced?

SoCalCruising · Mar 15, 2006

If your T-5 has a 3.35 first gear, then I agree with D.Hearne on 3.55s. If you have a 2.95 first gear, then you can use 3.80s without first gear being too low (truck-like).

Yeah, the '06 will flat smoke the tires in first, but first gear is lower, I'm pretty certain, than 2.95. My '66 has a 2.95 first gear and 370s. It seems like a good combo to me.

iskwezm · Mar 15, 2006

i have a 2.95 first and 3.80's, i dont think its useless.............but i do plan on going to 4.10s or more

LUCAFU1 · Mar 15, 2006

xj220 said:
Alright, so I'll get 3.55s. Now I'm curious, with limited slips, how often do the clutch packs need to be replaced?

when you get the one wheel peel. i think it woul last a good while. why not get a locker?

xj220 · Mar 15, 2006

I don't want anything too serious for a rear. Right now the car is used for spirited driving on twisty roads.

CornerCarvin67 · Mar 16, 2006

Dude... Please... listen to the advice you're being given here. You sound just like my neighbor kid. Good kids... just don't know a whole bunch.. YET. The chances you'll need to replace the clutch packs are slim, really. You don't drag race for a living, do you? It sounds like a buddy of yours who just happens to know a technical term such as "clutch packs" is trying to impress/scare you about them. In the end it doesn't matter what you do for a locker or limited slip.... just be smart and pick one. And the odds are that you have a 2.95 first gear... go with the 3.80's and move on to the next project. Putting in gears and a traction device is not "too serious for a rear".

xj220 said:
I don't want anything too serious for a rear. Right now the car is used for spirited driving on twisty roads.

xj220 · Mar 16, 2006

I am listening to the advice. I've heard from numerous sources of having clutch packs wear out so I wanted to confirm what I've heard, or seek some truth to the matter. This isn't a small purchase as $1k is not something that can easily be thrown away by an average person. We don't do any of the work ourselves so a shop must do it. I just want to double check everything before I commit.

CornerCarvin67 · Mar 16, 2006

Then get the Powertrax unit I mentioned before. Very simple and effective. NO clutch packs to wear out. Not loud like a Detroit unit either.

John Z · Mar 16, 2006

xj220 said:
This isn't a small purchase as $1k is not something that can easily be thrown away by an average person.

I hear ya on that one. I put a lot of thought into much smaller purchases. You are getting good advice here. :SNSign: I do not have a limited slip and do not really miss it. I saw one article where there was a before and after test of a limited slip install of a modestly modified mustang. The limited slip improved 1/4 mile times by ~0.1 seconds. In the world of drag racing that can be a lot, but for the street??? Also if you read around, depending on the limited slip selected handling manners in the rain and snow suffer. So I do not think the "need" for a limited slip is a forgone conclusion.

Concerning the rear end ratio, I just posted some math on http://forums.stangnet.com/showthread.php?t=622949
Might be useful for your situation.
HTH

xj220 · Mar 16, 2006

Thanks, given everything, I think I'll pass on the lsd because it's wet out here quite a bit and I'd like to keep traction in bad weather.

LUCAFU1 · Mar 16, 2006

how would a lsd hurt you in wet weather and snow? i would think both tires providing traction would be better. try getting up a grassy hill thats wet with one wheel, not fun. i would do it right the first time.

John Z · Mar 16, 2006

LUCAFU1 said:
how would a lsd hurt you in wet weather and snow? i would think both tires providing traction would be better. try getting up a grassy hill thats wet with one wheel, not fun. i would do it right the first time.

As long as you only drive on straight roads no problem. However, both tires hook up while your in a turn and you're headed toward the ditch.

D.Hearne · Mar 16, 2006

LUCAFU1 said:
how would a lsd hurt you in wet weather and snow? i would think both tires providing traction would be better. try getting up a grassy hill thats wet with one wheel, not fun. i would do it right the first time.

I take it you've never applied too much power with a trac-loc unit on a slippery road and done a 180 in the middle of the street Or done what I did recently with the 06 Stang, I mistakenly down shifted from 5th to 1st, hunting for 3rd on a wet clover leaf interstate offramp. The Stang went all over the place til I got it under control.

tylerrocks · Mar 16, 2006

Maybe I dont know exatcly how a limited slip works. But it my understanding that the clutches allow it to peg-leg until some tourque was applied. Am I right? If so, it would not hurt wet traction unless your right foot got heavy.

xj220, go LSD (whoa man,) 2 wheels>1

LUCAFU1 said:
try getting up a grassy hill thats wet with one wheel,

a grassy hill,

Edit: ^^^^^^ we need some cooler laugher faces

Double Edit: This is my 200th post

65ShelbyClone · Mar 17, 2006

D.Hearne said:
I take it you've never applied too much power with a trac-loc unit on a slippery road and done a 180 in the middle of the street.

The key here is not applying too much power....and not going from 5th to 1st.

I personally find an LSD easier to use in slick conditions.

Also, get the LSD and get the 3.55s. In a light car like a '66 with a T-5, it'll be tons-o-fun.

Getting new gears, some questions

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