Small Block Chevy Adjustable Water Pump w/Underdrive Pulleys

#91605200

Small Block Chevy Adjustable Water Pump w/Underdrive Pulleys

Extra thick fan hub with 3/4" fan snout, 3/4" ultra duty bearings
Fan hub press-fit and set-screw retained, Precision impeller
Adjustable cam stop and mounting holes

$312.99

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$319.32

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Product Summary

Mechanical Water Pump Type, Clockwise/Standard Rotation

Extra thick fan hub with 3/4" fan snout, 3/4" ultra duty bearings
Fan hub press-fit and set-screw retained, Precision impeller
Adjustable cam stop and mounting holes
Features a cast aluminum construction and natural finish
This V-style belt has a width of .43" and a length of 32.625"

Comes as a Kit

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Key Specs

MFG. Part #	91605200
Water Pump Type	Mechanical
Water Pump Style	Short Depth
Rotation	Clockwise/Standard
Pump Flow	High-Volume

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Speedway Motors 91605200 Details

Water Pump

Speedway's adjustable water pump is tried, tested and true. It has great flow, superior quality and standard features that are typically only available on water pumps costing twice as much. State-of-the-art aluminum casting and a precision impeller provide equal flow to both cylinder banks. If you're using a cog belt on your race car, this is the pump you want since it's adjustable. The 1/2" mount holes in this pump are larger than normal, allowing it to be moved up or down slightly to help with belt tension.

Adjustable mounting holes
High flow and pressure rates
Adjustable cam stop
Extra-thick fan hub
3/4" inch heavy duty bearing
Pressed-fit and set-screw-retained fan hub
Large-diameter shaft and reinforced housing make it ideal for oval-track applications

Learn how to choose the correct water pump for your application by reading our tech article. SBC - Short vs Long Water Pump.

Pulleys and Belts

Speedway Cast Aluminum double groove pulleys for Small Block Chevy feature a 20% reduction. Reduction pulleys have a smaller diameter which slows the speed of your fan, water pump, and alternator to reduce drag for more top-end horsepower. Plus, high RPM water pump operation is improved due to reduced fluid cavitation.

Machined from lightweight cast aluminum
Superior belt retention with extra-deep grooves
20% reduction slows accessories down for less drag
Adds top-end horsepower
Reduces water pump impeller speed below cavitation threshold
Improved high-RPM cooling capabilities
Pair of Matched Belts, 32.625" length

Get the correct pulleys for your application by learning which water pump you have as explained in our tech article. SBC - Short vs Long Water Pump.

Kit Includes

(1) Speedway Adjustable Small Block Chevy Aluminum Short Water Pump

(1) Aluminum Allen Pipe Plugs, 1/2 Inch NPT

(1) Small Block Chevy Cast Alum. Short Pump Double Groove Pulley

(1) Small Block Chevy Cast Alum. Short Pump Double Groove Lower Pulley

(1) Matched Belts for Cast Aluminum Pulleys

(1) Aluminum Lower Pulley Spacer

(1) Universal Water Pump Shim Kit

(1) Aluminum Lower Pulley Screw Kit, Fine Thread

Application

Water Pump ID Illustration (GIF)
Can also be used as a high-performance replacement on 1971-1982 Corvettes.
Water Pump ID Chart (GIF)

Charts

910-15582 Instructions (PDF)

Guides & Documents

Water Pumps Installation Instructions (91605200)

Water Pumps Installation Instructions (91015582)

Pipe Fitting Plugs Sizing Chart (6176206)

Accessory Drive Belts Technical Information (91015401)

Speedway Motors 91605200 Specifications

KEY SPECS
MFG. Part #	91605200
Brand	Speedway Motors
Water Pump Type	Mechanical
Water Pump Style	Short Depth
Rotation	Clockwise/Standard
Pump Flow	High-Volume

GENERAL
Adjustable	Yes
Belt Width	.43"
Block to Hub Distance	5.625 Inch (5-5/8")
Heater Inlet Size	1/2" NPT
Hose ID	1.83"
Shaft Length	0.86"
Pilot Shaft Diameter	0.75 Inch
Gasket(s) Included	Yes
Weight	6.25 lbs.
Sold in Quantity	Kit

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Fitment

1991-1993 Buick Roadmaster

Gen 1 L03 Small Block Chevy

1991-1992 Cadillac Brougham

1-Piece Rear Main 305 LB9

1987 Chevy Blazer

Gen 1 L03 Small Block Chevy

1976-1985 Chevy C10

Gen 1 LG3 Small Block Chevy

1986 Chevy C10

1-Piece Rear Main 305 LG4
Gen 1 LG3 Small Block Chevy

1976-1982 Chevy C10 Suburban

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy C10 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy C10 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1982-1987 Chevy C15

Gen 1 LE9 Small Block Chevy

1988 Chevy C15

Gen 1 L03 Small Block Chevy

1988-1995 Chevy C1500

Gen 1 L03 Small Block Chevy

1996 Chevy C1500

Gen 1 L03 Small Block Chevy
Vortec L30 Small Block Chevy

1997-1999 Chevy C1500

Vortec L30 Small Block Chevy

1977-1982 Chevy C20

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy C20

2-Piece Rear Main 305 LG4

1986 Chevy C20

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987 Chevy C20

Gen 1 L03 Small Block Chevy

1976-1978 Chevy C20 Suburban

Gen 1 LG3 Small Block Chevy

1979-1985 Chevy C20 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy C20 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1988-1995 Chevy C2500

Gen 1 L03 Small Block Chevy

1996 Chevy C2500

Gen 1 L03 Small Block Chevy
Vortec L30 Small Block Chevy

1997-1998 Chevy C2500

Vortec L30 Small Block Chevy

1966 Chevy C30

Gen 1 L79 Small Block Chevy

1978-1979 Chevy C30

Gen 1 LG3 Small Block Chevy

1986 Chevy C30

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1967-1968 Chevy Camaro

327 Chevy Small Block V8
Gen 1 DZ Small Block Chevy

1969 Chevy Camaro

Gen 1 DZ Small Block Chevy

1976-1982 Chevy Camaro

Gen 1 LG3 Small Block Chevy

1983-1984 Chevy Camaro

2-Piece Rear Main 305 LG4

1985 Chevy Camaro

2-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4
Gen 1 L69 Small Block Chevy

1986 Chevy Camaro

1-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4

1987-1992 Chevy Camaro

1-Piece Rear Main 305 LB9

1977 Chevy Caprice

Gen 1 LG3 Small Block Chevy

1978-1985 Chevy Caprice

2-Piece Rear Main 305 LG4

1986 Chevy Caprice

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987-1993 Chevy Caprice

Gen 1 L03 Small Block Chevy

1964-1968 Chevy Chevelle

Gen 1 L79 Small Block Chevy

1965-1968 Chevy Chevy II

Gen 1 L79 Small Block Chevy

1962-1963 Chevy Corvette

Gen 1 L76 Small Block Chevy

1964-1968 Chevy Corvette

Gen 1 L79 Small Block Chevy

1980 Chevy Corvette

Gen 1 LG3 Small Block Chevy

1964-1969 Chevy El Camino

Gen 1 L79 Small Block Chevy

1976-1982 Chevy El Camino

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy El Camino

2-Piece Rear Main 305 LG4

1986 Chevy El Camino

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987 Chevy El Camino

Gen 1 L03 Small Block Chevy

1996-2002 Chevy Express 1500

Vortec L30 Small Block Chevy

1996-2002 Chevy Express 2500

Vortec L30 Small Block Chevy

1977-1982 Chevy G10

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy G10

2-Piece Rear Main 305 LG4

1986 Chevy G10

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987-1995 Chevy G10

Gen 1 L03 Small Block Chevy

1977-1982 Chevy G20

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy G20

2-Piece Rear Main 305 LG4

1986 Chevy G20

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987-1995 Chevy G20

Gen 1 L03 Small Block Chevy

1978-1979 Chevy G30

Gen 1 LG3 Small Block Chevy

1982 Chevy G30

Gen 1 LG3 Small Block Chevy

1985 Chevy G30

2-Piece Rear Main 305 LG4

1977-1982 Chevy Impala

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy Impala

2-Piece Rear Main 305 LG4

1977-1979 Chevy K10

Gen 1 LG3 Small Block Chevy

1981-1982 Chevy K10

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy K10

2-Piece Rear Main 305 LG4

1986 Chevy K10

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1976-1982 Chevy K10 Suburban

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy K10 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy K10 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1988-1995 Chevy K1500

Gen 1 L03 Small Block Chevy

1996-1999 Chevy K1500

Vortec L30 Small Block Chevy

1977-1978 Chevy K20

Gen 1 LG3 Small Block Chevy

1980 Chevy K20

Gen 1 LG3 Small Block Chevy

1985 Chevy K20

2-Piece Rear Main 305 LG4

1977-1978 Chevy K20 Suburban

Gen 1 LG3 Small Block Chevy

1985 Chevy K20 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy K20 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1988-1995 Chevy K2500

Gen 1 L03 Small Block Chevy

1997-1998 Chevy K2500

Vortec L30 Small Block Chevy

1977-1981 Chevy K5 Blazer

Gen 1 LG3 Small Block Chevy

1982-1985 Chevy K5 Blazer

2-Piece Rear Main 305 LG4

1986 Chevy K5 Blazer

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1976 Chevy Laguna

Gen 1 LG3 Small Block Chevy

1964-1967 Chevy Malibu

Gen 1 L79 Small Block Chevy

1976-1982 Chevy Malibu

Gen 1 LG3 Small Block Chevy

1983 Chevy Malibu

2-Piece Rear Main 305 LG4

1976-1977 Chevy Monte Carlo

Gen 1 LG3 Small Block Chevy

1978-1985 Chevy Monte Carlo

2-Piece Rear Main 305 LG4

1986 Chevy Monte Carlo

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987-1988 Chevy Monte Carlo

Gen 1 L03 Small Block Chevy

1976-1979 Chevy Monza

Gen 1 LG3 Small Block Chevy

1976-1979 Chevy Nova

Gen 1 LG3 Small Block Chevy

1987 Chevy R10

Gen 1 L03 Small Block Chevy

1987 Chevy R10 Suburban

Gen 1 L03 Small Block Chevy

1987 Chevy R20

Gen 1 L03 Small Block Chevy

1987 Chevy V10

Gen 1 L03 Small Block Chevy

1963-1965 GMC 1000 Series

Gen 1 LE9 Small Block Chevy

1967-1968 GMC C15/C1500 Pickup

327 Chevy Small Block V8

1968 GMC C15/C1500 Suburban

327 Chevy Small Block V8

1963-1966 GMC G1000 Series

327 Chevy Small Block V8

1964-1966 GMC G1500

327 Chevy Small Block V8

1964-1966 GMC I1000

327 Chevy Small Block V8

1965-1966 GMC I1500

327 Chevy Small Block V8

1965-1966 GMC I2500

327 Chevy Small Block V8

1966 GMC I3500

327 Chevy Small Block V8

1970-1973 GMC Jimmy

Gen 1 LE9 Small Block Chevy

1978-1982 GMC Jimmy

Gen 1 LE9 Small Block Chevy

1987 GMC Jimmy

Gen 1 L03 Small Block Chevy

1966 GMC K1000

327 Chevy Small Block V8

1966 GMC K1000 Pickup

327 Chevy Small Block V8

1966 GMC K15/K1500 Pickup

327 Chevy Small Block V8

1960-1966 GMC Suburban

Gen 1 L69 Small Block Chevy
Gen 1 L76 Small Block Chevy

1967 GMC Suburban

Gen 1 L76 Small Block Chevy

1975-1977 Oldsmobile Starfire

305 Chevy Small Block V8

1985 Pontiac Firebird

2-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4
Gen 1 L69 Small Block Chevy