SLP's new 25% Underdrive Balancer - Pulley for LS1 and LS6 Corvette. The pulley incorporates a number of high-quality features you won't find on any other aftermarket unit. Among them are a pair of extra-tall belt-retention walls that eliminate the belt-slippage issues common to other balancers. Other unique design strengths include 100% steel construction (other brands use steel and aluminum), integral timing marks, and built-in puller-mounting threads. Kit includes a new balancer bolt and detailed installation instructions. Gains of up to 10 horsepower can be expected.
NOTE: Requires new serpentine belt (Dayco #5060780 or equivalent, not included).
- Extra-tall belt-retention "walls"--no more thrown belts!
- No aftermarket tensioner required
- 100% steel construction
- Lighter than the stock balancer
- Integral timing marks and puller-mounting threads
- Keyed for high-rpm or supercharged applications
- Does not cause false knock retard or erratic power-curve dips
- Includes a new balancer bolt
- SFI Approved