Here's why:
* High RPMs at Highway Speeds: A 4.11 gear ratio will result in significantly higher engine RPMs at highway speeds (e.g., 65-75 mph). This leads to:
* Reduced fuel economy: Higher RPMs mean the engine is working harder and consuming more fuel.
* Increased engine wear: Constant high RPM operation increases stress on engine components, potentially leading to shorter lifespan.
* Increased noise: Higher RPMs often translate to more engine noise.
* Poor acceleration from a standstill (depending on tire size): While 4.11 gears excel at low-speed acceleration and towing, with a stock 350's relatively low torque output, the benefits might be minimal, especially if paired with larger-diameter tires. The engine may struggle to reach the optimal torque range quickly.
A 4.11 gear ratio is better suited for:
* Off-roading or towing heavy loads: The lower gears provide more pulling power at low speeds.
* Modified engines with significantly increased torque: If you've significantly modified your 350 with performance upgrades (e.g., larger camshaft, higher compression ratio, forced induction), the increased torque might better utilize the 4.11 ratio.
* Smaller diameter tires: Smaller tires will effectively increase the gear ratio, making a 4.11 even less suitable for a stock engine.
For a stock Chevy 350, a gear ratio in the 2.73 to 3.73 range would generally be more appropriate, depending on your typical driving conditions and tire size. A 3.08 or 3.42 would be a good compromise for a balance between highway driving and reasonable acceleration.
Before changing your gears, consider your driving habits and intended use for the vehicle. Consult a gear ratio calculator online, inputting your tire size and desired RPM at highway speed, to help determine the best gear ratio for your specific setup.
