Fox T-Bird/Cougar Forums  

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Gone is the Tremec 5-speed transmission and stepping up to the plate is a new Ford/Getrag MT82 6-speed close ratio manual transmission.  Gear ratios are: 3.66, 2.43, 1.69, 1.32, 1.00 and 0.65 for sixth.  Final drive ratio for manual cars is 3.31:1 but optional ratios will be available. A 6R80 6-speed automatic can also be ordered with: 4.17, 2.34, 1.52, 1.14, .87 and .69 gear ratios.  Automatic equipped vehicles get a 3.15:1 rear gear.

An optional Brembo brake package is also available which will include 14” front rotors and 4-piston Brembo calipers borrowed from the GT-500.

Nestled between the strut towers is a new 5.0L (4,952cc / 302 ci) aluminum block capped by new compact 4-valve aluminum heads with Twin Independent-Variable Cam Timing. Compression is a lofty 11:1 which provides 405 horsepower on regular pump gas and 412 horsepower on premium. On premium or pump gas, however, the 2011 Mustang GT should still get at least a 25 MPG EPA rating.

The new 5.0L engine is an all aluminum block, ribbed for strength and durability. It has been tested well beyond the published horsepower figures. Nodular iron main bearing caps with 4 bolts and cross bolts help to keep the fully counterweighted forged steel crank in place. High strength forged powdered metal rods with floating pins keep the hypereutectic pistons in place. Oil squirters spray oil on the underside of the piston crown keeping it cool, and allow lots of ignition timing to be added.

Another great addition are specially tuned headers. According Mike Harrison, 5.0L Chief Engineer, “Every Mustang owner throws away the header. So we’re going to give them the headers they always wanted without needing buy aftermarket headers.” The headers provide significant torque at low speed because the pulses from the exhaust are separated from each other so there is no interference between exhaust events to interrupt the airflow. Only long tube headers will out perform the factory pieces.

Another great addition are specially tuned headers. According Mike Harrison, 5.0L Chief Engineer, “Every Mustang owner throws away the header. So we’re going to give them the headers they always wanted without needing buy aftermarket headers.”

Are they stainless?