63477 - Moroso Water Filler Neck

This part should fit your vehicle. It is a universal part.

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Part #: 63477
Notes: Water Outlet Filler Neck
For Small Block, Big Block and 90 Deg V6 Chevy Intake Manifolds
Your Price: $38.96

Specs

Finish Clear Anodized
Size Straight 1.5 Inch Hose

This Item Also Available In

Part Number Price Notes & Specs
63430 $67.84 Notes Water Neck Bleeder Kit
Cast Aluminum
For Chevy Apps
63431 $111.10 Notes Water Neck Bleeder Kit
Billet Aluminum
For Chevy Apps
63432 $31.98 Notes Water Neck Bleeder Plate
For Chevy Apps
63485 $24.26 Notes Stamped Aluminum Filler Neck
Weld-On
63486 $40.06 Notes Billet Aluminum Filler Neck
Weld-On
63469 $33.42 Notes Filler Neck/Spacer
w/ O-Ring Gasket Grooves
Incl O-Rings
Finish Anodized
63424 $125.53 Notes Manifold Filler Neck Kit
For Chevy Motors
Female Port -16AN
Finish Black Anodized
Material Billet Aluminum
63473 $34.62 Notes Water Outlet Filler Neck
For Small Block, Big Block and 90 Deg V6 Chevy Intake Manifolds
Finish Clear Anodized
Size -16AN
63474 $34.62 Notes Water Outlet Filler Neck
For Small Block, Big Block and 90 Deg V6 Chevy Intake Manifolds
Finish Clear Anodized
Size -20AN
63475 $42.65 Notes Water Outlet Filler Neck
Includes two 3/8in NPT female ports to plumb water to cylinder heads for additional cooling
For Small Block, Big Block and 90 Deg V6 Chevy Intake Manifolds
Finish Clear Anodized
Size -16AN
63476 $42.65 Notes Water Outlet Filler Neck
Includes two 3/8in NPT female ports to plumb water to cylinder heads for additional cooling
For Small Block, Big Block and 90 Deg V6 Chevy Intake Manifolds
Finish Clear Anodized
Size -20AN
63488 $0.00 Notes Billet Aluminum Filler Neck
SAE Type B
Weld-On

All Fitments

UNIVERSAL
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
0 - 0 NON APPLICATION SPECIFIC ALL ALL ALL ALL ALL ALL

Product Description

Keeping your high-performance engine running cool at higher speeds takes more than a good, clean radiator. In fact, operating your engine at higher RPMs for extended periods of time can actually hurt the cooling system’s efficiency. The reason lies with the speed of water as it travels through the engine.

As engine speed increases, so does water pump speed. The faster the engine, the faster water is pumped through the cooling passages of the block and head. At first, this may sound like a positive thing. And for drag racing applications where the runs are short, it is. However, for oval track racing and street performance applications, it’s not! Water needs to absorb heat as it travels through the engine. If traveling too fast, water cannot absorb heat and carry it to the radiator. Additionally, a water pump that “over-speeds” is prone to cavitation.

There are a few simple modifications that can be done to reduce water velocity. One is to change the crankshaft and/or water pump pulleys to obtain slower speeds and prevent water pump cavitation. The other is to install aluminum restrictor plates under the water outlet on the intake manifold. Both allow the coolant to absorb more heat so it can be carried to the radiator and released to the atmosphere.