PAIR CNC Ported 210cc Runner Ford 302W 351W Windsor Aluminium Alloy Cylinder Heads BARE V8 SBF

DRP’s Small Block Ford Windsor cylinder heads offer a cylinder head with improved port and combustion chamber designs that result in “Bolt on Horsepower”!

Cylinder Heads play such a critical role in your engine and performance cylinder heads usually come at a significant cost. The DRP range of Cylinder heads are easy on the budget while delivering on performance, precision and quality. The DRP “as-cast” ports and chambers perform out of the box. These CNC versions are an improvement on the As Cast versions.

All DRP Cylinder Heads are manufactured using a permanent steel mold, ensuring consistency and clean water jackets for a cooler running motor. Made from premium 355-T6 Hard Aluminium material, these heads wont go soft. Having ductile-iron CNC 3 angle valve seats, CNC surfaces, strict quality-control checks, these are a true premium quality product.   

With dyno proven results and years in service, you won’t find any better valued performance cylinder head.

Dont waste your time or money on rebuilding old Cast Iron units. Forget the headaches of poor valve seats, crack testing woes and restrictive ports of old cylinder heads - upgrade now!

Small Block Ford 20° Aluminium Cylinder Heads.

CNC Competition Ports. With 210cc intake runner size, the heads are perfect upgrade for the 347 Stoker and larger Windsor based high performance engins. DRP have not CNC machined the combustion chambers, because they dont have to. The Chambers are perfect as cast! An added benefit is the combustion chamber stays small, maintaining compression.

Valve sizes are 2.020" Intake and 1.600" Exhaust. The key is in the design of the port shape. Offering velocity for sharp responsiveness and gobs of Torque, while having the port volume to still carry the HP through the RPM range! They flow xxxHP @ just 0.450” lift and xxx HP @ just 0.600” lift while maintaining the flow right through to 0.800” lift! This is all achieved on a 4.030” bore and out of the box! These same cylinder heads have produced 600HP having the chamber opened up to match the larger 4.125” bores in the 360 cube small blocks! The internal cast quality of the water jackets are super smooth for maximum flow to keep your motor cool while under maximum load.

The SBF heads utilise OEM mounting points so fitting up accessories is not a problem. The port sizes and locations will work with both 8.2-deck 302-based engines and 9.5-deck 351W-based combinations. The cylinder heads accept both the 351W ½” head bolts and the smaller 302W 7/16” head bolts. When using the smaller 7/16" head bolts, included in the box are hardened step down washers. Rocker studs use a 7/16 thread base and 1 piece guide plates can be used to simplify your valve train package.

The DRP cylinder head range are available Bare or Assembled using proven quality valve train components.

• Intake Runner Volume:    210cc  CNC ported
• Exhaust Runner Volume: 78cc   CNC ported
• Chamber size:  60cc (AS CAST)
• Internal Cast Quality ( Super Smooth Water Jackets for maximum flow - see our photos of the internal casting) 
• Optimal Spark Plug position. 
• Premium Bronze Valve Guides.
• Hard 355-T6 Aluminium - Race Quality.
• 3 Angle CNC Valve Seats
• Minimum Chamber size 54cc (can be machined down .006" / cc)
• Intake Valve size: 2.02" 
• Exhaust Valve size: 1.60"
• Valve Spring Pocket:  1.600" OD
• Guide Material:  Bronze
• Guide Size:  .570" OD x 11/32" Vavle stem
• Stem seal size:  .530"
• Recommended Spark Plugs: 750 reach gasketed 5/8 hex. NGK-BCPR7ES
• Recommended Intake Gaskets: Felpro 1262
• Recommended Guide Plates: Comp Cams 4816-8

Flow Figures are in CFM and taken at 28"hg on a 4.030" Bore. *

Note, When comparing flow figures, take into consideration comparable bore size flow figures. A larger bore size will increase advertised flow numbers considerably due to unshrouding of the valve. 

HP figures are "Potential" based on Flow/Velocity calculations* 

Lift          Intake          Exhaust

200         135               100

300         187               126

400         233               160

450         249               170

500        264                178

550        274                184

600        278                190

650        286                193

700        290                196

750        296                198

800        292                199