technical gear question
Intermediate
Joined: Feb 2002
Posts: 35
Likes: 0
From: Sacramento Ca
Re: technical gear question (james holley)
most trans drives are 1:1 with out over drive.
I think in the 6 speed 4th gear is 1:1
with a 1/2" smaller tire Dia. it should be as if you went to a 2.54 rear gear
maybe this will help
RPM= MPH X gear ratio X Trans drive ratio X 336 divided by tire Diameter
gear ratio = RPM X tire Dia. / trans ratio / MPH / 336
MPH = RPM X tire Dia. / trans ratio / gear ratio / 336
and so on
I think in the 6 speed 4th gear is 1:1
with a 1/2" smaller tire Dia. it should be as if you went to a 2.54 rear gear
maybe this will help
RPM= MPH X gear ratio X Trans drive ratio X 336 divided by tire Diameter
gear ratio = RPM X tire Dia. / trans ratio / MPH / 336
MPH = RPM X tire Dia. / trans ratio / gear ratio / 336
and so on
Burning Brakes
Joined: Apr 2001
Posts: 799
Likes: 1
From: Fremont CA
Re: technical gear question (james holley)
Here's a fun program that will let you play with various tire sizes, gear ratios, etc.
http://www.vettextc.net/gear_program.htm
http://www.vettextc.net/gear_program.htm
Burning Brakes
Joined: Aug 2000
Posts: 984
Likes: 1
From: Cincinnati OH
Re: technical gear question (james holley)
I think I see what you're asking, so I'll give it a shot...
You're using 16" wheels, correct? If so, switching from 255/50 tires to 245/45 tires would be the same as running the the original 255/50's with a 2.73 axle, not all that much of a difference.
You're using 16" wheels, correct? If so, switching from 255/50 tires to 245/45 tires would be the same as running the the original 255/50's with a 2.73 axle, not all that much of a difference.
Intermediate
Joined: Feb 2002
Posts: 35
Likes: 0
From: Sacramento Ca
Re: technical gear question (james holley)
Sorry for the mistake
i got in to a hurry, (wife nagging me to turn out the lights)
1/2" smaller tire would be like a 2.64
1" smaller tire would be like a 2.70
i got in to a hurry, (wife nagging me to turn out the lights)
1/2" smaller tire would be like a 2.64
1" smaller tire would be like a 2.70
