Boost your street cruiser's horsepower with our new "X2" Aluminum Cylinder Head. Expertly crafted for 289/302/351 Windsor engines, it promises seamless performance and a hassle-free upgrade with premium components for a thrilling drive.
NEW AND IMPROVED "X2" CYLINDER HEAD IS MANUFACTURED FROM ALL-NEW TOOLING, MACHINED, AND ASSEMBLED WITH PREMIUM HARDWARE. THIS PROVIDES A FAST, EASY WAY TO BOLT ON SIGNIFICANT HORSEPOWER TO YOUR STREET CRUISER PACKAGE!
- For use on 289/302/351 Windsor-style engines
- High quality original equipment style 356-T6 aluminum castings, precision machined, and assembled with premium components
- Includes Ford Performance M-6507-J302 intake valves, M-6505-G302 exhaust valves, and PAC® 1219X Ovate Beehive valve springs
- Feature 10-degree locks, steel valve spring retainers and stock valve seals
- High temperature exhaust valve seats
- Includes bronze guides
- Features wider valve cover gasket sealing rail to prevent leaks
- Machined for gasket seat spark plug
- Compatible with all Ford Performance roller camshafts and aftermarket hydraulic roller camshafts up to .600" lift
- Work with many aftermarket intake manifolds, headers, and valve train components
- Compatible with bolt down rockers 1.6-1.7 ratio, always check rocker arm clearance to valve springs with production rocker arms
- Depending on lifter preload, Ford Performance Rocker Shim Kits M-6529-A302 or M-6529-B302 may be required
- Each aluminum head weighs approximately 25 lbs. lighter than each production cast iron head
- Each head is leak tested prior to assembly
Specifications:
- Combustion chamber volume 64cc
- Intake port volume 188cc
- Exhaust port volume 63cc
- Intake flows approximately 230 cfm at .600" lift (at 28" of H20)
- Exhaust flows approximately 160 cfm at .600" lift (at 28" of H20)
- Premium stainless steel valves - 1.94" Intake and 1.54" exhaust.
- Closed spring pressure is 145# @ 1.800"
- Open spring pressure is 358# @ 1.175"
