What gears do you have?

[grego37]

good info

 

[ga289stocker]

3.80 trak-loc
Toploader 4sp
25" tire
3064 rpm @60

 

[D.Hearne]

that 3 speed is killing me. if i had a 5 speed i would defiantly do like a 3.55+ gear

A 3.55 won't kill you without overdrive. This is the combo in my 89 Ranger : Explorer 5.0, Toploader 4 speed, 3.73 rear 28" tall tire 60 mph is 2687, 70 is right at 3000. 3.73 with 28" tires is the equivalent of 3.55's with a 26" tire. (what you'll have in a Stang) I drive mine everyday.

 

[Cobain03]

well i do not have stock tire size. 225/60/14 i THINK, i know its a 225

 

[D.Hearne]

That size with 3.55's will get you 2907 rpms @ 60 mph. You could go to 3.25's and have the equivalent of 3.55's with 26" tires.

 

[65ShelbyClone]

A 3.55 won't kill you without overdrive.

Yeah, I have 3.50s, ~25.5" tall tires, a Toploader (1.00 4th), and my 60mph rpm is about 2800.

 

[Smokinstang65]

289, T-5 Manual Trans, and 3.89 in a Detroit Locker ... as far as RPMs, couldnt tell you. I've never had a tach in the car, I just go by sound and feel. But I'll tell you what. 3.89's feel REAL GOOD, especially with a locker in a 9"

 

[Cobra5.0Jeep]

my 68 has a ford 9 inch with 35 spline axles, 3.89 gears and a detroit locker.
I am going to put a TKO600 in it and the engine is a 532 big block ford.