* Overdrive: The 700R4's overdrive gear (typically a 0.70:1 ratio) significantly improves fuel economy and high-speed cruising on the road between race events, reducing engine strain at higher speeds. While not directly impacting track performance, it's a huge advantage for many racers.
* Strength (with modifications): While a stock Turbo 350 can be strong, the 700R4, especially with aftermarket upgrades, is generally capable of handling more torque and horsepower. This is crucial for higher-performance racing applications.
* More gears: The extra gear offers more flexibility in gearing for different race tracks and conditions.
* Shifting: While both can be modified for quicker shifting, the 700R4's design lends itself better to aftermarket upgrades for faster and more precise shifts.
However, it's not a universal "better" without qualification:
* Weight: The 700R4 is heavier than the Turbo 350. In some very weight-sensitive racing classes, this could be a disadvantage.
* Cost: Building a race-ready 700R4 is usually more expensive than a similar build of a Turbo 350, due to the complexity and availability of parts.
* Specific application: The optimal choice depends heavily on the type of racing. In some drag racing applications, where simplicity and extreme durability are paramount, a heavily modified Turbo 350 might still be preferred.
In summary: For most racing applications, the 700R4's advantages in overdrive, potential strength, and gearing flexibility outweigh the added weight and cost. But a thorough analysis of the specific racing discipline and budget is critical to making the best choice.
