D-Port Exhaust Heads For Pontiacs

We flow-tested both the iron Pontiac heads and KREs on the same Superflow 600 flowbench at Westech used to test all CC's heads.

AIRFLOW CHART
VALVE	IRON 7K3		KRE ALUMINUM
OPENING	INT	EXT	INT	EXT
0.050	38	24	33	26
0.100	80	51	67	55
0.200	143	96	148	100
0.300	180	125	198	134
0.400	201	142	227	154
0.500	211	162	235	170
0.600	215	168	236	180
0.700	219	171	234	183
*Intake and exhaust results are in cfm.

'If for some reason you want a set of 7K3 heads, JMS has another pair.

Prev | 1 | 2 | 3 | 4 | 5

Get a FREE no-hassle price quote on any new car.

	1974 Pontiac GTO - Action!! '74 GTO gets destroyed at the track... more
	Dynatech Competition Exhaust- Prodigious Pontiac Power Bolt-On Horsepower And Torque With Dynatech's F-Body Stainless Header System... more
	1990 Pontiac Trans Am - 12 Seconds and 25 MPG We were desperate for a 12-second e.t. when we wrestled with our '91 Formula Firebird in the June... more
	455 Buildup Back in the good old days when there was no replacement for raw displacementand what was good for... more