How does gear ratio affect rpm?
Hear this out loudPauseHigher gears multiply torque less, but they require less input speed to deliver the same output speed; that’s why axle ratios also determine engine cruise rpm. Lower 4.10:1 gears would make the engine turn 4.10 times for each turn of the tire, so lower gears cause higher engine rpm at any road speed.
What is the gear ratio on a 89 Mustang GT 5.0?
On my 89 Mustang GT 5.0 at 70 mph I turn about 2300-2400 rpm in 5th gear, ( a .69 to one ratio overdrive ) in 4th maybe around 3200 ( guessing ) ( 1 to 1 ratio ) as it red lines at 6000 rpm doing 120 mph in 4th and the over speed govenor shuts the engine down at 6250 rpm ( like running out of fuel ) to prevent engine damage.
What’s the speed in 5th gear on a T-5?
Slower running motors may be quieter. If you’re turning 2300-2400 RPM in 5th gear then you don’t have the stock 3.08 gears. 3.08 gears with a T-5 and the stock 225/60/R15 tires, will yield a speed of about 85ish MPH at 2400 RPM in 5th gear. 3.73’s would put you at about 70 MPH at 2400 RPM though.
What’s the average speed at 2400 rpm in 5th gear?
If you’re turning 2300-2400 RPM in 5th gear then you don’t have the stock 3.08 gears. 3.08 gears with a T-5 and the stock 225/60/R15 tires, will yield a speed of about 85ish MPH at 2400 RPM in 5th gear. 3.73’s would put you at about 70 MPH at 2400 RPM though.
What should the gear ratio be at 65 mph?
Number Ring Gear and Pinion Ratio (3.08, 3.73, 4.10, 4.56, etc.) Tire Height (31, 32, 33, 35 etc.) MPH Transmission Final Gear Ratio (2.54, 1.43, 1.00, etc.) Calculated Results Engine RPM “Ideal” 65MPH Cruising Speed RPMs Based on Tire Size (estimated) 27″ 28″ 29″ 30″ 31″ 32″ 33″ 34″ 35″ 36″ 37″ 38″ 40″ 42″ 44″ 1,752 1,690 1,631 1,577 1,526 1,478
On my 89 Mustang GT 5.0 at 70 mph I turn about 2300-2400 rpm in 5th gear, ( a .69 to one ratio overdrive ) in 4th maybe around 3200 ( guessing ) ( 1 to 1 ratio ) as it red lines at 6000 rpm doing 120 mph in 4th and the over speed govenor shuts the engine down at 6250 rpm ( like running out of fuel ) to prevent engine damage.
What’s the RPM of a Mustang at 70 mph?
However, the car feels like a dog getting off the line. A friend of yours suggested to jump to 4.10 rear gears to help with acceleration. This calculator will help you determine that with 4.10 gears, your engine will be spinning at 2,368 RPM at 70 mph.
If you’re turning 2300-2400 RPM in 5th gear then you don’t have the stock 3.08 gears. 3.08 gears with a T-5 and the stock 225/60/R15 tires, will yield a speed of about 85ish MPH at 2400 RPM in 5th gear. 3.73’s would put you at about 70 MPH at 2400 RPM though.
Slower running motors may be quieter. If you’re turning 2300-2400 RPM in 5th gear then you don’t have the stock 3.08 gears. 3.08 gears with a T-5 and the stock 225/60/R15 tires, will yield a speed of about 85ish MPH at 2400 RPM in 5th gear. 3.73’s would put you at about 70 MPH at 2400 RPM though.