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M-6049-Z304A Performance Head Assembly*
- Heads cast with high-flow ports
- Requires competition valve job and bowl blending
- Assembled for use on the M-6007-C347 and other 302/351W crate motors using hydraulic camshafts
- Premium stainless steel 2.02" intake and 1.60" exhaust valves
- M-6513-A351 valve springs with steel retainers and machined 7-degree valve locks*
- Steel alloy intake and exhaust valve seats installed (no valve job)
- Manganese-bronze valve guides installed with semi-finished ID 63cc CNC’d combustion chamber
- Cast from prime A356 T6 aluminum
- Intake port volume as cast 204cc
- Exhaust port volume as cast 85cc
- Bare head weighs 27 lbs. before assembly
- Laser cut guide plates included 20 degree inline valve head
- Accepts both tapered seat and gasket style 14mm spark plugs (Motorcraft AGSP-32-PP, Autolite 3924, 3925)
- This cylinder head was designed using Solid Modeling Technology
- Requires screw-in rocker studs and roller rockers (not included)
- Guide plates for 5/16" pushrods and 7/16" rocker studs included
- Compatible with the M-6564-K351 roller rocker arms
- Uses M-6505-A304 exhaust valve and M-6507-A304 intake valve
- Raised exhaust port exit*
* Fits 5.0L/5.8L Windsor engines.
* Most hydraulic cams can be used with these springs.
* Custom headers may be required.
* Check piston to valve clearance including radial valve clearance before installing these cylinder heads on your engine.
* Cork valve cover gasket recommended.
* Not for use on pollution-controlled vehicles.
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