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Product Summary

366, 396, 402, 427, 454, Mechanical Water Pump Type

  • High-flow pump with upgraded internals and 5/8" pilot shaft
  • Fits big block Chevy "Mark IV" engines 396-454
  • Long neck (7 1/4") style pump
  • Satin Finish
  • Satin finish with gaskets included

Key Specs

MFG. Part #91015491
BrandSpeedway Motors
Water Pump TypeMechanical
Water Pump StyleLong
Pump FlowHigh-Volume

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Speedway Motors 91015491 Details

From top to bottom, these mechanical pumps are designed for greater performance and reliability. They feature an 8-blade, cast aluminum anti-cavitation impeller. Its 5/8" shaft is driven by heavy-duty bearings and seals, and the crank hub is 1/2" thick for added strength. These Water pumps are cast from lightweight A356 aluminum and heat-treated to T6 hardness. This not only provides strength, but aluminum works to manage heat far better than cast iron.

  • Lightweight A356 Aluminum
  • 5/8" pilot shaft for added strength
  • Fits big block Chevy "Mark IV" engines 396-454
  • Long neck (7 1/4") style pump
  • Satin finish with gaskets included

These high-flow mechanical water pumps provide that extra cooling power your high-performance engine demands. They are lightweight and flow at a rate up to 40% over stock pumps.

  • Long style used in most passenger cars from 1969 and light trucks from 1973 up till the mid-1990s
  • It is important to measure to determine pump style

These high-flow mechanical water pumps provide that extra cooling power your high-performance engine demands. They are lightweight and flow at a rate up to 40% over stock pumps.

  • Long style used in most passenger cars from 1969 and light trucks from 1973 up till the mid-1990s
  • It is important to measure to determine pump style

Speedway Motors 91015491 Specifications

KEY SPECS
MFG. Part #91015491
BrandSpeedway Motors
Water Pump TypeMechanical
Water Pump StyleLong
Pump FlowHigh-Volume
GENERAL
RotationClockwise/Standard
Housing MaterialCast Aluminum
Housing FinishSatin
Housing ColorNatural
Pilot Shaft Diameter0.63 Inch
Gasket(s) IncludedYes
Sold in QuantityEach