Add to Cart LS6 6.78 Harmonic Damper SFI ATI PERFORMANCE MSRP: Now: $474.99 Was: Harmonic Balancer - Serpentine Super Damper - 6.780 in OD - SFI 18.1 - Aluminum / Steel - Black - Internal Balance - GM LS-Series - Each ATI917289
Add to Cart Main Wiring Harness LS1 & LS6 HOLLEY MSRP: Now: $675.95 Was: EFI Wiring Harness - Main Harness - Holley HP / Dominator EFI - 24x Reluctor Wheel - LS1 / LS6 - GM LS-Series - Each HLY558-102
Add to Cart Head Gasket - GM LS1/LS6 FEL-PRO MSRP: Now: $46.99 Was: Cylinder Head Gasket - 3.945 in Bore - 0.048 in Compression Thickness - Multi-Layer Steel - GM LS-Series - Each FEL26190PT
Add to Cart LS1-LS6 Performance Intake Gasket .030in FEL-PRO MSRP: Now: $31.99 Was: Intake Manifold Gasket - 0.03 in Thick - 1.19 x 3.34 in Cathedral Port - Composite - GM LS-Series - Pair FEL1312-1
Add to Cart HP ECU & Harness LS1/LS6 NTK HOLLEY MSRP: Now: $2,633.95 Was: Engine Control Module - HP EFI - Wiring Harness - NTK Oxygen Sensor - 24x Reluctor Wheel - LS1 / LS6 - GM LS-Series - Each HLY550-602N