AFR LS1 225cc fully CNC ported, 65cc chambers, Small Bore, comp AFR LS1 225cc fully CNC ported, 65cc chambers, Small Bore, comp AFR 225cc LSX Mongoose Strip Aluminum Cylinder Heads The Ultimate Bolt-On Emission Legal Street/Strip Weapon Click to enlarge For the maximum high performing street/strip LS1/LS2/LS6 aluminum cylinder heads AFRs all new 225cc emission legal E/O #D250-4 are hands down the best choice. Specifically designed for 1997 to present Gen-3 Chevy Corvettes, Camaros, and trucks. AFRs LSX cylinder head offers unmatched flow performance and features 2.080 intake and 1.600 exhaust valves with AFRs iron ductile interlocking valve seats. Our 225cc cylinder head is ideal for normally aspirated 396C.I. to 427C.I. For a wild 346 ci the 225 is a good choice, however some low RPM loss of torque might occur. It is available with 62cc, 65cc, and 72cc combustion chambers. AFRs LSX is a direct bolt on, no special parts required .Structural features like Air Flow Research trademark 3/4 thick head deck, a must for blown and nitrous applications, reinforced rocker stud bosses and thick wall runners provide unparalled durability. An exclusive new modern combination chamber design with double quench pad area helps the LSX generate huge low and mid lift airflow numbers. If you need a snake charmer for that pesky neighborhood Cobra Mustang look no further! Note: Hydraulic roller cams in "LS" Gen III engines typically experience valve float at 6600-6800 RPM's. If you are using aftermarket rocker arms valve float will become prominent and AFR highly recommends upgrading to our #8019 spring. If you plan on running over .600 gross valve lift and/or 6600 RPM, AFR suggests you upgrade your springs to AFR part #8019. Our upgrade spring has higher seat and open pressures (155/410+) to better reduce the risk of valve float in more aggressive applications. FYI: LSX bead locks and aftermarket bead locks are not interchangeable. GM made their bead lock radius and depth different. AFR locks are the same as GM LSX. 225cc Large Bore LSX Aluminum Cylinder Head Flow Chart AFR 1630 tested on 4.125 bore 225cc Small Bore LSX Aluminum Cylinder Head Flow Chart AFR 1660 test on 3.900 bore Basic Package Components 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle Radiused Valve Job AFR #7208 Bead Lock Intake Valve, 2.080" standard length AFR #7228 Bead Lock Exhaust Valve, 1.600" standard length FR #8019 1.290" OD Hydraulic Valve Spring with dampener, 135 lbs. on seat, .600: maximum lift AFR #87° 1.250 Titanium Retainers AFR #9007 7° Bead Lock Valve Keepers AFR #6612 Viton Valve Seals AFR #8042 Hardened Spring Cup AFR #9059 Intake Valve Seats AFR #9069 Exhaust Valve Seats AFR #9051 Bronze Valve Guides Specifications, Features, and Optional Supporting Components 11mm ARP 70ft. lbs. w/ Moly Head Torque 8mm 23ft. lbs. w/ Moly Head Torque AFR #6859 or GM#12558573 Exhaust Port Gasket Fel-Pro #1440 225cc Intake Port Volume 85cc Exhaust Port Volume AFR #6847 Head Gasket Fel-Pro #1041 AFR #6848 Cometic Head Gasket AFR #6330 6 pt. Head Bolts AFR #6331 6 pt. Head Studs AFR #6332 12 pt. Head Studs AFR #6328 Head Bolt Washers AFR #6329 Head Bolt Washers Jesel or TD Shaft Mount LS6 Suggested Manifold FAST TPIS Suggested Manifold AC 41-974 Platinum Spark Plug Starting Range 62cc, 65cc or 72cc Combustion Chambers 1.250 Spring Pocket Stock Valve Spacing Stock Rocker Arms Stock Valve Angle .006" per cc Flat Mill (milling options available) Note: Milling head deck will affect flow numbers. www.airflowresearch.com

AFR LS1 225cc fully CNC ported, 65cc chambers, Small Bore, comp

Code: 1660
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225cc LSX Mongoose Strip Aluminum Cylinder Heads

The Ultimate Bolt-On Emission Legal Street/Strip Weapon

LSX 225cc Mongoose cylinder heads
Click to enlarge

For the maximum high performing street/strip LS1/LS2/LS6 aluminum cylinder heads AFRs all new 225cc emission legal E/O #D250-4 are hands down the best choice. Specifically designed for 1997 to present Gen-3 Chevy Corvettes, Camaros, and trucks. AFRs LSX cylinder head offers unmatched flow performance and features 2.080 intake and 1.600 exhaust valves with AFRs iron ductile interlocking valve seats. Our 225cc cylinder head is ideal for normally aspirated 396C.I. to 427C.I. For a wild 346 ci the 225 is a good choice, however some low RPM loss of torque might occur. It is available with 62cc, 65cc, and 72cc combustion chambers. AFRs LSX is a direct bolt on, no special parts required .Structural features like Air Flow Research trademark 3/4 thick head deck, a must for blown and nitrous applications, reinforced rocker stud bosses and thick wall runners provide unparalled durability. An exclusive new modern combination chamber design with double quench pad area helps the LSX generate huge low and mid lift airflow numbers. If you need a snake charmer for that pesky neighborhood Cobra Mustang look no further!

Note:

Hydraulic roller cams in "LS" Gen III engines typically experience valve float at 6600-6800 RPM's. If you are using aftermarket rocker arms valve float will become prominent and AFR highly recommends upgrading to our #8019 spring. If you plan on running over .600 gross valve lift and/or 6600 RPM, AFR suggests you upgrade your springs to AFR part #8019. Our upgrade spring has higher seat and open pressures (155/410+) to better reduce the risk of valve float in more aggressive applications.

FYI:

LSX bead locks and aftermarket bead locks are not interchangeable. GM made their bead lock radius and depth different. AFR locks are the same as GM LSX.

225cc Large Bore LSX Aluminum Cylinder Head Flow Chart

AFR 1630 tested on 4.125 bore

225cc LS1 Cylinder Head Big Bore Flow Chart

225cc Small Bore LSX Aluminum Cylinder Head Flow Chart

AFR 1660 test on 3.900 bore

225cc LS1 Cylinder Head Small Bore Flow Chart

Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
3-angle Radiused Valve Job
AFR #7208 Bead Lock Intake Valve, 2.080" standard length
AFR #7228 Bead Lock Exhaust Valve, 1.600" standard length
FR #8019 1.290" OD Hydraulic Valve Spring with dampener, 135 lbs. on seat, .600: maximum lift
AFR #87° 1.250 Titanium Retainers
AFR #9007 7° Bead Lock Valve Keepers
AFR #6612 Viton Valve Seals
AFR #8042 Hardened Spring Cup
AFR #9059 Intake Valve Seats
AFR #9069 Exhaust Valve Seats
AFR #9051 Bronze Valve Guides




Specifications, Features, and Optional Supporting Components
11mm ARP 70ft. lbs. w/ Moly Head Torque
8mm 23ft. lbs. w/ Moly Head Torque
AFR #6859 or GM#12558573 Exhaust Port Gasket Fel-Pro #1440
225cc Intake Port Volume
85cc Exhaust Port Volume
AFR #6847 Head Gasket Fel-Pro #1041
AFR #6848 Cometic Head Gasket
AFR #6330 6 pt. Head Bolts
AFR #6331 6 pt. Head Studs
AFR #6332 12 pt. Head Studs
AFR #6328 Head Bolt Washers
AFR #6329 Head Bolt Washers
Jesel or TD Shaft Mount
LS6 Suggested Manifold
FAST TPIS Suggested Manifold
AC 41-974 Platinum Spark Plug Starting Range
62cc, 65cc or 72cc Combustion Chambers
1.250 Spring Pocket
Stock Valve Spacing
Stock Rocker Arms
Stock Valve Angle
.006" per cc Flat Mill (milling options available)

Note: Milling head deck will affect flow numbers.

www.airflowresearch.com

225cc LSX Mongoose Strip Aluminum Cylinder Heads

The Ultimate Bolt-On Emission Legal Street/Strip Weapon

LSX 225cc Mongoose cylinder heads
Click to enlarge

For the maximum high performing street/strip LS1/LS2/LS6 aluminum cylinder heads AFRs all new 225cc emission legal E/O #D250-4 are hands down the best choice. Specifically designed for 1997 to present Gen-3 Chevy Corvettes, Camaros, and trucks. AFRs LSX cylinder head offers unmatched flow performance and features 2.080 intake and 1.600 exhaust valves with AFRs iron ductile interlocking valve seats. Our 225cc cylinder head is ideal for normally aspirated 396C.I. to 427C.I. For a wild 346 ci the 225 is a good choice, however some low RPM loss of torque might occur. It is available with 62cc, 65cc, and 72cc combustion chambers. AFRs LSX is a direct bolt on, no special parts required .Structural features like Air Flow Research trademark 3/4 thick head deck, a must for blown and nitrous applications, reinforced rocker stud bosses and thick wall runners provide unparalled durability. An exclusive new modern combination chamber design with double quench pad area helps the LSX generate huge low and mid lift airflow numbers. If you need a snake charmer for that pesky neighborhood Cobra Mustang look no further!

Note:

Hydraulic roller cams in "LS" Gen III engines typically experience valve float at 6600-6800 RPM's. If you are using aftermarket rocker arms valve float will become prominent and AFR highly recommends upgrading to our #8019 spring. If you plan on running over .600 gross valve lift and/or 6600 RPM, AFR suggests you upgrade your springs to AFR part #8019. Our upgrade spring has higher seat and open pressures (155/410+) to better reduce the risk of valve float in more aggressive applications.

FYI:

LSX bead locks and aftermarket bead locks are not interchangeable. GM made their bead lock radius and depth different. AFR locks are the same as GM LSX.

225cc Large Bore LSX Aluminum Cylinder Head Flow Chart

AFR 1630 tested on 4.125 bore

225cc LS1 Cylinder Head Big Bore Flow Chart

225cc Small Bore LSX Aluminum Cylinder Head Flow Chart

AFR 1660 test on 3.900 bore

225cc LS1 Cylinder Head Small Bore Flow Chart

Basic Package Components 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle Radiused Valve Job AFR #7208 Bead Lock Intake Valve, 2.080" standard length AFR #7228 Bead Lock Exhaust Valve, 1.600" standard length FR #8019 1.290" OD Hydraulic Valve Spring with dampener, 135 lbs. on seat, .600: maximum lift AFR #87° 1.250 Titanium Retainers AFR #9007 7° Bead Lock Valve Keepers AFR #6612 Viton Valve Seals AFR #8042 Hardened Spring Cup AFR #9059 Intake Valve Seats AFR #9069 Exhaust Valve Seats AFR #9051 Bronze Valve Guides




Specifications, Features, and Optional Supporting Components 11mm ARP 70ft. lbs. w/ Moly Head Torque 8mm 23ft. lbs. w/ Moly Head Torque AFR #6859 or GM#12558573 Exhaust Port Gasket Fel-Pro #1440 225cc Intake Port Volume 85cc Exhaust Port Volume AFR #6847 Head Gasket Fel-Pro #1041 AFR #6848 Cometic Head Gasket AFR #6330 6 pt. Head Bolts AFR #6331 6 pt. Head Studs AFR #6332 12 pt. Head Studs AFR #6328 Head Bolt Washers AFR #6329 Head Bolt Washers Jesel or TD Shaft Mount LS6 Suggested Manifold FAST TPIS Suggested Manifold AC 41-974 Platinum Spark Plug Starting Range 62cc, 65cc or 72cc Combustion Chambers 1.250 Spring Pocket Stock Valve Spacing Stock Rocker Arms Stock Valve Angle .006" per cc Flat Mill (milling options available)

Note: Milling head deck will affect flow numbers.

www.airflowresearch.com