Gear change in my 94 LT1
11-26-2017, 09:33 AM
#1
Advanced
Thread Starter
Gear change in my 94 LT1
I am looking for input/information on changing the gears in my 94
six speed. Car is stock with a Magnaflow Cat Back exhaust. I believe it has 3:23's stock? I was researching on line and was thinking of going with US Strange gear set and going to 3.54's. Any input would be appreciated. I am not racing the car. Just "spirited" street/on ramp driving. Also, what do I need to do for the speedometer to calibrate for the new gears? Thank you for the help/direction.
six speed. Car is stock with a Magnaflow Cat Back exhaust. I believe it has 3:23's stock? I was researching on line and was thinking of going with US Strange gear set and going to 3.54's. Any input would be appreciated. I am not racing the car. Just "spirited" street/on ramp driving. Also, what do I need to do for the speedometer to calibrate for the new gears? Thank you for the help/direction.
11-26-2017, 09:44 AM
#2
I am looking for input/information on changing the gears in my 94
six speed. Car is stock with a Magnaflow Cat Back exhaust. I believe it has 3:23's stock? I was researching on line and was thinking of going with US Strange gear set and going to 3.54's. Any input would be appreciated. I am not racing the car. Just "spirited" street/on ramp driving. Also, what do I need to do for the speedometer to calibrate for the new gears? Thank you for the help/direction.
six speed. Car is stock with a Magnaflow Cat Back exhaust. I believe it has 3:23's stock? I was researching on line and was thinking of going with US Strange gear set and going to 3.54's. Any input would be appreciated. I am not racing the car. Just "spirited" street/on ramp driving. Also, what do I need to do for the speedometer to calibrate for the new gears? Thank you for the help/direction.
11-26-2017, 12:54 PM
#4
Advanced
Thread Starter
WVZR-1 you are correct. Stock is 3.45's. Being that the stock gears are 3.45's I would consider 3.73's. I don't want to go too low and ruin it as a driver. Anyone done 3.73's and how do they act? Also would be interested in what it will be spinning in 6th gear on the freeway with the 3.73's. Thank you again for the input. Love this Forum!
11-26-2017, 01:05 PM
#5
Drifting
Go to 4.10's or leave it alone.With 4.10's you will be shifting a lot (unless you just use 1st,3rd,5th 90% of the time like I did).6th gear is actually usable with 4.10's.I had to be running 80 to use it with 3.45's.
11-26-2017, 05:07 PM
#6
Le Mans Master
Speedometer is a reprogramming PCM. Gear change somewhat depends on where you drive. If highway speeds are below 75 3.73 -4.10 is okay highway speeds 75+ maybe not. There are calculators to help you decide on a ratio. Michigan has raised speed limits to 75mph so of course traffic can travel near 90mph. I'm a little over geared with A4 3.73 for 85-90. I don't do a lot of highway driving now, if I did I would look for 3.23-3.45.
11-26-2017, 05:54 PM
#7
Instructor
Speedometer is a reprogramming PCM. Gear change somewhat depends on where you drive. If highway speeds are below 75 3.73 -4.10 is okay highway speeds 75+ maybe not. There are calculators to help you decide on a ratio. Michigan has raised speed limits to 75mph so of course traffic can travel near 90mph. I'm a little over geared with A4 3.73 for 85-90. I don't do a lot of highway driving now, if I did I would look for 3.23-3.45.
11-26-2017, 05:56 PM
#8
Instructor
11-26-2017, 07:04 PM
#9
Race Director
M6 with 4.10's @ 70 mph = 1800 rpms.
Last edited by STL94LT1; 11-26-2017 at 07:06 PM.
