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EQ CYLINDER HEADS: FLOW NUMBERS

EQ strictly by the numbers. How our heads stack up.

Need to know how our numbers compare against the competi­tion? We provide you with the following extensive list of cylinder head flow numbers to help you decide.ALL CYLINDER HEAD TESTING WAS DONE AT SEA LEVEL AT 28” ON A SF1020 BENCH.

Updated as of 06/14/2017


CH318A / CH318B

INTAKE EXHAUST 
LIFTCFMLIFTCFM
0.10068.20.10057.2
0.200124.10.200114.1
0.300179.60.300155.3
0.400213.80.400180.0
0.500227.00.500187.3
0.600233.10.600188.7
0.7000.700

CH350I

INTAKE EXHAUST 
LIFTCFMLIFTCFM
0.10071.20.10059.4
0.200134.60.200105.2
0.300189.40.300139.8
0.400216.90.400144.1
0.500225.80.500144.5
0.600213.40.600142.3
0.700212.20.700143.1

CH350C

INTAKE EXHAUST 
LIFTCFMLIFTCFM
0.10071.20.10059.4
0.200134.60.200105.2
0.300189.40.300139.8
0.400216.90.400144.1
0.500225.80.500144.5
0.600213.40.600142.3
0.700212.20.700143.1

CH350H

INTAKE EXHAUST 
LIFTCFMLIFTCFM
0.10071.20.10059.4
0.200134.60.200105.2
0.300189.40.300139.8
0.400216.90.400144.1
0.500225.80.500144.5
0.600213.40.600142.3
0.700212.20.700143.1

CH350G

INTAKE EXHAUST 
LIFTCFMLIFTCFM
0.10071.20.10059.4
0.200134.60.200105.2
0.300189.40.300139.8
0.400216.90.400144.1
0.500225.80.500144.5
0.600213.40.600142.3
0.700212.20.700143.1

CH454A

INTAKE EXHAUST 
LIFTCFMLIFTCFM
0.10075.90.10066.0
0.200144.20.200126.6
0.300214.50.300168.9
0.400273.90.400204.6
0.500326.40.500231.0
0.600355.60.600252.9
0.700362.80.700271.2

CH454B

INTAKE EXHAUST 
LIFTCFMLIFTCFM
0.10077.70.10072.9
0.200141.50.200128.3
0.300209.40.300169.9
0.400271.90.400206.2
0.500325.60.500228.1
0.600259.40.600251.2
0.700371.20.700268.4
0.800375.70.800278.9

CH502A

INTAKE EXHAUST 
LIFTCFMLIFTCFM
0.10074.20.10074.5
0.200142.60.200123.5
0.300220.40.300150.6
0.400270.20.400173.3
0.500302.40.500192.8
0.600314.70.600214.2
0.700320.40.700226.4
0.800278.90.800278.9

CC200BA

INTAKE EXHAUST 
LIFTCFMLIFTCFM
0.10074.80.10065.5
0.200137.20.200113.3
0.300185.70.300146.9
0.400225.00.400170.2
0.500252.50.500181.7
0.600265.40.600187.8
0.700272.20.700189.5

DYNO RESULTS –
CAM .474” / .510” LIFT
Carb. 650 Holly Run on ZZ4 short block

CC200BA

RPMTORQEPOWER
2500334.2159.1
2600358.3177.3
2700390.5200.7
2800396.2211.2
2900402.2222.0
3000100.3228.6
3100397.5234.6
3200395.5241.0
3300395.0248.2
3400397.2257.1
3500397.6265.0
3600398.8273.4
3700401.2282.6
3800403.8292.1
3900406.4301.8
4000409.2311.7
4100409.3319.5
4200407.4325.8
4300403.8330.6
4400399.5334.7
4500397.8340.8

 

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