Cylinder Head Flow Data

Repair and Manual

Wonder what heads to get? Only want to buy them once? Then you are in the right place. Here is a set of flow numbers from some of the most prominent cylinder head maufacturers for you to compare. Then you can decide what head will best fit your application and needs.

	Stock		Holley		AFR165		AFR185		Canfield
Lift	Intake	Exh	Intake	Exh	Intake	Exh	Intake	Exh	Intake	Exh
0.100	48	41	60	57	60	51	63	51	70	54
0.200	92	78	119	95	123	118	129	118	152	102
0.300	130	95	166	126	186	153	189	153	203	132
0.400	141	102	202	152	225	178	234	178	242	171
0.500	155	106	219	196	250	185	267	186	261	190
Average Flow:	112.4	84.4	153.2	119.2	168.8	137	176.4	137	185.6	129.8
Area Of The Curve:	92.88	82	145.88	114	159.77	131.66	166.33	131.66	177.22	123.11
Diffrence in %:	0%	0%	36%	41.2%	51.1%	62.3%	56.9%	62.3%	65.1%	53.7%

	GT-40X		Brodix 5.0		GT-40P		Windsor Jr.		Windsor Sr.
Lift	Intake	Exh	Intake	Exh	Intake	Exh	Intake	Exh	Intake	Exh
0.100	56	49	61	58	61	50	54	47	54	46
0.200	105	105	125	93	125	89	105	101	120	100
0.300	154	141	175	130	166	120	141	125	165	126
0.400	192	158	215	155	195	132	170	140	201	140
0.500	210	162	230	172	196	138	186	148	221	146
Average Flow:	143.4	123	161.2	121.6	148.6	105.8	131.2	112.2	152.2	111.6
Area Of The Curve:	136	118.66	153.55	116	143.33	102.22	125.11	108.22	144.55	107.7
Diffrence in %:	54.4%	45.7%	43.4%	44.1%	32.5%	25.3%	16.7%	32.9%	35.4%	32.2%

	Edel (1.90)		Edel RPM		Avenger		BrodixTKR1(2.02)		Twisted Wedge
Lift	Intake	Exh	Intake	Exh	Intake	Exh	Intake	Exh	Intake	Exh
0.100	56	41	70	57	70	63	67	67	62	48
0.200	114	91	128	104	140	103	127	111	131	97
0.300	166	132	183	142	194	139	173	145	193	134
0.400	200	160	219	163	226	164	216	170	230	161
0.500	214	171	229	172	253	185	243	190	242	170
Average Flow:	150	119	165.8	127.6	176.6	130.8	165.2	136.6	171.6	123.6
Area Of The Curve:	142.88	113.22	158.77	122.66	168.11	124.77	156.55	130.66	163.77	117.55
Diffrence in %:	33.5%	40.9%	47.5%	51.1%	57.1%	54.9%	46.9%	61.8%	52.6%	46.4%

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