AFR's 8016 spring is built for use with solid flat tappet cam shafts operating up to 7200 RPM.
AFR's 8016 spring is built for use with solid flat tappet cam shafts operating up to 7200 RPM.
AFR's 8020 spring is designed for use with hydraulic flat tappet cam shafts up to .550" lift.
AFR's 8020 spring is designed for use with hydraulic flat tappet cam shafts up to .550" lift.
AFR's 195cc "Competition" heads are the preferred choice for a more aggressive street or street/strip build. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for displacements up to 400 cubic inches, operating up to 6500-6800 RPM.
Included Components | |
100% CNC Ported Combustion Chambers | |
100% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.080" x 4.900" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 4.950" Overall Valve Length | |
PAC Racing Spring 1.270" OD Hydraulic Dual Valve Spring, 155 lbs. on seat, .650" maximum lift, Max RPM 7000-7200 |
|
7° Chrome Moly Retainers 1.245" O.D x .885" I.D x .655" I.D | |
7° Bead Lock Valve Keepers | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
195cc Competition Head Flow Chart | ||||||
.200 | .300 | .400 | .500 | .550 | .600 | |
Int | 151 | 211 | 260 | 293 | 304 | 308 |
Exh | 125 | 172 | 207 | 224 | 229 | 233 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
AFR's 195cc "Competition" heads are the preferred choice for a more aggressive street or street/strip build. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for displacements up to 400 cubic inches, operating up to 6500-6800 RPM.
Included Components | |
100% CNC Ported Combustion Chambers | |
100% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.080" x 4.900" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 4.950" Overall Valve Length | |
PAC Racing Spring 1.270" OD Hydraulic Dual Valve Spring, 155 lbs. on seat, .650" maximum lift, Max RPM 7000-7200 |
|
7° Chrome Moly Retainers 1.245" O.D x .885" I.D x .655" I.D | |
7° Bead Lock Valve Keepers | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
195cc Competition Head Flow Chart | ||||||
.200 | .300 | .400 | .500 | .550 | .600 | |
Int | 151 | 211 | 260 | 293 | 304 | 308 |
Exh | 125 | 172 | 207 | 224 | 229 | 233 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
AFR`s 195cc "Street" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for displacements up to 400 cubic inches, operating up to 6500 RPM. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250- 2.
Included Components | |
100% CNC Ported Combustion Chambers | |
90% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.050" x 4.900" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 4.950" Overall Valve Length | |
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500, less than 235* duration, upgraded spring #8019 recommended for higher RPM & larger cams |
|
7° Chrome Moly Retainers 1.245" O.D x .885" I.D x .655" I.D | |
7° Bead Lock Valve Keepers | |
ARP 3/8" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
195cc Street Head Flow Chart | |||||
.200 | .300 | .400 | .500 | .550 | |
Int | 146 | 201 | 247 | 275 | 280 |
Exh | 119 | 166 | 197 | 213 | 218 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
AFR`s 195cc "Street" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for displacements up to 400 cubic inches, operating up to 6500 RPM. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250- 2.
Included Components | |
100% CNC Ported Combustion Chambers | |
90% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.050" x 4.900" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 4.950" Overall Valve Length | |
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500, less than 235* duration, upgraded spring #8019 recommended for higher RPM & larger cams |
|
7° Chrome Moly Retainers 1.245" O.D x .885" I.D x .655" I.D | |
7° Bead Lock Valve Keepers | |
ARP 3/8" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
195cc Street Head Flow Chart | |||||
.200 | .300 | .400 | .500 | .550 | |
Int | 146 | 201 | 247 | 275 | 280 |
Exh | 119 | 166 | 197 | 213 | 218 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
Our new 195cc SBC Enforcer cylinder heads are a budget friendly offering that is available as a “No Parts” head or can be ordered fully assembled with the same great components found in our higher end cylinder heads; such as ARP rockers studs, PAC Racing springs, AFR adjustable guide plates and our Stainless Steel valves.
These heads come with an As-Cast surface on the intake runnners, exhaust runners and combustion chambers. They are a perfect choice for anyone looking to upgrade from the factory Iron pieces. Available in straight or angled spark plug configurations. Sold as a single piece, 2 required per engine.
Included Components | |
As Cast Combustion Chambers | |
As Cast Exhaust Ports | |
As Cast Intake Ports | |
3-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.020" x 5.000" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500(upgrades available) |
|
7° Chrome Moly Retainers 1.245" O.D x .885" I.D x .655" I.D | |
7° Bead Lock Valve Keepers | |
ARP 3/8" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .675" O.D x .513" I.D | |
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D |
195cc As Cast Flow Chart | ||||||
.200 | .300 | .400 | .500 | .550 | .600 | |
Int | 133 | 188 | 226 | 250 | 251 | 251 |
Exh | 104 | 138 | 158 | 186 | 191 | 197 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
Our new 195cc SBC Enforcer cylinder heads are a budget friendly offering that is available as a “No Parts” head or can be ordered fully assembled with the same great components found in our higher end cylinder heads; such as ARP rockers studs, PAC Racing springs, AFR adjustable guide plates and our Stainless Steel valves.
These heads come with an As-Cast surface on the intake runnners, exhaust runners and combustion chambers. They are a perfect choice for anyone looking to upgrade from the factory Iron pieces. Available in straight or angled spark plug configurations. Sold as a single piece, 2 required per engine.
Included Components | |
As Cast Combustion Chambers | |
As Cast Exhaust Ports | |
As Cast Intake Ports | |
3-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.020" x 5.000" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500(upgrades available) |
|
7° Chrome Moly Retainers 1.245" O.D x .885" I.D x .655" I.D | |
7° Bead Lock Valve Keepers | |
ARP 3/8" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .675" O.D x .513" I.D | |
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D |
195cc As Cast Flow Chart | ||||||
.200 | .300 | .400 | .500 | .550 | .600 | |
Int | 133 | 188 | 226 | 250 | 251 | 251 |
Exh | 104 | 138 | 158 | 186 | 191 | 197 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
SBC Eliminator Single Plane Race Manifold 23° (3500 to 8000 RPM) AFR #4811
Designed for SB Chevy 23° heads with standard port location. This manifold is excellent for larger cubic inch serious street/strip or a wide variety of race applications.
Recommended intake gasket AFR #6901. Recommended carburetor spacer AFR #4450 1” open or AFR #4460 1” four hole, both are made from lightweight composite material to insulate your fuel from heat soak.
SBC Eliminator Single Plane Race Manifold 23° (3500 to 8000 RPM) AFR #4811
Designed for SB Chevy 23° heads with standard port location. This manifold is excellent for larger cubic inch serious street/strip or a wide variety of race applications.
Recommended intake gasket AFR #6901. Recommended carburetor spacer AFR #4450 1” open or AFR #4460 1” four hole, both are made from lightweight composite material to insulate your fuel from heat soak.
Air Flow Research is proud to announce the release of our NEW 4810 Eliminator SBC aluminum intake manifold. The new AFR intake manifolds are the perfect way to Eliminate the competition!
Air Flow Research is proud to announce the release of our NEW 4810 Eliminator SBC aluminum intake manifold. The new AFR intake manifolds are the perfect way to Eliminate the competition!
AFR's 210cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications and aggressive street/ strip builds up to 400 cubic inches, operating up to 6500- 6800 RPM.
Included Components | |
100% CNC Ported Combustion Chambers | |
100% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.080" x 5.000" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, - 260* max recommended duration, Max RPM 7200-7400 | |
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
10° Bead Lock Valve Keepers | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
210cc Race Ready™ Head Flow Chart | |||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | |
Int | 145 | 199 | 248 | 285 | 301 | 309 | 311 |
Exh | 110 | 158 | 192 | 210 | 214 | 220 | 222 |
210cc Competition Head Flow Chart | |||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | |
Int | 147 | 201 | 257 | 296 | 310 | 318 | 322 |
Exh | 120 | 160 | 214 | 225 | 229 | 235 | 237 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
AFR's 210cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications and aggressive street/ strip builds up to 400 cubic inches, operating up to 6500- 6800 RPM.
Included Components | |
100% CNC Ported Combustion Chambers | |
100% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.080" x 5.000" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, - 260* max recommended duration, Max RPM 7200-7400 | |
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
10° Bead Lock Valve Keepers | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
210cc Race Ready™ Head Flow Chart | |||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | |
Int | 145 | 199 | 248 | 285 | 301 | 309 | 311 |
Exh | 110 | 158 | 192 | 210 | 214 | 220 | 222 |
210cc Competition Head Flow Chart | |||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | |
Int | 147 | 201 | 257 | 296 | 310 | 318 | 322 |
Exh | 120 | 160 | 214 | 225 | 229 | 235 | 237 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
AFR's 220cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This is AFR's largest, best flowing head for use with conventional rocker arms. Recommended for race applications or radical "Pro Street" style builds.
Included Components | |
100% CNC Ported Combustion Chambers | |
100% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.100" x 5.000" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, - 260* max recommended duration, Max RPM 7200-7400 | |
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
10° Bead Lock Valve Keepers with lashcap recess | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
220cc Race Ready™ Head Flow Chart | |||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | |
Int | 155 | 210 | 260 | 295 | 304 | 312 | 318 |
Exh | 116 | 162 | 204 | 220 | 225 | 229 | 233 |
220cc Competition Head Flow Chart | ||||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 | |
Int | 145 | 207 | 263 | 299 | 312 | 316 | 322 | 326 |
Exh | 120 | 160 | 214 | 225 | 229 | 240 | 244 | 245 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe
AFR's 220cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This is AFR's largest, best flowing head for use with conventional rocker arms. Recommended for race applications or radical "Pro Street" style builds.
Included Components | |
100% CNC Ported Combustion Chambers | |
100% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.100" x 5.000" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, - 260* max recommended duration, Max RPM 7200-7400 | |
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
10° Bead Lock Valve Keepers with lashcap recess | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
220cc Race Ready™ Head Flow Chart | |||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | |
Int | 155 | 210 | 260 | 295 | 304 | 312 | 318 |
Exh | 116 | 162 | 204 | 220 | 225 | 229 | 233 |
220cc Competition Head Flow Chart | ||||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 | |
Int | 145 | 207 | 263 | 299 | 312 | 316 | 322 | 326 |
Exh | 120 | 160 | 214 | 225 | 229 | 240 | 244 | 245 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe
AFR's 227cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This head features 60/40 valve spacing and requires shaft mount rocker arms for optimum valve train geometry (can be used with .050 offset intake rockers for drag race only applications).
Included Components | |
100% CNC Ported Combustion Chambers | |
100% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.100" x 5.000" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, - 260* max recommended duration, Max RPM 7200-7400 | |
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
10° Bead Lock Valve Keepers with lashcap recess | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x.375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
227cc Race Ready™ Flow Chart | ||||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 | |
Int | 148 | 210 | 261 | 296 | 304 | 312 | 315 | 318 |
Exh | 116 | 155 | 204 | 220 | 225 | 229 | 233 | 237 |
227cc Competition Flow Chart | |||||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 | .750 | |
Int | 152 | 212 | 260 | 292 | 310 | 316 | 322 | 327 | 329 |
Exh | 120 | 160 | 214 | 230 | 234 | 238 | 241 | 243 | 245 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe
AFR's 227cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This head features 60/40 valve spacing and requires shaft mount rocker arms for optimum valve train geometry (can be used with .050 offset intake rockers for drag race only applications).
Included Components | |
100% CNC Ported Combustion Chambers | |
100% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
|
8mm Bead Lock Intake Valve, 2.100" x 5.000" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length | |
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, - 260* max recommended duration, Max RPM 7200-7400 | |
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
10° Bead Lock Valve Keepers with lashcap recess | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x.375" Deep | |
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
8mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
227cc Race Ready™ Flow Chart | ||||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 | |
Int | 148 | 210 | 261 | 296 | 304 | 312 | 315 | 318 |
Exh | 116 | 155 | 204 | 220 | 225 | 229 | 233 | 237 |
227cc Competition Flow Chart | |||||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 | .750 | |
Int | 152 | 212 | 260 | 292 | 310 | 316 | 322 | 327 | 329 |
Exh | 120 | 160 | 214 | 230 | 234 | 238 | 241 | 243 | 245 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe
Our 235cc "Competition" heads come with 100% CNC machined intake runners, exhaust ports and combustion chambers. Equipped with Titanium retainers and high quality components, featuring a 60/40 valve spacing which requires shaft mounted rocker arms for optimum valve train geometry (can be used with .050 offset intake rockers for drag race only applications).
Included Components | ||
100% CNC Ported Combustion Chambers | ||
100% CNC Ported Exhaust Ports | ||
100% CNC Ported Intake Ports | ||
Competition 5-angle Valve Job |
||
8mm Bead Lock Intake Valve, 2.125" x 5.00" long O.A.L. | ||
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" long O.A.L. | ||
PAC Racing Springs 1.550" OD Solid Roller Dual Drag Race Spring, 250 lbs on seat, .800" maximum lift, Max RPM 8000-8200 | ||
10° Titanium Retainers 1.500” O.D x 1.120” I.D x .705” I.D | ||
10° Bead Lock Valve Keepers with lashcap recess | ||
ARP 7/16" Rocker Studs | ||
Adjustable 5/16" Guide Plates | ||
Viton Valve Seals .600" O.D x .495" I.D | ||
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D | ||
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x.375" Deep | ||
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | ||
8mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
235cc Competition Flow Chart | |||||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 | .800 | |
Int | 159 | 221 | 261 | 295 | 311 | 318 | 327 | 331 | 336 |
Exh | 120 | 165 | 214 | 228 | 237 | 238 | 243 | 245 | 250 |
Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe
Our 235cc "Competition" heads come with 100% CNC machined intake runners, exhaust ports and combustion chambers. Equipped with Titanium retainers and high quality components, featuring a 60/40 valve spacing which requires shaft mounted rocker arms for optimum valve train geometry (can be used with .050 offset intake rockers for drag race only applications).
Included Components | ||
100% CNC Ported Combustion Chambers | ||
100% CNC Ported Exhaust Ports | ||
100% CNC Ported Intake Ports | ||
Competition 5-angle Valve Job |
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8mm Bead Lock Intake Valve, 2.125" x 5.00" long O.A.L. | ||
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" long O.A.L. | ||
PAC Racing Springs 1.550" OD Solid Roller Dual Drag Race Spring, 250 lbs on seat, .800" maximum lift, Max RPM 8000-8200 | ||
10° Titanium Retainers 1.500” O.D x 1.120” I.D x .705” I.D | ||
10° Bead Lock Valve Keepers with lashcap recess | ||
ARP 7/16" Rocker Studs | ||
Adjustable 5/16" Guide Plates | ||
Viton Valve Seals .600" O.D x .495" I.D | ||
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D | ||
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x.375" Deep | ||
Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | ||
8mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
235cc Competition Flow Chart | |||||||||
.200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 | .800 | |
Int | 159 | 221 | 261 | 295 | 311 | 318 | 327 | 331 | 336 |
Exh | 120 | 165 | 214 | 228 | 237 | 238 | 243 | 245 | 250 |
Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe
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