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Impulse Water Neck 90° (thermostat housing)
Clears large air cleaners with low drop base and makes engines used for performance or towing run 50°C (90°F) COOLER
Impulse water neck features a 38mm (1.5") OD outlet with a 90° bend to clear large air cleaners with a low drop base and fits Chrysler small block intake manifolds with the common large water neck flange. The water neck also features a small tapered hole to circulate the water through the cooling system at a low flow rate of 23 L/min (5 gpm) from idle to peak rpm. This allows the radiator more time to cool the water which keeps the water temperature below a cool 50°C (122°F) when used in conjunction with the parts of the Negative Supercharging Cooling System.
To find out if your engine is fitted with the correct
combination of cooling system parts needed to work
with the Impulse water neck to make the engine run
this cool, see Negative
Supercharging Cooling System.
DO NOT use any thermostat with the Impulse water neck.
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