AFR LS1 225cc fully CNC ported, 62cc chambers, Big Bore, AFR LS1 225cc fully CNC ported, 62cc chambers, Big Bore, AFR 225cc LSX Mongoose Strip Aluminum Cylinder Heads The Ultimate Bolt-On Emission Legal Street/Strip Weapon C'); // ]]> 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 Researchs 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 typcially 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 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.

AFR LS1 225cc fully CNC ported, 62cc chambers, Big Bore,

Code: 1610
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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
C'); // ]]>

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 Researchs 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 typcially 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

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.

225cc LSX Mongoose Strip Aluminum Cylinder Heads

The Ultimate Bolt-On Emission Legal Street/Strip Weapon

LSX 225cc Mongoose cylinder heads
C'); // ]]>

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 Researchs 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 typcially 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

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.