AFD 3V FORD 351C 393 408 Cleveland Boss AFD Alloy Cylinder Heads SP4V/3V PAIR


or 4 payments of $412.50 with Info

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This sale is for a PAIR of BARE Cylinder Heads.

They are ready to assemble - Seats are cut and hand blended. 

Have confidence and pride these are a quality hand finished items right here in Melbourne Australia, hand blended bowls and hand finished. Just WOW!

Exceptional Quality for a Wow factor of a price!

These Cylinder heads flow and work like you wont believe. Best Bang for your Buck! 

Dont waste your time or money on rebuilding old Cast Iron units - upgrade now. Forget the headaches and crack testing woes.

We do offer Complete assemblies, valves, springs, retainers to suit your application, see our other listings for various assemblies to suit your camshaft. We have 4 Stages - 1 through to 4. Message us for more details or see our other listings.  

Intake Manifolds that bolt up to the SP4V: (this is a raised port 3V configuration - majority of the 3V intake manifolds will satisfactorily bolt up. )

TFC 4V, Parker Funnel web, CHI, SCM Dual plane

Exhust Headers - these have 2 bolt locations on every cylinder head - standard and raised. 

Your existing headers/Extractors will fit 2V and 4V. 

Just message us for further details. 

Airflow Dynamics Australia is in Melbourne, Australia.

With over 30 years port design / cylinder head experience, AFD delivers the results.AFD have worked with some of the industries leading engine builders, designing race winning cylinder head and manifold packages in all areas of Motorsport, from V8 Super Car, ARC ,Drag Boats, Speedway, Formula Ford, Circuit Racing, Drag Racing. 


Model: SP4V

Material:                                         356 Alloy, T6 

Chamber Volume:                         55cc,  58cc, 64cc, 68cc, 72cc, 76cc options

Complete Assembly options available in all chamber sizes

Intake Runner Volume:                  225CC

Intake Port location                        raised .125” 3V design 

Minimum Cross Section:               2.53 square inches MCSA 

Exhaust Runner Volume:             125cc - high velocity

Exhaust Port Location                 Raised .080” (near stock location) 

Valve sizes                                  Intake 2.190” (45 degree seat, custom 5 angles)

                                                     Exhaust 1.650” (45 degree seat ) 

Valve Guide Angles:                   Canted Valve angles
                                                    Intake 10 x 4 degrees
                                                    Exhaust: 9.5 x 3.0 degrees 

Valve Guides:                             Manganese Bronze .502” x 11/32” stems  

Valve Seat Inserts:                     Intake: 2.250” x 1.880 x 3/8 (Durabond 7000)
                                                    Exhaust: 1.680” x 1.430” x 3/8 

Spark Plugs:                               relocated for efficient fast burn
                                                    ¾ reach, 5/8 hex, washer seat (NGKBCP7ES) 

Spring Pads:                              1.570” od/.560” id 

Valve Spring Height:                  1.960” (with stock length valve) 

Pushrods                                    5/16” or 3/8” (check required length)

Rocker Arm Studs                      7/16” unc

Rocker Arm Type                        7/16” stud mounted roller rockers (1.73 ratio) or Yella Terra Planuim #6321 OR T&D shaft rocker sysytems

Chamber size reduction:  .006"/CC.


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                     THANK YOU FOR YOUR INTEREST.


Brand AFD Air Flow Dynamics
Unit Of Measure ea
Modified Item No
Warranty 12 Months Manufacturer
Material Alloy
Non-domestic Product No
Custom Bundle No
Type 351 393 Cleveland Windsor Clevor Boss AFD


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