8mm HTD Pulley - 60T x 3.500in

The 8mm HTD Pulley - 60T x 3.500in from Blower Drive Service is a precision-engineered timing belt pulley designed for serious automotive builders and engine modification specialists. HTD (High Torque Drive) pulleys are the backbone of synchronized accessory drive systems, transferring power reliably from your crankshaft or supercharger to alternators, water pumps, and forced induction units. Whether you're building a street engine, a competition vehicle, or upgrading your factory accessory serpentine setup, this 60-tooth pulley offers the belt engagement and load capacity required for demanding driving conditions.

The 8mm HTD profile delivers superior tooth grip compared to V-belt or serpentine alternatives, eliminating slip under high RPM or boost conditions. At 60 teeth with a 3.500-inch outer diameter, this pulley provides a direct gear ratio suitable for most small-block and mid-size engine platforms, ensuring your accessories spin at the correct velocity for optimal cooling and charging. The HTD design uses trapezoidal teeth that engage the belt more aggressively, distributing torque evenly and reducing heat generation—critical for supercharged or turbocharged applications where accessory demand spikes dramatically. Blower Drive Service is the industry standard for OEM-quality timing components, and this pulley meets their exacting tolerances for runout and tooth geometry.

This pulley is ideal for builders upgrading to aftermarket accessory drive systems, custom serpentine setups, or supercharger installations on LS, small-block Chevy, Ford, or Mopar platforms. Installation pairs it with matching 8mm HTD belts and complementary pulleys on your alternator, water pump, and power steering pump to create a balanced, efficient drive train. Before ordering, verify your existing belt width (typically 3/8 inch or 1/2 inch) and confirm tooth count compatibility with your other driven accessories—mismatched ratios will cause premature wear and belt slippage. The 2.72 lb weight makes integration straightforward on any front-engine, front-drive-accessory layout.