rev's and speed
Thread Starter
Instructor
Joined: Apr 2012
Posts: 243
Likes: 3
From: Sydney Australia
rev's and speed
I have seen a few calculators that you can type in the wheel size , gear ratio and get a rev reading.
Is there a graph one, where i can see in 1st gear, low to high revs then second an so forth?
Trying to sort out diff ratio.
Mine will be a street driver only. Some 70 mph but would be mostly 35 to 50. ( think that is right, around 50 to 90 kph)
I know the 700r4 has a low 1st just want to see what it would crusie at speeds. 1st to 3rd.
As a example, My car atm is a 6 speed Australian car with a ls2. I like to keep engine around 2200 to 2500 while staying at a speed, while driving around town . ( not highway, 6th brings down to 1900 at 120kph.)
Is there a graph one, where i can see in 1st gear, low to high revs then second an so forth?
Trying to sort out diff ratio.
Mine will be a street driver only. Some 70 mph but would be mostly 35 to 50. ( think that is right, around 50 to 90 kph)
I know the 700r4 has a low 1st just want to see what it would crusie at speeds. 1st to 3rd.
As a example, My car atm is a 6 speed Australian car with a ls2. I like to keep engine around 2200 to 2500 while staying at a speed, while driving around town . ( not highway, 6th brings down to 1900 at 120kph.)
Melting Slicks
Joined: Oct 2011
Posts: 2,748
Likes: 90
From: Sacramento California
C2 of Year Finalist (performance mods) 2019
2018 C2 of Year Finalist
Pro
Joined: Feb 2008
Posts: 556
Likes: 13
From: C3 Forum, Colorado
I like this one.
You can change any of the given ratios in the transmission or axle that are populated when you open the link by highlighting it and entering your own. But in order for it to be effective you need to select a different ratio, then click back to the one you just changed.
Slide the bars to select the tire size you want.
Then slide the little white box below the word "Throttle" left or right to the desired RPM and it does the calculation for you.
The only options for the transmission are 3 speed automatic or 4 speed manual. But if you know the final drive ratio of 6th gear in your transmission you can enter it in "Drive" or "4th gear" option and it will still calculate it correctly.
For example, a 700R4 in overdrive has a ratio of .71 with the torque converter locked up. You can put that ratio in the 4 speed transmission or automatic transmission with 100% torque converter efficiency and it will work.
This may sound confusing but once you get the hang of it it's really cool.
You can change any of the given ratios in the transmission or axle that are populated when you open the link by highlighting it and entering your own. But in order for it to be effective you need to select a different ratio, then click back to the one you just changed.
Slide the bars to select the tire size you want.
Then slide the little white box below the word "Throttle" left or right to the desired RPM and it does the calculation for you.
The only options for the transmission are 3 speed automatic or 4 speed manual. But if you know the final drive ratio of 6th gear in your transmission you can enter it in "Drive" or "4th gear" option and it will still calculate it correctly.
For example, a 700R4 in overdrive has a ratio of .71 with the torque converter locked up. You can put that ratio in the 4 speed transmission or automatic transmission with 100% torque converter efficiency and it will work.
This may sound confusing but once you get the hang of it it's really cool.
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
This one is I think the best one , easy and straight forward
http://www.chevellestuff.com/tools/rpm_calculator.htm
http://www.chevellestuff.com/tools/rpm_calculator.htm
Drifting
Joined: Dec 2004
Posts: 1,714
Likes: 42
From: Austin Texas
