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

Why do you change the gear ratio on a 4L60E?

Changing the gear ratio can improve the car’s performance, yield better engine rpm, make more efficient use of the engine’s output and ultimately improve speed – which, in the end, is exactly what you want. When adjusted with proper gear ratios and a set of the right aftermarket parts, the 4L60E can be just the transmission you’re looking for.

Can a tuner change the gear ratio of a transmission?

Luckily, some tuners, such as Sharkwerks, can alter the transmission’s gear ratios to improve acceleration and shifting frequency. There’s also the axle ratio to consider. As with the transmission, changing the axle ratio changes vehicle performance.

How does the gear ratio rpm calculator work?

This calculator does not take into consideration any drive train loss, road and weather conditions or driver skills. The calculated results are displayed; the higher the engine RPM, the greater the potential speed at the cost of fuel, heat, friction and engine longevity.

What does the gear ratio and tire size chart mean?

This gear ratio and tire diameter chart is meant to give you an approximation of ideal RPMs at highway speed (65 mph) for three situations: fuel economy, every day driving and increased towing power. This chart provides values that represent a 1:1 ratio on a manual transmission.

Which is better 3.23 or 3.73 gears?

If you plan on keeping your three speed transmission you probably going to find the gear that will give you the both of best worlds between 3.23 and 3.43. Also something to keep in mind is from what I have seen anything below a 2.73 gear does not get a lot of after market support.

What does a 4.11 gear ratio mean?

No 4:11 means for every 4.11 turns of the engine your wheels will turn one time in what ever your highiest gear is. With 4:11 you shouldn’t have any problem at 55 mph. It could be a problem depending on what your rear wheel tire diameter is.

What’s the rear gear ratio on a Chevy truck?

The stock 60 1/2 ton rear has a perfectly round cover plate and also a carrier or “pumpkin” that can be unbolted from the front of the axle housing. Apart from the 54 and earlier passenger cars, this design is unique to the truck rears and was last used on the 1/2 ton in 62. 3/4 and 1 ton trucks had a similar design (but a larger size) till 72.

What’s the gear ratio on a 60 C-10?

On my 60 C-10 with a 3.90 rear, which is probably the same as you have, I replaced the 4 speed transmission with a T-5 from an S-10 truck and it made a very enjoyable difference at highway speeds. Installing the transmission was not difficult at all.

What’s the difference between 3.55 and 3.73 Axle ratios?

Gas Mileage A numerically high axle ratio means your drive shaft makes more revolutions and therefore the engine works harder and uses more gas. According to Truck Digest, going from a 3.55 axle ratio to a 3.73 will cost you a quarter mile per gallon in the long run. This manifests itself on long hauls.

Can you compensate for poor gearing with poor torque?

That thing was pretty slow with a stock 350 engine. However you can compensate for poor gearing with a lot of torque so if you running a 600HP/TQ big block having a lower gear wont matter as much. I have put some examples below using the gear calc program to give you an idea of what kind of differences you see by changing you rear end gear.