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All new cylinder heads for the stock replacement and performance market. Assembled cylinder heads are designed to work on stock application with a maximum lift cam of .480”

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Updated 09/21/2020

 

PART #CIDLITERYEARSNOTESIMAGE
EQ-CH364A2944.82001 - 2015REPLACES CASTING NUMBERS: 3317 - LQ4 / LQ9EQ-CH364A
EQ-CH364AA2944.82001 - 2015REPLACES CASTING NUMBERS: 3317 - LQ4 / LQ9 – ASSEMBLEDEQ-CH364AA
EQ-CH364B2944.82001 - 2015REPLACES CASTING NUMBERS: 243 / 799 - LS1 / LS6EQ-CH364B
EQ-CH364BA2944.82001 - 2015REPLACES CASTING NUMBERS: 243 / 799 - LS1 / LS6 – ASSEMBLEDEQ-CH364BA
EQ-CH364C2944.82001 - 2015REPLACES CASTING NUMBERS: 5364 / 821 / 823 - LS3 / L92EQ-CH364C
EQ-CH364CA2944.82001 - 2015REPLACES CASTING NUMBERS: 5364 / 821 / 823 - LS3 / L92 – ASSEMBLEDEQ-CH364CA
EQ-CH364A3235.32001 - 2015REPLACES CASTING NUMBERS: 3317 - LQ4 / LQ9EQ-CH364A
EQ-CH364AA3235.32001 - 2015REPLACES CASTING NUMBERS: 3317 - LQ4 / LQ9 – ASSEMBLEDEQ-CH364AA
EQ-CH364B3235.32001 - 2015REPLACES CASTING NUMBERS: 243 / 799 - LS1 / LS6EQ-CH364B
EQ-CH364BA3235.32001 - 2015REPLACES CASTING NUMBERS: 243 / 799 - LS1 / LS6 – ASSEMBLEDEQ-CH364BA
EQ-CH364C3235.32001 - 2015REPLACES CASTING NUMBERS: 5364 / 821 / 823 - LS3 / L92EQ-CH364C
EQ-CH364CA3235.32001 - 2015REPLACES CASTING NUMBERS: 5364 / 821 / 823 - LS3 / L92 – ASSEMBLEDEQ-CH364CA
EQ-CH364A3646.02001 - 2015REPLACES CASTING NUMBERS: 3317 - LQ4 / LQ9EQ-CH364A
EQ-CH364AA3646.02001 - 2015REPLACES CASTING NUMBERS: 3317 - LQ4 / LQ9 – ASSEMBLEDEQ-CH364AA
EQ-CH364B3646.02001 - 2015REPLACES CASTING NUMBERS: 243 / 799 - LS1 / LS6EQ-CH364B
EQ-CH364BA3646.02001 - 2015REPLACES CASTING NUMBERS: 243 / 799 - LS1 / LS6 – ASSEMBLEDEQ-CH364BA
EQ-CH364C3646.02001 - 2015REPLACES CASTING NUMBERS: 5364 / 821 / 823 - LS3 / L92EQ-CH364C
EQ-CH364CA3646.02001 - 2015REPLACES CASTING NUMBERS: 5364 / 821 / 823 - LS3 / L92 – ASSEMBLEDEQ-CH364CA
EQ-CH364A3816.22001 - 2015REPLACES CASTING NUMBERS: 3317 - LQ4 / LQ9EQ-CH364A
EQ-CH364AA3816.22001 - 2015REPLACES CASTING NUMBERS: 3317 - LQ4 / LQ9 – ASSEMBLEDEQ-CH364AA
EQ-CH364B3816.22001 - 2015REPLACES CASTING NUMBERS: 243 / 799 - LS1 / LS6EQ-CH364B
EQ-CH364BA3816.22001 - 2015REPLACES CASTING NUMBERS: 243 / 799 - LS1 / LS6 – ASSEMBLEDEQ-CH364BA
EQ-CH364C3816.22001 - 2015REPLACES CASTING NUMBERS: 5364 / 821 / 823 - LS3 / L92EQ-CH364C
EQ-CH364CA3816.22001 - 2015REPLACES CASTING NUMBERS: 5364 / 821 / 823 - LS3 / L92 – ASSEMBLEDEQ-CH364CA
EQ-CH364X364-3816.0 - (7.4 LSX)1998 - 2015. For LSX application only to current year model.PERFORMANCE APPLICATION ONLYEQ-CH364X

EQ-CH364A Specifications

INTAKEEXHAUST
Port Volume: 211CC +/- 2cc76 CC +/- 2cc
Port Dimension:3.236” +/- .005 / 1.060 +/- .00051.164” +/-.005 / 1.5755 +/- .005
Port Location: Stock
Valve Head Diameter:2.00”1.57”
Valve Seat Angles:4545
Valve Guide ID:.3145” +/- .0005.3145” +/- .0005
Valve Guide OD:.500”.500”
Chamber Volume: 71CC +/- 2cc
Spark Plug Location: STOCK
Spark Plug Type:STOCK

EQ-CH364B Specifications

INTAKEEXHAUST
Port Volume: 211 +/- 2 cc76 +/- 2cc
Port Dimension:2.232” +/- .005 - 1.020” +/- .0051.180” +/- ..005 – 1.576” +/- .005”
Port Location: Stock
Valve Head Diameter:2.00”1.57”
Valve Seat Angles:4545
Valve Guide ID:3145” +/- .0005.3145” +/- .0005
Valve Guide OD:.500”
Chamber Volume: 65 +/- 2 cc
Spark Plug Location: STOCK
Spark Plug Type:STOCK

EQ-CH364C Specifications

INTAKEEXHAUST
Port Volume: 258 CC +/- 2cc87C CC +/- 2cc
Port Dimension:2.559” +/- .0005 / 1.2515” +/- .00051.427” +/- .0005 / 1.5915” +/- .0005
Port Location: STOCK
Valve Head Diameter:2.165”1.590”
Valve Seat Angles:4545
Valve Guide ID:.3145” +/- .0005.3145” +/- .0005
Valve Guide OD:500”.500”
Chamber Volume: 69 CC +/- 2cc
Spark Plug Location: STOCK
Spark Plug Type:STOCK

EQ-CH364X Specifications

Combustion ChamberCC +/- 2cc
69.8/69/69/70
Intake RunnerCC +/- 5cc
246.5/246.8/246.8/247
Exhaust RunnerCC +/- 5cc
89/89/89.2/89.4
Guide Clearanceuse Prosis Pro
Spec. .0010 / .0026 @ max of .0037
Intake .0019 to .002 / Exh. .002 to .0025
Stem HeightSpec. 2” +/- .005
Intake 1.992 to 2.00
Exh. 2.005 to 2.007
Guide HeightSpec. .6820 +/- .005
Intake .6820 to .6825
Exh. .6825 to .6825
Deck Thickness.500 +/- .010
Spring Height InstalledSpec. 1.800 +/- .010
1.819 to 1.825
New Overall Thickness4.747 to 4.750