Items You Need
LS1, LS2 w/3.898 in. Min. Bore [240 cc Rectangle Ports]
ProMaxx 3342 XXTREME Assembled Cylinder Heads Features:
- High-flow as-cast port design
- Ultra-smooth 356-T6 aluminum casting
- 21-4N stainless 1 piece swirl polished back cut valves
- 5-angle valve job
- 11-Degree valve angle
- Hardened steel valve seats
- OEM LS3 valve spacing
- Manganese bronze diamond honed guides
- Viton valve seals
- Built-in raised valve cover rail
- .750 in. deck thickness
- Billet LS3 OEM rocker stand
- For use with standard or 6 bolt pattern
- Large spring pockets
ProMaxx 3342 XXTREME Assembled Cylinder Heads Notes:
- Requires 3.898 in. minimum engine cylinder bore
- Requires LS3 intake rocker arms
- Included valve springs with titanium retainers specs:
- Closed: 155 lbs. @ 1.800 in.
- Open: 425 lbs. @ 1.150 in.
Specifications:
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.