Superchargers and Rear Gears
#1
Bullitt Member
Thread Starter
Superchargers and Rear Gears
As I continue to investigate which car I'm going to buy and what upgrades I'm planning I've come to the conclusion that a super charger is actually a possibility for a me. I've heard some people say if you know you are going to add a super charger on the new cars to stick with the standard rear end gear and don't upgrade to 3.73's because of MT82 gearing. My original plan was a 2014 with Track Pack but if this is true then I might just stick with the standard car. Then again the Track Pack still has other goodies that make it worth while and I could always "downgrade" my gears.
Any thoughts?
The car will be driven daily during nice weather.
Any thoughts?
The car will be driven daily during nice weather.
#2
Bullitt Member
Join Date: May 20, 2012
Location: Slidell La.
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I just added a Roush TVS and my 3.73's are manageable with the blower i like the acceleration they give for a DD. Only hang up is the gear whine and some guys say they get it from the factory ,ill most likely put 3.55's in mine eventually the gear whine is starting to become annoying. I originally had 3.31's and if i knew at the time i was going to get a blower i would have just left them in. If you stay NA then 3.73's are the way to go and hope you dont get any whine
#3
Shelby GT350 Member
I think 3.55's would be perfect for my car... and with a supercharger I can't imagine wanting 3.73's. 5th gear tops out at low 140's or so and 6th is a real overdrive. 3.55's give a bit longer legs with each gear. I wish they offered 3.55's as an option with the track pack
#4
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I think 3.55's would be perfect for my car... and with a supercharger I can't imagine wanting 3.73's. 5th gear tops out at low 140's or so and 6th is a real overdrive. 3.55's give a bit longer legs with each gear. I wish they offered 3.55's as an option with the track pack
#5
Bullitt Member
Thread Starter
Well my track pack car is arriving today. If I get around to adding a supercharger I'll make sure I'm prepared to drop back to 3.55's or 3.31's at the same time. I'll drive it with the 3.73's for a bit first of course.
Thanks guys.
Thanks guys.
#6
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#7
If you check the specs on the GT500, you will see that it ships with 3:31 gears as well. If you go with a blower, might be a better option to stick with that gearing to start with.
#8
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#9
Shelby GT350 Member
1st and 2nd gear with 3.73's feels FAST
#10
Bullitt Member
Thread Starter
#11
Cobra Member
I have a supercharged GT and a GT500. The GT500 trans gearing is totally different than the GTs, most GT500 owners want to go up to 3:73s because 3:31s make the gears soooo long, 65mph in 1st gear! My Roush has 3:73s in it and I like them, but they are definitely borderline excessive in some situations; like having to shift into 5th in the 1320 . But in the GT500 with 3:73s I can cross the line (barely) and stay in 3rd.
#12
Cobra Member
I just added a Roush TVS and my 3.73's are manageable with the blower i like the acceleration they give for a DD. Only hang up is the gear whine and some guys say they get it from the factory ,ill most likely put 3.55's in mine eventually the gear whine is starting to become annoying. I originally had 3.31's and if i knew at the time i was going to get a blower i would have just left them in. If you stay NA then 3.73's are the way to go and hope you dont get any whine
#13
As I continue to investigate which car I'm going to buy and what upgrades I'm planning I've come to the conclusion that a super charger is actually a possibility for a me. I've heard some people say if you know you are going to add a super charger on the new cars to stick with the standard rear end gear and don't upgrade to 3.73's because of MT82 gearing. My original plan was a 2014 with Track Pack but if this is true then I might just stick with the standard car. Then again the Track Pack still has other goodies that make it worth while and I could always "downgrade" my gears.
Any thoughts?
The car will be driven daily during nice weather.
Any thoughts?
The car will be driven daily during nice weather.
#14
For the street a blower with 3.73s is fun. If you plan on taking it to the strip though you'll basically be shifting immediately after launch. If its a strip car 3.31 would be the best choice.
#15
Roush Forum Stalker
#17
Legacy TMS Member
Gear whine is just a bad install. I know at least 20 people in my Mustang club with 3:73s and 4:10s and not a single one whines, if it had whine our mechanic took it apart and made the necessary adjustments that fixed it every time. All these cars are different as well; stock shocks and springs, lowered, 1-piece DS, etc.
#20
Useful tool I used this to spec out my gear ratio for my new tremec magnum xl being installed today! Going with 3:90's in the rear which is the equivalent of 3:31s in an mt-82!
http://xse.com/leres/bin/gearratio?t...le=35&wheel=19
http://xse.com/leres/bin/gearratio?t...le=35&wheel=19
Last edited by kona stang10; 10/22/13 at 12:32 PM.