Speedtek T56 1st to 4th Dog Engagement Gearset
Heavy-Duty Custom Transmission Gearset, with the options to fine tune the ratio's to either a Wide-Ratio or a Close-Ratio depending on requirements!
Key Features:
- 4 Forward Dog Engagement Gears
- Input Shaft Spline: 26 Spline (Optional 29 Spline Available)
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Various Input Shaft Options:
- GM/Holden GTO / SS Commodore
- Corvette C5 / C6
- Dodge Viper
- Dodge Challenger
- Cadillac CTSC
- Ford Barra 4L
- Ford Mustang
- Other options available upon request (additional costs may apply)
Design & Performance Enhancements:
- Individually removable gears for ease of maintenance
- Helical Cut Extreme Duty Design
- Heavy-duty 42mm input shaft drive & driven gears
- 8mm thick dog rings for extreme durability
- Heavy-duty chromoly shift forks
- 12-spline hub design
- Two-piece countershaft design (retains OEM 5th & 6th gears)
- Designed to suit factory mainshaft
Various Gear Ratio Options ;
(Tooth Count is listed Main Gear Count & Counter Gear Count)
Various first gear options available depending on requirements for various applications.
1️⃣ 2.01 (20 / 11) 1️⃣ 2.22 (22 / 11)
1️⃣ 2.49 (27 / 12) 1️⃣ 2.68 (29 / 12) 1️⃣ 2.96 (32 / 12)
2️⃣ 1.73 (25 / 16) or 2️⃣ 1.94 (28 / 16)
3️⃣ 1.28 (24 / 19) or 3️⃣ 1.40 (21 / 19)
4️⃣ 1:1 (18/ 20)
5️⃣ OEM
6️⃣ OEM
🔄 Reverse: OEM
Availability & Production Timeline:
✅ Prototype Completed – Mass production begins in 2024
✅ First batch expected by Q1 2025 (Q2 2025 worst case scenario)
We are actively developing variations for different models to ensure maximum compatibility—such as the LS-powered Commodore and the Barra 4L-powered Falcon.
Additional Upgrades:
- Race Spec Short Shifter
- Billet Front Transmission Plate (Compatible with Tilton 8000 Series Hydraulic Release Bearing)
- Oil Spray Bar Option for 1st to 4th Gears
- Detent Kit for additional Shift Feel
⚠️ Pre-Orders are strictly non-refundable. We are working as fast as possible to deliver a top-tier product.