Flowkooler high flow pump #1622 for Pontiacs with the 8 bolt pattern has a 16 vane CNC machined billet impeller. Its shrouded and ported and, with the increased vane count and a reduced impeller clearance, it really pumps the coolant. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller's color is due to Type II Class II military grade surface coating which protects against corrosive fluids.

FlowKooler introduced the first hi flow pumps and continues to improve impeller design. Why is increased flow so important to cooling a hot Pontiac engine? Because it has been proven time and time again that reducing the cycle time between the heat source and the heat sink creates more opportunities to shed heat and drop engine temperatures.

A Note on plates and gaskets:

The 8 bolt water pump used prior to 1968 has two steel plates in the timing cover behind the water pump. The center hole draws the fluid in and the plates route the flow to the left and right side of the engine.

1968 used a single divider plate and also had two additional rubber gaskets/rings that slide into the holes and assist in sealing and aligning the divider plate. Absent rubber gaskets the two divider plates may float inside the timing cover and some people have report a "rattle" sound. A work around proposed online suggests using a "dab" of RTV" to mitigate sound.

From 0-3,300 RPM…Nothing Beats a FlowKooler!

General Specifications:
Type of Material of Pump Body	Cast Iron
Number of Blades on Impeller	16
Direction of Rotation	CW
Fan Hub Height	3 5/8"
Shaft Diameter	5/8"
Other Special Features:
CNC machined billet aluminum impeller with 16 vanes Impeller protected with a military grade Type II anodized surface coating 8 bolt mounting pattern consistent with ‘64-‘65 casting 9772716 and ‘66-‘68 casting 4782482 that used the 2" tall pulley Divider plates shown for illustration and are not included. Alternative Part Number 12307792, 9772372, 9772716, 9777913, 977913, 9782482, 9784281, 9788609, 9793130, 5511137, 58299, 511515, 251137, 252576, AW850, CWP831, 10673, 10675, 673, 675, 140905, B485, P485, P904, 90814, 50485, 2281622, 18347, ELGWP850, 87674102650, FP1388N, 1302850, 43122, 311030, HYT11030C, P904, 16280, 43122, 614943, 3381, 2615, PC346, WP485, FP1388N, T4062, US850, WH3010
Parts Contained in Box:
Mounting Gasket, Installation Sheet, FlowKooler Decal

Make	Model	Year	Block	CID	Liters
PONTIAC	ACADIAN	71-69	V8	350	5.7L
PONTIAC	BONNEVILLE	66-59	V8	389	6.4L
PONTIAC	BONNEVILLE	68-63	V8	400	6.6L
PONTIAC	BONNEVILLE	68-67	V8	428	7.0L
PONTIAC	CATALINA	60-59	All	All	All
PONTIAC	CATALINA	65-63	V8	389	6.4L
PONTIAC	CATALINA	68-62	V8	400	6.6L
PONTIAC	CATALINA	1967	V8	428	7.0L
PONTIAC	EXECUTIVE	68-67	V8	400	6.6L
PONTIAC	EXECUTIVE	68-67	V8	428	7.0L
PONTIAC	FIREBIRD	1967	L6	231	3.8L
PONTIAC	FIREBIRD	1967	V8	326	5.3L
PONTIAC	FIREBIRD	68-67	V8	350	5.7L
PONTIAC	GRAND PRIX	1962	All
PONTIAC	GRAND PRIX	66-63	V8	389	6.4L
PONTIAC	GRAND PRIX	68-63	V8	400	6.6L
PONTIAC	GRAND PRIX	68-67	V8	428	7.0L
PONTIAC	GTO	1966	All
PONTIAC	GTO	65-64	V8	326	5.3L
PONTIAC	GTO	65-64	V8	389	6.4L
PONTIAC	GTO	68-65	V8	400	6.6L
PONTIAC	LEMANS	1963	L4	195	3.2L
PONTIAC	LEMANS	67-64	V8	326	5.3L
PONTIAC	LEMANS	1968	V8	350	5.7L
PONTIAC	LEMANS	66-63	V8	389	6.4L
PONTIAC	LEMANS	1968	V8	400	6.6L
PONTIAC	SAFARI	62-61	All	All	All
PONTIAC	SAFARI	1964	V8	389	6.4L
PONTIAC	SAFARI	1968	V8	350	5.7L
PONTIAC	SAFARI	68-64	V8	400	6.6L
PONTIAC	STAR CHIEF	1962	L6	265	4.3L
PONTIAC	STAR CHIEF	66-59	V8	389	6.4L
PONTIAC	STAR CHIEF	66-63	V8	400	6.6L
PONTIAC	STAR CHIEF	65-63	V8	421	6.9L
PONTIAC	TEMPEST	63-61	L4	195	3.2L
PONTIAC	TEMPEST	66-65	V8	326	5.3L
PONTIAC	TEMPEST	1968	V8	350	5.7L
PONTIAC	TEMPEST	64-63	V8	389	6.4L
PONTIAC	TEMPEST	1969	V8	428	7.0L
PONTIAC	VENTURA	1961	V8	389	6.4L