Cart “Rough-Machined Splayed-Valve Aluminum Cylinder Head” has been added to your cart. Continue shopping “Gasket For LS1 Valve Cover Pair” has been added to your cart. Continue shopping Remove item Thumbnail image Product Price Quantity Subtotal × 4-3/4" SBC Valve Covers Spreader Bar - Chrome $9.99 4-3/4" SBC Valve Covers Spreader Bar - Chrome quantity $9.99 × Holley 300-120 LS1/LS2 Dual - Quad Intake Manifold $573.95 Holley 300-120 LS1/LS2 Dual - Quad Intake Manifold quantity $573.95 × Rough-Machined Splayed-Valve Aluminum Cylinder Head $1,667.41 Rough-Machined Splayed-Valve Aluminum Cylinder Head quantity $1,667.41 × Gasket For LS1 Valve Cover Pair $10.99 Gasket For LS1 Valve Cover Pair quantity $10.99 Coupon: Apply Sales Code Update cart Cart totals Subtotal $2,262.34 Shipping Enter your address to view shipping options. Calculate shipping Country / region Select a country / region… United States (US) State / County City: Postcode / ZIP: Update Tax $0.00 Total $2,262.34 Proceed to checkout