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Bowler Performance GM LS T-56 Magnum 6-Speed Transmission Packages 1511012
Part Number: BTM-1511012
Bowler Performance GM LS T-56 Magnum 6-Speed Transmission Packages
Manual Transmission, GM LS T-56 Magnum 6-Speed, 1.125 in. - 26-spline Input, Aluminum Case, Slip-on Yoke, Bellhousing, Clutch, Transmission Mount, Kit
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Estimated Ship Date: Dec 9, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
1511012
Part Type:
Product Line:
Summit Racing Part Number:
BTM-1511012
Item Number:
7424993
Number of Gears:
6
Input Shaft Diameter:
1.125 in.
Input Spline Quantity:
26
Output Shaft Spline Quantity:
31
Output Shaft Spline Diameter (in.):
1.360 in.
Bellhousing Included:
Yes
Yoke Included:
Yes
Yoke Style:
Slip-on
Shifter Included:
No
First Gear Ratio:
2.97:1
Second Gear Ratio:
2.10:1
Third Gear Ratio:
1.46:1
Fourth Gear Ratio:
1.00:1
Fifth Gear Ratio:
0.74:1
Sixth Gear Ratio:
0.50:1
Case Material:
Aluminum
Remanufactured:
No
Quantity:
Sold as a kit.
Notes:
Requires a shifter with 0.890 in. center to center 3/8 in. diameter mounting holes.
Special Attention:
Includes transmission, bellhousing, clutch, hardware, hydraulic throwout bearing, fluid, pigtails, yoke and transmission mount.
Bowler Performance GM LS T-56 Magnum 6-Speed Transmission Packages
Bowler Performance GM LS T-56 Magnum 6-speed transmission packages are designed, tested, and built for the aftermarket. The Magnum offers a "no compromise solution" for your hot rod project, and is rated to handle tire blistering torque. Weighing in at 135 lbs., the T-56 features a single rail shifter design, 3-piece synchronizer assemblies, and three shift lever locations. Choose the Magnum model with the gear ratios you prefer.
Packages feature:
* T-56 Magnum 6-speed transmission
* LS aluminum bellhousing
* OE LS throwout bearing/hydraulic slave with -4AN inlet and remote bleeder
* Flywheel, clutch, bolts
* Billet 31-Spline 1350 Series slip yoke
* Dial indicator plate for concentric bellhousing alignment
* All-in-One harness with reverse lock-out control module
* Energy Suspension mount
* 4 qts. of Royal Purple Synchromax fluid
* 12-month warranty
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Some parts are not legal for use in California or other states with similar laws / regulations
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