What do different rear axle ratios mean?
What do different rear axle ratios mean?
It’s a ratio that represents the number of revolutions the driveshaft must make to spin the axle one full turn. The higher the ratio, the higher the performance. The lower the ratio, the higher the fuel economy.
How do I know what gear ratio my rear differential is?
Turn the wheel TWO revolutions and count the number of driveshaft turns. The number of driveshaft rotations will help you determine your rear axle ratio. For example, if it turned 3 and a half times, it’s a 3.50:1 ratio. If it turned 4 and a quarter times, it’s a 4.25:1 ratio.
What was the rear axle ratio for a 1967 Corvette?
Note: All 1965-67 Corvette rear axles were manufactured at Warren and are suffixed “W”. Listed 1967 “AQ” and “AR” codes & ratios may only have been used early in the 1967 model-year, or not at all.
What’s the gear ratio for a 1969 Corvette?
This is the prime example of how an overdrive transmission change would benefit: 1969 Corvette with an original Muncie M20 that has a 2.52 first gear ratio with a 3.36 rear axle gear ratio. Our combined first gear ratio would be [3.36 x 2.52 = 8.46], not too bad for a 427 cubic inch engine with plenty of low rpm torque.
What should the rear axle ratio be on a Chevy?
That 10.98 combined gear ratio will make even a smog motor small block Chevy feel good. If you went the other way and changed the rear axle ratio, the engine would scream—4000 rpm at 75 mph with a 4.11 rear gear axle ratio, adding extra wear to the engine and to your mental state.
What was the rear axle gear ratio in 1982?
It was common to find 3.08 and lower rear axle gear ratios in 1982 and older vehicles. 1984 Corvette Crossfires took full advantage of this technology with 3.07-3.31 rear axle gear ratios and an engine that ran out of power at 4000 rpm due to the restrictive intake manifold.