What gears do you have?

[Cobain03]

engine, tranny, and gears?

also, could you tell me a quick rpm that your 60mph is?

 

[D.Hearne]

Why the question? What are you trying for in rear gears?

 

[blown65]

3.89's, 26" tall tires, C4 Tranny. Turning about 3100 at 60mph.

Going to 4.56's though here pretty soon.

 

[66Runt]

.

 

[blown65]

66runt, that seems pretty much dead on with mine.

Man, I'm going to be about 3600-3700 rpm at 60 with my new gears.

 

[D.Hearne]

You can figure the tire diameter using the size of the tire. The first number is the width, the second is the aspect ratio. For instance, a 275/60/15, you mulitiply 275 x .60 to get the tire's sidewall height, then mulitiply times two, divide by 25.4 (to convert to inches, the width is in millimeters) and add 15 to get the diameter. To get the circumference, multiply the diameter times Pi which is 3.1416.---------- 275 x .60 = 165-----165 x 2 = 330------330/25.4 = 12.99 + 15 = 27.99---- 27.99 x 3.1416 = 87.94. Another way to find the rpms at 60 mph is to divde the circumference into 63,360 (inches per mile) 63,360/87.94 = 720.5, multiply this times the rear gear ratio to get rpms @60mph 720.5 x 3.55 = 2558 (1 to 1 final drive) for overdrive multiply this times the OD ratio 2558 x .63 = 1611

 

[CraigMBA]

5.0 w/carb, T-5, 3.55 gears, and a 245/50/16 tire last time my car moved.

I'd like to have a closer ratio trans and more gear.

 

[2bav8]

347
Tremec TKO
4.11
2200 RPM w/245-50-16 tire

 

[rbohm]

the current projected combination;

289
T5
3.55
1800 rpm

 

[dennis112]

393 w/toploader 4 speed. 24" tall tires

3.70=3200
4.11=3400

 

[67efivert]

look at this its been right for me
http://users.erols.com/srweiss/calcmph.htm

 

[steemin]

347
G Force T5 (.59 overdrive)
3.89
255X45X18

approx. 1600rpm's @ 60mph.

Scott

 

[Cobain03]

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

 

[dodgestang]

4.11
1st 2.85
2nd 1.7 something
3rd 1
4th .68

25.2'ish inch tire (255 40 17)

 

[Steve69]

302

T10 4 speed.

4.56

3600 RPM at 60mph.

 

[BornInAFord]

5.0L, T5Z and 3.40TL and 1700RPM at 60MPH. Great combo for pickup and freeway cruising as it's like having a 3.58:1 rear with a toploader in 1st, but a 2.14:1 rear gear with a toploader in the T5z's 5th.
Daniel

 

[Cobain03]

i would LOVE to have a 5 spd automatic in my car. if it wasnt so hard id do it!!!!

 

[S-Car-Go]

What transmission do you have? 3 spd, auto or manual? 2.80 gears?

 

[Cobain03]

3 spd auto 2.80 gears

60 mph at about 2200

 

[CraigMBA]

That one's easy.

Buy an adaptor plate and a crossmember and you're disco.

Sorry, thought it was a manual. Hey, I changed out my C4!