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2004-06 GTO NEW Magnum-T56 6-Speed Transmission ONLY, For LSX Engines ONLY

2004-06 GTO NEW Magnum-T56 6-Speed Transmission ONLY, For LSX Engines ONLY

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Price: $3,395.00

Product Description:

04-06 NEW Magnum 6-Speed Transmission ONLY, For LSX Engines- BELLHOUSING NOT INCLUDED!

NOW AVAILABLE Magnum T56 6-speed transmission available that are direct bolt in for 04-06 GTO'S with an LSX engine or LSX swap.

Direct fit in 2004-06 GTO

  • Available in two ratio options: 2.66/1.78/1.30/1.00/.80/.62 Ratios OR 2.97/2.10/1.46/1.00/.80/.63 Ratios
  • 26T Input Shaft / 31T Output Shaft
  • Chevy VSS Sender (no speedo re-cal)
  • 700 lb. ft Torque Capacity

Consider upgrading to the Hawks Short Throw Shifter, Save $40.00 and we will pre-install it before it leaves.

Features include:

  • CNC aluminum base plate & anodized black
  • High strength springs to help shifts from 2nd to 3rd
  • Stainless steel gear stops to prevent damaging your transmission
  • 1045 carbon steel & nickle plated gear selector
  • Accepts OEM or aftermarket M16x1.5 shift knobs (we sell a wide variety of billet shift knobs)
  • Direct bolt-in installation with instructions
  • Offset shift lever closer to the driver
  • Made & assembled in the USA!!!

Require change of driveshaft slip yoke. OEM is 27-spline. This is NOT included unless you select it in options.


Features of the 1330 Slip Yoke:

  • 31 Spline x 1.390" Diameter
  • Seal Diameter 1.688"
  • Fits Ford C6, Magnum T56/Magnum F/Magnum XL

The long-awaited and highly-anticipated F-car-specific version of TREMEC’s popular Magnum 6-speed has finally arrived!  Designed to replace T-56 transmissions in 04-06 GTO, the Magnum-T56 leverages TREMEC’s pervasive TR-6060/Magnum architecture in order to provide fourth-gen enthusiasts significantly improved performance and relief from a shrinking pool of quality T-56 replacement parts.

Inside, the Magnum benefits from the same durable components found in many of today’s hardest hitting OEM muscle & sports cars.  Over the T-56, the Magnum boast increased face-width on all gears, a robust combination of double and triple cone synchronizers, enhanced webbing in the main case, provisions for a cooler circuit and more!  TREMEC also took the opportunity to upgrade the shifter to an isolator type unit, like that found on its Magnum XL.  The shifter reduces in-cabin noise and vibrations while at the same time providing the precise and communicative shift feel that all Magnums are known for.  And like all TREMEC aftermarket transmissions, the Magnum is made from 100% brand-new OEM-quality content.

Magnum Close Ratio 6-Speed for GM GTO 04-06, 700ft-lb constant load rated, unmodified, 26-spline input shaft, 4616 chromoly gears and shafts, one-piece counter shaft, triple cone synchros,

1st 2.66, 2nd 1.78, 3rd 1.30, 4th 1:1, 5th .80 and 6th .63 

1st 2.97, 2nd 2.10, 3rd 1.46, 4th 1.00, 5th .80 and 6th .63

Close Ratio version for high performance street and road racing
700 lb-ft. of torque capacity
Reasonably light at 135 lbs. dry
Multiple shifter locations & dual speedo pickups for unmatched versatility
Choice of two different gear ratio sets with unique double overdrive ratios
Incredibly short, extremely low-effort shift throws, with crisp, precise engagement
Modern OE supercar technology for the ultimate pro-tourers, road-racers, and more.

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