Supercharged Mustang GT best gear ratio?

travelers

Senior Member
Joined
Apr 6, 2007
Posts
3,028
Reaction score
79
Location
Eastern Pa
What exactly does double keying do?
The crank snout has one key way to hold the damper from turning on the snout. On some high boost setups, they recommend two key ways to make sure it doesn't brake the single key. The damper needs to have the second key way.
 

Gabe

Whippled Coyote
Joined
Aug 7, 2011
Posts
8,440
Reaction score
1,531
Location
NC
The 07-12 GT-500's came with a 3.73 rear end. The 13/14 GT-500's came with a 3.31
Story I got was the 13/14 GT-500's, to avoid the gas guzzler tax, went to the 3.31 rear gear.
The Roush cars used a 3.73 rear gear, and the... (aprx $1K) gas guzzler tax was implemented.

Factory '07-'14 GT500 rear axle ratio was 3.31 except the '08-'09 GT500KR and the Performance Pack which had the 3.73's and I think that package was only available on '11-'14 models.
 

stkjock

---- Madmin ----
Staff member
Administrator
Super Moderator
S197 Team Member
Joined
Jul 10, 2007
Posts
40,224
Reaction score
3,139
Location
Long Island NY
see if the XL can come with a .5 6th gear, save some highway RPM

also, ask if they give a cash discount, can't hurt, I always ask, 50/50 on getting some savings.
 

1 Alibi 2

If not today, when ??????
Joined
May 4, 2011
Posts
2,150
Reaction score
2,283
Location
Hackettstown, N.J.
Factory '07-'14 GT500 rear axle ratio was 3.31 except the '08-'09 GT500KR and the Performance Pack which had the 3.73's and I think that package was only available on '11-'14 models.
.
My non SVTPP 2011 had 3.55's..
 

travelers

Senior Member
Joined
Apr 6, 2007
Posts
3,028
Reaction score
79
Location
Eastern Pa
Something I was just thinking about is your Torque, You are just about on the limit of the standard T56 magnum of 700 lb. You can get one rated for I believe closer to 1000lb. It might be a something to think about.
 

JG-1

forum member
Joined
Mar 2, 2016
Posts
512
Reaction score
53
Location
Hainesport, NJ
Just for shits and giggles, I posed the same question to Evolution that I did to JPC.

Here is the quote:

11.0:1 Compression Aluminator
Camshaft Filter (4)
ARP Cam Tower Bolt Kit
Custom Camshaft Set
Heavy Duty Primary and Secondary Chain Tensioner Set
ARP Tensioner Bolt Kit
Heavy Duty Primary Timing Chain Set
Heavy Duty Secondary Timing Chain Set
Billet Secondary Tensioner Bracket
ARP Cam Phaser Bolt Kit
High Strength VCT Solenoid Set
Billet Crankshaft Sprocket
Timing Cover Gasket Set
Front Cover Seal
Valve Cover Gasket Set
Water Pump O-Ring
Oil Pan Gasket
Billet Low Profile Belt Tensioner
ATI Balancer
Balancer Bolt
Stretch Belt
Driven 5W50 Engine Oil
WIX XP Oil Filter
Magnum XL Transmission
Mcleod Racing RXT 1200HD Clutch
Slave Cylinder
Transmission Fluid (4)
MGW Magnum XL Shifter
Premium Orange Coolant
Supercharger Pulley
ID1300x Fuel Injector Set
Installation
Remote Tuning Session
$32,000.00 - Cash
 

Mustang dog

forum member
Joined
Apr 24, 2016
Posts
172
Reaction score
19
I've got 3:90's with at 28" tire (305,40,18 DR) with a 2200sl, on a built motor. The actual effective gear on with this tire is somewhere around 3:76- 3:80.( depending on which calculator you use). It seems to be a good all round set of gears for this tire. I would only change to 4:11 if I was running a 15" tire with a tall sidewall. But for how my car produces boost (higher up in the RPM) I like this setup... for now.
 

JG-1

forum member
Joined
Mar 2, 2016
Posts
512
Reaction score
53
Location
Hainesport, NJ
Well, I’ve had a change of mind. Instead of dumping another 20+k in this car, I think I’m going to sell it and put a deposit on a 2020 gt500 if I can find a dealer that doesn’t gouge the market up on it.
 

Latest posts

Support us!

Support Us - Become A Supporting Member Today!

Click Here For Details

Sponsor Links

Banner image
Back
Top