![]() *Note: Do not buy this pump for the 1969 400 with Water Pump casting #9796351. Owner modifications to the Pontiac part design are performed at the owner's discretion and FAILURE TO MAINTAIN ADEQUATE CLEARANCE WILL VOID WARRANTY. Please note that inadequate clearance that results in an impeller vane to backing plate interference will cause friction. In closing the impeller-to-plate gap pressure is built, efficiency is achieved and more coolant will route to the thermostat and radiator which initiates the engine cooling process. Some aftermarket plates may have a deeper dome and incremental cooling gains may be experienced by reducing the backing plate-to-impeller vane clearance. Pontiac owners have reported that (1) heat cycling may result in a distortion the backing plate and (2) coolant degradation may corrode the backing plate necessitating replacement. This unit features overhead valve valve gear, a 90 degree V 8 cylinder layout, and 2 valves per cylinder. The power is produced by a naturally aspirated engine of 6.6 litre capacity. Reducing the gap between the backing plate and the impeller The Pontiac Firebird 400 is a rear wheel drive automobile, with its motor located in the front, and a 2 door coupé body. May be used with Pontiac V-8 Serpentine Conversion 326, 350, 389, 400, 455 C.I.Impeller is surface coated with Military Grade Type II anodized finish.16 Blade Machined Aluminum Impeller System.Most importantly, by increasing the flow rate at slower speeds and idle, our pump helps knock the temperature down and keep your Goat cool.įrom 0-3,300 RPM…Nothing Beats a FlowKooler! Reducing the clearance between the vanes and backing plate helps to increase system pressure and reduce the onset of hot spots on cylinder walls and formation of steam pockets in the water jacket. With a substantial reduction in the impeller-casting clearance, we are able to achieve greater flow rates, higher head pressure and higher system pressure. With the increased vane count we have divided the flow and therefore divided the workload thus improving pump efficiency, conserving valuable horsepower and reducing cavitation. Apparel, Cups, Decals, Books, Gift Cardsįlowkooler water pump 1649 features 16 precision machined blades, an integrated shroud and a military-grade anodized finish.
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