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Tremec T56 Magnum XL 6-speed manual, GM input shaft for: 86, Z4, S197, S550 LS swap

Vorshlag has teamed up with Tremec to get the right transmission built for the BRZ / FR-S / 86 LS V8 swap as well as our BMW Z4 LS swap and now the S550 Mustang LS swap as well. 

NOTE: The 'XL' version of the T56 Magnum is 5.5" longer than the regular T56 Magnum. This added length is required for some swap due to the length from the firewall to factory shifter hole, like on the 86 chassis, Mustang S197 and S550, or the BMW Z4

The T56 Magnum XL checks all the right boxes for strength, durability, and fit within this 86 or BMW Z4 chassis.  The T56 Magnum XL can withstand up to 700 lb-ft of torque which makes it a perfect candidate for a fully built track car, but also offers offers smooth shifts perfect for your street sleeper.  This Magnum XL transmission comes modified to work with a GM LS engine (a different input shaft is added) and is offered in two different gear ratios. 

The T56 Magnum XL gives the perfect length to align with the stock shifter location, making it work well for for the the BRZ / FR-S chassis or BMW Z4 and an accompanying Vorshlag LS V8 swap kit. This makes for very limited trimming of the shifter opening in the transmission tunnel. This transmission includes a Tremec shifter base (as shown in these pictures) but no shift handle or knob.

Shipping costs? Freight Shipping to a business address in the 48 contiguous United States shown in the options and explained in the notes below. Call Vorshlag for more details.

The T56 Magnum XL comes in three different gearing options.  Choose the one that you feel is a appropriate for your build.

Tremec Magnum Gearing Options
 1st      2nd       3rd       4th      5th       6th

2.66     1.78     1.30     1.00     0.80     0.63          (Close ratio)
2.97     2.10     1.46     1.00     0.80     0.63          (Hybrid ratio)

2.97     2.10     1.46     1.00     0.74     0.50          (Wide ratio)

We pick the "Wide" ratio box for street cars, as 5th and 6th gears allow for highway cruising with low RPMs and good gas mileage. The "Close" ratio box is better for dedicated track cars, as the 2nd and 3rd gear ratios are more suitable for use on a road course. The "Hybrid" ratio is ideal for dual purpose cars that need the low gears for starting from a stop but would like the shorter overdrives for track use.


1. This T56 Magnum XL for GM use is built to order and takes 2-4 weeks to be built and shipped.

2. The proper bellhousing for the LS/86 or BMW Z4 swaps is sold separately and shown in this same web store section.

3. This transmission uses Dexron III ATF. We recommend the Motul version found on our site here: Motul DEXRON III Automatic Transmission Fluid - 1 Liter

4. This shipment is heavy enough that it must ship via freight truck - which adds $200.00 to a business with fork lift service or $300.00 to residential address in the lower 48 United States (lift gate service). That prices is shown in the options. Call for more details or other shipping options.