SSgtD6152

[sm=wtf.gif]what 5.0 gears is this thing F-ed up?

Tire, Gear & Speed/RPM Calculator




Tire dimensions:
/ /

or

Slick diameter:
inches



Gears:


Select your transmission:
T-45 (96-2001 GT, 96-99 Cobra) TR-3650 (2001.5+ GT, 2001 Cobra) Tremec TKO T-56 (2003 Cobra) T-56 (2000 Cobra R) T-56 (Viper) T-5 (79-91,93) T-5 (1992) T-5 (pre-99 V6) T-5 (99+ V6) T-5 (G-Force) 4R70W (std 2.40) 4R70W (wide 2.84)

Calculate speedRPM at in 1st2nd3rd4th5th gear



Your tire's diameter is 25.976 inches
At 80 MPH in 5th gear, your motor is turning at 3,209.1 RPM

4.6LPoppy

You can tell very easily in 10-15 minutes with a floor jack, some masking tape, a Sharpie and a calculator and some 5th grade math. Jack up the rear end. Mark the tire and wheel well with tape and arrows to line them up. Put a tape with mark on the rear end housing pointing at the drive shaft. Wrap a piece of tape around the drive shaft and mark a line on it to line up with the arrow on the housing. Now turn the marked rear wheel slowly around and count the turns the driveshaft makes around to its mark. When the wheel has made one exact revolution mark the tape on the drive shaft against the arrow so you can tell how much the last partial turn of the drive shaft was (take the tape off and measure the last partial turn mark as a percentage of the circumferance of the driveshaft tape). Do the math. If the drive shaft turned around 4.1 times it's a 4.10; 3.73 times its a 3.73, etc. Takes 15 minutes but may be a challenge if you went to public schools. My guess is you have 3.73 with that rpm and speed, but I'm a stick shift guy so what do I know? Also, you'd better check to see if you have some forged lower parts before you bolt on a supercharger or you won't have any use for a rear end!

JJ03MustangGT

4:11 is a optional gear ratio to a 4:10...ive seen em before. i have 3:90's, and on my uncalibrated speedo at 80 in 5th gear im at 2200. so i would think a 4:10 sounds about right

bransdaman78

4.11 is GM 4.10 is Ford.. thats my take on it

JJ03MustangGT

i havea friend with 4:11's...i wanna say there motive. i also had the option of doin 4:11's in my bronco but i went with 4:56