Answering the common buyer question: which turbo-related parts best suit a Turbo 350 (TH350) setup? This guide highlights five relevant products that help improve transmission compatibility, performance, and reliability. It targets classic car owners, hot-rodders, and enthusiasts upgrading TH350-equipped builds. Each pick is evaluated for its best-use scenario and practical limitations.
| Product | Best For | Why It Stands Out |
|---|---|---|
| 40 TOOTH SPEEDO DRIVEN GEAR Turbo 350 Turbo 400 700R4 | Speedometer-accurate upgrades | Directly improves speedometer compatibility with multiple transmissions; useful for mixed gear setups. |
| A-Premium GT3782VA Complete Turbocharger Turbo Kit | Full turbo upgrade kit | All-in-one option for converting a V8 to turbocharging with compatibility notes. |
| TH350 Kickdown Cable Delete Plug | TH350 kickdown modernization | Simple, durable aluminum block-off that removes kickdown linkage where not needed. |
| TH350 Transmission Shifter | TH350 control and ergonomics | Complete shifter with 12″ stick for improved gear selection and fitment. |
| maXpeedingrods T04E Turbo Kit | High-performance turbo upgrade | Wide-power-range kit with wastegate and oil return line for performance-focused builds. |
40 Tooth Speedo Driven Gear
Best for speedometer compatibility when using TH350 with multiple transmission types. Select this when you need accurate gearing display across TH350, Turbo 400, and 700R4 configurations. Caution: product availability may vary by vehicle model and gear ratio requirements.
A-Premium GT3782VA Turbocharger Kit
Best for a complete turbo upgrade in a single package. This kit is suitable for builders seeking a full turbo conversion pathway with compatible sizing for gasoline V8 engines paired with a TH350 drivetrain in many trucks and cars. Better for enthusiasts planning a broader turbo system rather than piecemeal parts. Caution: installation requires engine and exhaust compatibility checks and may need additional supporting components not listed in the package.
TH350 Kickdown Cable Delete Plug
Best for TH350 applications needing a direct, durable kickdown block-off. Made from 6061 aluminum for corrosion resistance and strength. It’s a straightforward plug-and-play solution to replace the factory kickdown cable configuration. Caution: this part disables kickdown functionality, which may affect certain driving modes or towing setups.
TH350 Transmission Shifter With 12″ Stick
Best for improved ergonomics and gear selection in TH350 installations. The 12″ stick length offers flexible mounting options for various vehicle interiors and linkages. Choose this if you want a clearer, more precise shifter feel. Limitation: compatibility depends on the console and linkage layout of the specific car model.
maXpeedingrods T04E Turbo Kit
Best for higher-power TH350 builds that aim for sustained performance. This kit includes a Wastegate and Oil Return Line Kit to support a more aggressive turbo setup. Choose this if you plan for up to higher horsepower ranges and want a more complete turbocharging system. Caution: ensure oiling and cooling provisions in your engine bay meet the kit’s requirements.
Buying Guide: Key Purchase Considerations
Compatibility and intent matter more than raw power numbers when upgrading a TH350 with turbo components. Consider the following:
- Application type: Street cruiser, drag car, or off-road build affects which kit is best.
- Wear and power handling: Expect upgrades to require supporting upgrades (fuel, exhaust, cooling).
- Kickdown functionality: If you value factory kickdown behavior, a delete plug should be used only if appropriate for your driving style.
- Installation scope: Full turbo kits require engine and exhaust compatibility checks and possibly added lines, seals, or brackets.
- Budget and future-proofing: An all-in-one kit reduces guesswork but may exceed a minimal upgrade budget.
- Legal and warranty considerations: Check local emissions guidelines and any vehicle warranties before installing turbo components.
Frequently Asked Questions
- Can I use a TH350 with a turbo kit on any engine?
Turbo kit compatibility depends on engine displacement, fuel system, exhaust layout, and transmission linkage. Verify fitment with your specific vehicle model.
- Is a kickdown cable delete safe for daily driving?
Deleting the kickdown may remove certain throttle-down functions. It’s best suited for builds where kickdown isn’t required, such as certain race or custom setups.
- Do I need a new shifter with a TH350 turbo upgrade?
A new or upgraded shifter can improve accuracy and ergonomics, especially when fittings or console layouts change during modifications.
- How does a speedometer driven gear help with a turbo setup?
It preserves accurate speed readings when using multiple transmissions or altered gear ratios, which is common in turbo swap projects.
- What is the role of a wastegate in a turbo kit?
The wastegate controls boost pressure, preventing over-boost and protecting engine components during acceleration.
- Are these parts legal for street use in all states?
Emissions and regulatory requirements vary by state. Verify compliance before installation for street-driven vehicles.