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The CNC Ported PB 1200 Series takes the big block world to the next plateau! This head comes equipped with several features that include: 12° valve angle; raised, oval-shaped intake ports designed to achieve a delicate balance between horsepower and torque; and precision contoured shallow chambers with outstanding wet flow characteristics. Assemblies have 55 deg valve seats and 1.645 OD triple valve springs for .850 max lift.
The new Man Eater (PB 1202) takes the PB 1200 Series a step further. This head features 497 cc oval-shaped intake ports that are raised an additional .125 and utilizes a 2.480 intake valve. The PB 1200 Series is offered 100% CNC ported to ensure accuracy.
The standard features are A-356 virgin aluminum alloy, phosphorous bronze valve guides, and copper valve seats. These heads are machined to accept 1.740 i.d. valve spring cups and can be used in conjunction with the Brodix PM series of manifolds. We also sell other packages and versions of this head. Please contact us for more information.
For a flow chart & valve sizes click on Technical Information below. |
On all complete assembly packages, it is very possible that the valve springs are not correct for your camshaft. All valve springs should be checked for compatibility to your camshaft. Severe wear of valve train components and severe engine damage could result from failure to do this. Check spring requirements before heads are installed on the engine. If in doubt please contact your camshaft manufacturer or USA Performance Parts. We do carry optional springs for all of your needs.
