A strong SBC aluminum water pump matches your engine’s short- or long-pump setup, fits the available mounting space, and provides the shaft and pulley arrangement your build needs. This comparison suits owners replacing a small-block Chevy pump as well as builders checking options for a street or modified engine. The lineup includes long pumps with stated year and engine ranges, short pumps with distinct pilot and port details, and models that offer little fitment information.
Those differences matter: a pump that bolts to an SBC block can still be wrong for the brackets, pulleys, or hose routing on your vehicle. Start by confirming pump length and application, then compare shaft dimensions, finish, flow claims, and included hardware.
The listed specifications help narrow choices, but do not replace a fitment check against your exact engine and accessory setup.
For a stated street-use long pump, Speedway Motors Long Aluminum Pump leads this list. Its listing specifies T6 aluminum construction, a 3/4-inch bearing, and curved-vane impeller intended to distribute coolant to both sides of the block. Those details make it a strong choice when a long-style small-block Chevy pump is confirmed for your setup.
Check the pump’s dimensions and pulley alignment against your existing arrangement before ordering, since the listing does not give an engine-year range.
Our Top Picks
Best OverallIts street-use long-pump listing specifies T6 aluminum, a 3/4-inch bearing, and curved vanes designed to distribute coolant across the block.
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Broad Truck FitmentThe long design lists SBC fitment from 1969–1987 and light-duty truck V8 applications, with a chrome-plated aluminum body and gasket.
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Complete Hardware SetLists 1969–1987 SBC fitment, a 6 15/16-inch block-to-hub measurement, 3/4-inch bearing, and included shims, gaskets, and bolts.
View on Amazon- Most Detailed Short SHLPDFM Polished Short Pump
Compare These SBC Aluminum Water Pump Options
| # | Product | Material | Compatible with Vehicle Type | Weight | Buy |
|---|---|---|---|---|---|
| 1 | 1. Speedway Motors Long PumpBest Overall | Aluminum | Car | 9 lb | View on Amazon |
| 2 | 2. AULINK Chrome Long PumpBroad Truck Fitment | Aluminum | Car, Truck | 2 lb | View on Amazon |
| 3 | 3. Woosphy High-Volume Long PumpComplete Hardware Set | Aluminum | Truck | — | View on Amazon |
| 4 | 4. NEWZQ Long PumpLong-pump truck replacements | — | — | 8.8 lb | View on Amazon |
| 5 | 5. ProForm Long PumpAluminum long-pump buyers | Aluminum | Car | 8.3 lb | View on Amazon |
| 6 | 6. IMOOA Satin Long PumpSatin-finish long-pump buyers | Aluminum | Car | — | View on Amazon |
| 7 | 7. SHLPDFM Polished Short PumpMost Detailed Short | Aluminum | Car, Truck | 2.55 kg | View on Amazon |
| 8 | 8. A-Team 6-Blade PumpHigh-flow short-pump builds | Aluminum | Car | — | View on Amazon |
| 9 | 9. TAKPART Short PumpShort-pump SBC applications | — | Car | — | View on Amazon |
| 10 | 10. AULINK Zinc Green PumpBronze-impeller pump seekers | Aluminum | Truck | 3.48 kg | View on Amazon |
Detailed Reviews: Best Sbc Aluminum Water Pump

#1 · Best Overall
1. Speedway Motors Long Pump
- Material: Aluminum
- Compatible with Vehicle Type: Car
- Weight: 9 lb
Best for: Street-use long-pump owners.
Why it ranks #1: Its street-use long-pump listing specifies T6 aluminum, a 3/4-inch bearing, and curved vanes designed to distribute coolant across the block.
A curved-vane impeller is the key feature of Speedway Motors’ long aluminum water pump, with the listing stating that it promotes coolant flow, pressure, and distribution to both sides of the engine block. T6 aluminum construction and a 3/4-inch bearing further define this street-use small-block Chevy option.
The curved-vane impeller is described as distributing coolant to both sides of the block, a practical consideration for buyers prioritizing the pump’s stated cooling function. T6 aluminum is specified for the body, with strength, durability, and heat dissipation cited as material benefits. Its long design and 3/4-inch bearing help identify the setup to match during replacement planning. The supplied information does not give an engine-year range, so confirm the application requirements before choosing this pump.
- Long aluminum water pump
- T6 aluminum construction
- Curved-vane impeller
- 3/4-inch bearing
- The supplied listing does not specify an engine-year range.
Skip it if you need explicit engine-year fitment; Woosphy SBC 283 305 327 350 lists application years and a block-to-hub measurement.
This is a street-use option for a small-block Chevy owner seeking a long pump with a curved-vane impeller and T6 aluminum body. Since no year range is supplied, establish the specific application before selecting it.
Full product details
| Brand | Speedway Motors |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Includes product as described |
| Item Weight | 9 pounds |
| Manufacturer | Speedway Motors |
| Part Number | 91015590 |
| Manufacturer Warranty Description | See Return Policy |
| Material | Aluminum |
| Model Number | 91015590 |
| Weight Class | Light Weight |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: Long Aluminum Water Pump, For Small Block Chevy, 3/4" Bearing, Street Use
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#2 · Broad Truck Fitment
2. AULINK Chrome Long Pump
- Material: Aluminum
- Compatible with Vehicle Type: Car, Truck
- Weight: 2 lb
Best for: Chrome long-pump truck builds.
Why it ranks #2: The long design lists SBC fitment from 1969–1987 and light-duty truck V8 applications, with a chrome-plated aluminum body and gasket.
Chrome-plated aluminum gives the AULINK long water pump its defining finish, while the listing specifically covers Chevy SBC engines from 1969–1987 and light-duty V8 trucks from 1958–1995 with a long-pump setup. Its stated lightweight construction and included gasket support buyers comparing replacement options for those applications.
The long-pump designation and named year ranges help narrow compatibility, especially for light-duty V8 trucks, but the truck application explicitly requires a long-pump setup. Chrome-plated aluminum is identified as the construction and finish; the listing also states that the material is lightweight and dissipates heat better. A gasket is included, providing one installation item with the pump. Compare the vehicle’s engine, year, and pump arrangement with the stated coverage before ordering.
- Chrome-plated aluminum construction
- Long-pump setup specified
- Lists SBC engine and light-duty truck applications
- Includes a gasket
- Truck fitment is limited to vehicles with a long-pump setup.
Skip it if you need a short-pump design; A-Team Performance C8011C is listed as a short water pump.
This fits buyers seeking a chrome aluminum long pump for a covered SBC car or long-pump light-duty truck application. The stated years do not replace checking the existing pump arrangement, especially for truck fitment.
Full product details
| Brand | AULINK |
|---|---|
| Compatible with Vehicle Type | Car, Truck |
| Included Components | WITH GASKET |
| Item Weight | 2 pounds |
| Manufacturer | AULINK |
| Part Number | SBC 350 |
| Manufacturer Warranty Description | 1 Year or 50000 km. |
| Material | Aluminum |
| Model Number | AUWPZ127 |
Listed on Amazon as: Small Block Chrome Aluminum Long Water Pump For Chevy SBC 350 283 305 400
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#3 · Complete Hardware Set
3. Woosphy High-Volume Long Pump
- Material: Aluminum
- Compatible with Vehicle Type: Truck
Best for: Long-pump truck replacement.
Why it ranks #3: Lists 1969–1987 SBC fitment, a 6 15/16-inch block-to-hub measurement, 3/4-inch bearing, and included shims, gaskets, and bolts.
The 6 15/16-inch block-to-hub measurement identifies this Woosphy pump as a long-design replacement for specified small-block Chevy applications. Its aluminum construction and stated fitment spanning 283, 305, 327, 350, 383, and 400 engines give buyers a defined replacement option, including for listed light-duty V8 trucks.
The package includes two pulley shims, gaskets, and bolts alongside the pump, so several mounting items are supplied together for installation. A 3/4-inch bearing and 5/8-inch shaft provide concrete dimensions to compare with the existing setup, while the 6 15/16-inch block-to-hub measurement helps distinguish this long pump from a short design. Fitment is stated for the listed Chevy SBC engines from 1969–1987 and light-duty V8 trucks from 1973–1989; verify the vehicle’s configuration against those ranges.
- Aluminum pump construction
- 6 15/16-inch block-to-hub measurement specified
- 3/4-inch bearing and 5/8-inch shaft
- Includes two pulley shims, gaskets, and bolts
- Long-design fitment limits it to setups matching its stated dimensions.
Skip it if you need a short-design pump; TAKPART TKUS-10444 is specifically listed as a short water pump.
For owners replacing a long pump on a listed Chevy SBC or light-duty V8 truck, the supplied shims, gaskets, and bolts are useful. Check the 6 15/16-inch measurement and application years before selecting it.
Full product details
| Brand | Woosphy |
|---|---|
| Compatible with Vehicle Type | Truck |
| Included Components | High Volume Flow Chrome Aluminum Long Water Pump |
| Manufacturer | Woosphy |
| Part Number | SBC 283 305 327 350 |
| Material | Aluminum |
| Model Number | SBC 283 305 327 350 |
Listed on Amazon as: High Volume Flow Chrome Aluminum Long Water Pump Replacement for Chevy SBC
View on AmazonWhy it ranks #4: Its long-pump listing gives the same useful 6 15/16-inch block-to-hub measurement and 3/4-inch bearing, with shims, gaskets, and bolts.
NEWZQ lists a 6 15/16-inch block-to-hub measurement for this aluminum long water pump, giving buyers a specific dimension to compare with a Chevy truck’s existing setup. Its stated coverage includes SBC 283, 305, 327, 350, 383, and 400 engines and light-duty V8 trucks within the listed year ranges.
The specified 6 15/16-inch block-to-hub measurement helps distinguish this long pump during replacement planning, while the 3/4-inch bearing and 5/8-inch shaft add further comparison points. The package includes two pulley shims, gaskets, and bolts, reducing the number of mounting items that need to be sourced separately. Stated applications cover Chevy SBC engines from 1969–1987 and light-duty V8 trucks from 1973–1989. Match both the vehicle year and pump dimensions before installation.
- Aluminum long water pump
- 6 15/16-inch block-to-hub measurement
- 3/4-inch bearing with 5/8-inch shaft
- Includes shims, gaskets, and bolts
- Its listed fitment is limited to specified Chevy engine and truck applications.
Skip it if you need a short-pump arrangement; SHLPDFM SHU00412 is listed as a polished short water pump.
For a Chevy SBC or light-duty truck using the listed long-pump arrangement, NEWZQ supplies useful dimensions and mounting pieces in one package. Check the stated years, bearing, shaft, and block-to-hub measurement against the existing pump.
Full product details
| Brand | NEWZQ |
|---|---|
| Item Weight | 8.8 pounds |
| Item model number | 416579 1969-1989 |
| Manufacturer | NEWZQ |
| Part Number | 416579 1969-1989 |
| Model | 416579 1969-1989 |
| Package Dimensions | 11.81 x 8.07 x 7.87 inches |
Listed on Amazon as: Aluminum Water Pump Replacement for Chevy Light Duty Trucks V8 1973-1989
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#5
5. ProForm Long Pump
- Material: Aluminum
- Compatible with Vehicle Type: Car
- Weight: 8.3 lb
Best for: Aluminum long-pump buyers.
Why it ranks #5: A mechanical aluminum long-design pump specifically listed for Small Block Chevy, though the supplied details do not give an engine-year range.
ProForm specifies a mechanical long-design water pump in aluminum for small-block Chevy applications, giving buyers a clearly identified replacement style and material. Its vehicle-specific fit type is relevant when matching a pump to a car, while the listing’s compact description leaves the exact dimensions and engine-year range unspecified.
The long design is the central fit consideration: it separates this pump from short-design options when a vehicle uses a long-pump arrangement. Aluminum construction identifies the pump material, and the mechanical designation identifies its operating type. ProForm lists the fit as vehicle specific, so buyers should match the application to their car rather than infer a year range from the broad small-block Chevy description. The package information says components are per item description, without naming the included mounting hardware.
- Long-design mechanical pump
- Aluminum construction
- Listed for small-block Chevy
- Vehicle-specific fit type
- The supplied listing gives no engine-year range or pump dimensions.
Skip it if you need a stated engine-year range or included mounting hardware; Woosphy lists both application years and mounting components.
This suits a small-block Chevy owner seeking an aluminum mechanical long-design pump for a vehicle-specific application. The listing does not provide dimensions or a year range, so it is best for buyers who can verify the specific fitment.
Full product details
| Brand | ProForm |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Per Item Description |
| Item Weight | 8.3 pounds |
| Manufacturer | Proform |
| Part Number | 67265 |
| Manufacturer Warranty Description | 1 Year Limited Warranty |
| Material | Aluminum |
| Model Number | 67265 |
Listed on Amazon as: ProForm-PFM67265 Water Pump, Mechanical, Long Design, Aluminum, Natural, Small Block Chevy, Each
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#6
6. IMOOA Satin Long Pump
- Material: Aluminum
- Compatible with Vehicle Type: Car
Best for: Satin-finish long-pump buyers.
Why it ranks #6: Fits listed Chevy small-block 283, 327, 350, 383, and 400 engines from 1958–1985, and specifies a 5/8-inch pilot and clockwise rotation.
A satin-finished billet-aluminum body distinguishes the IMOOA long water pump while keeping its stated fitment centered on Chevy small-block 283, 327, 350, 383, and 400 engines from 1958–1985. Its standard clockwise rotation and 5/8-inch pilot shaft give buyers two concrete setup details to compare before choosing a replacement.
The 5/8-inch pilot shaft and standard clockwise rotation make this listing more informative for matching a pump to an existing small-block setup than a description that only states the engine family. Its long-design format is specified in the title, while the satin billet-aluminum construction identifies the material and finish. Mounting hardware is included, which can reduce the need to source those items separately. Confirm that the vehicle’s pump arrangement and engine year align with the stated 1958–1985 application range.
- Satin-finish billet-aluminum construction
- Long-design pump
- 5/8-inch pilot shaft
- Includes mounting hardware
- No specific hardware list or dimensions beyond the pilot shaft are provided.
Skip it if you need a stated 6 15/16-inch block-to-hub measurement; NEWZQ 416579 1969-1989 provides that dimension.
Consider it for a Chevy small-block owner who wants a satin long pump with clockwise rotation and supplied mounting hardware. Its stated years and 5/8-inch pilot are the key boundaries to check against the existing setup.
Full product details
| Brand | IMOOA |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Water Pump |
| Manufacturer | IMOOA |
| Part Number | MTD0131 |
| Material | Aluminum |
| Model Number | S00112 |
Listed on Amazon as: Long Water Pump for Chevy SBC 283 327 350 383 400 1958-1985 Satin
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#7 · Most Detailed Short
7. SHLPDFM Polished Short Pump
- Material: Aluminum
- Compatible with Vehicle Type: Car, Truck
- Weight: 2.55 kg
Best for: Polished short-pump SBC builds.
Why it ranks #7: Clearly identifies a short pump with a 5/8-inch pilot, 1/2-inch NPT side port, dual-bolt-pattern flange, and listed fitment through 1985.
SHLPDFM specifies up to 40% more coolant flow than stock for this polished aluminum short pump, giving buyers a stated high-volume option for compatible small-block Chevy applications. A 5/8-inch pilot, 1/2-inch NPT side port, and dual-bolt-pattern pulley flange add practical setup details beyond its finish.
The short-pump design is listed for several older Chevy applications, including passenger cars, Corvettes, and light-duty trucks, with the description also stating fit across small-block Chevy blocks through 1985. Its 5/8-inch pilot and dual-bolt-pattern pulley flange provide useful dimensions and pulley-mounting information when planning a replacement. The 1/2-inch NPT side port is another specific connection detail to compare with the existing setup. The stated flow increase is up to 40% over stock, not a guarantee for every installation.
- Polished aluminum construction
- Short-pump design
- Up to 40% more coolant flow than stock stated
- 5/8-inch pilot, 1/2-inch NPT side port, and dual-bolt-pattern flange
- The high-flow figure is stated as up to 40%, not a guaranteed result for every setup.
Skip it if you need a long-pump design; AULINK AUWPZ127 is explicitly listed for long-pump setups.
For a small-block Chevy build calling for a polished short pump, this model provides specific pilot, port, and pulley-flange details. Confirm that the short design and connection dimensions suit the existing installation.
Full product details
| Brand | SHLPDFM |
|---|---|
| Compatible with Vehicle Type | Car, Truck |
| Item Weight | 2.55 kg |
| Manufacturer | SHLPDFM |
| Part Number | SHU00412 |
| Material | Aluminum |
| Model Number | SHU00412 |
| Weight Class | Heavy Weight |
Listed on Amazon as: 1 SET SHLPDFM Polished High Volume Aluminum Short Water Pump Fits for Small Block Chevy SBC 283 327 350 383 400 V8 1955-1985
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#8
8. A-Team 6-Blade Pump
- Material: Aluminum
- Compatible with Vehicle Type: Car
Best for: High-flow short-pump builds.
Why it ranks #8: The short, 5/8-inch-shaft aluminum pump lists compatibility with Chevrolet small-block 265–400-cubic-inch engines and a six-blade impeller.
A-Team Performance states up to 40% more flow than stock for this aluminum short water pump, positioning it for small-block Chevrolet owners seeking a high-flow replacement. Its 5/8-inch shaft and six-blade cast-aluminum anti-cavitation impeller provide concrete design details, while compatibility is listed across Chevrolet small-block V8 Gen I engines.
The short-pump format is an important fit boundary for buyers replacing an existing unit, and the 5/8-inch shaft gives another dimension to compare. The six-blade cast-aluminum anti-cavitation impeller is specified as part of the design, while the listing’s up-to-40% flow statement frames its high-flow intent. Compatibility is described broadly as Chevrolet small-block V8 Gen I, with the title naming 265–400 cubic-inch engines. Verify the pump arrangement and shaft requirements for the specific application.
- Short water pump
- Up to 40% increased flow stated
- Six-blade cast-aluminum anti-cavitation impeller
- 5/8-inch shaft
- Short-pump design will not match a long-pump arrangement.
Skip it if you need a long-pump arrangement; Speedway Motors 91015590 is listed as a long aluminum water pump.
This suits a small-block Chevrolet owner seeking a high-flow short pump with a specified six-blade impeller and 5/8-inch shaft. Its short design is the crucial boundary; confirm that the vehicle uses this arrangement.
Full product details
| Brand | A-Team Performance |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | 6-Blade Aluminum Water Pum |
| Manufacturer | A-Team |
| Part Number | C8011C |
| Material | Aluminum |
| Model Number | C8011C |
| Weight Class | Heavy Weight |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov |
Listed on Amazon as: A-Team Performance 6-Blade Aluminum Water Pump – 5-5/8 in H, 5/8 in Shaft High-Volume Pump – Compatible with Small Block Chevrolet 265-400 Ci Engines
View on AmazonWhy it ranks #9: A specifically identified short pump for 1955–1985 Chevy 305, 327, and 350 applications, supplied with shims, gaskets, and a pipe plug.
TAKPART identifies this as a high-volume aluminum short water pump, making pump length the first fit decision for Chevy 305, 327, and 350 engines in the stated 1955–1985 range. Its package includes pulley shims, block gaskets, and a pipe plug, supplying several installation-related parts with the pump.
The short-design specification helps buyers distinguish this pump from long-design replacements before planning installation. Its stated engine coverage is Chevy 305, 327, and 350 applications from 1955–1985, so the year and engine should both be checked against the vehicle. Two pulley shims, gaskets for mounting to the block, and a pipe plug are included, making the package more complete for the described setup. No instructions are included, and the listing recommends professional installation.
- Short-design aluminum water pump
- Listed for Chevy 305, 327, and 350 engines
- Includes two pulley shims
- Includes block gaskets and a pipe plug
- No instructions are included; professional installation is recommended.
Skip it if you need a long-design pump; IMOOA S00112 is explicitly listed as a long water pump.
This is a candidate for owners whose 305, 327, or 350 setup specifically calls for a short pump. Its included shims, gaskets, and pipe plug are useful, but the lack of instructions favors buyers prepared for professional installation.
Full product details
| Brand | TAKPART |
|---|---|
| Compatible with Vehicle Type | Car |
| Manufacturer | TAKPART |
| Part Number | TKUS-10444 |
| Model Number | TKUS-10444 |
Listed on Amazon as: SBC 350 High Volume Aluminum Short Water Pump Compatible with 1955-1985 Chevy 305 327 350 engine
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#10
10. AULINK Zinc Green Pump
- Material: Aluminum
- Compatible with Vehicle Type: Truck
- Weight: 3.48 kg
Best for: Bronze-impeller pump seekers.
Why it ranks #10: The listing identifies an aluminum pump and includes a gasket and bolt, but does not specify short or long design or SBC engine fitment.
A bronze impeller is the defining listed component of this AULINK water pump, paired with a C&U bearing in the product title. Its aluminum material and Chevy GM truck compatibility make it a potential replacement to investigate for truck owners, though the supplied listing does not specify an engine family or year range.
The product information identifies a bronze impeller and C&U bearing, giving buyers two named components to consider when comparing water pumps. Aluminum is the stated material, and truck is the listed compatible vehicle type. The included components are a water pump, gasket, and bolt, so some mounting parts come with the unit. Because no engine family, model years, pump length, or rotation are supplied, buyers need application details beyond this listing to establish whether it matches a specific Chevy GM truck.
- Bronze impeller specified
- C&U bearing identified
- Aluminum material listed
- Includes gasket and bolt
- No engine family, year range, or pump-length specification is supplied.
Skip it if you need a stated SBC engine range and pump length; IMOOA S00112 lists both a long design and engine years.
This may suit a truck owner comparing a pump with a bronze impeller and C&U bearing, but the supplied facts leave key fit details open. Establish the engine, year, and pump arrangement before treating it as a replacement.
Full product details
| Brand | AULINK |
|---|---|
| Compatible with Vehicle Type | Truck |
| Included Components | water pump,gasket,bolt |
| Item Weight | 3.48 kg |
| Manufacturer | AULINK |
| Part Number | AUWPY161 |
| Manufacturer Warranty Description | 1 Year or 50000 km. |
| Material | Aluminum |
| Model Number | AUWPY161 |
Listed on Amazon as: Water Pump (C&U Bearing,Bronze Impeller,ZINC GREEN) For Chevy GM
View on AmazonWhy short-versus-long fitment is the first check
Confirm whether your SBC needs a short or long pump before comparing finishes or flow claims. This set includes explicit long designs from Woosphy, ProForm, IMOOA, NEWZQ, AULINK, and Speedway Motors, while TAKPART and SHLPDFM are explicitly short pumps. The listings show why engine family alone is not enough: SHLPDFM says its short pump fits small-block Chevy blocks through 1985, while Woosphy identifies a long pump with a 6 15/16-inch block-to-hub measurement.
A mismatch can put the pulley in the wrong position relative to the brackets and belt path, even if the block and engine family appear compatible. Compare the existing pump’s mounting-to-hub position and accessory arrangement with the replacement details, and check the vehicle-specific application.
Several listings omit full dimensional drawings, so request or verify measurements when your setup has been modified.
High-flow claims do not replace system checks
A higher-flow claim does not by itself confirm that a pump suits your cooling system or belt drive. SHLPDFM claims flow up to 40% more than stock, and A-Team also lists a 40% increased-flow claim; A-Team describes a six-blade cast-aluminum anti-cavitation impeller. Speedway Motors instead describes curved impeller vanes intended to distribute coolant to both sides of the block.
These are different listed design details, not comparative test results, so they should not be treated as proof that one pump cools better in every engine. Before choosing a high-volume model, consider the rest of the cooling setup and check that the pump matches your intended rotation and pulley arrangement.
IMOOA specifically lists standard clockwise rotation, while several other listings do not state rotation. If rotation or system requirements are uncertain, verify them against the engine and pump manufacturer information before installation.
How to Choose an SBC Aluminum Water Pump
Short or long pump design
Choose a pump whose short or long design matches your engine’s existing accessory layout. This list spans explicit short and long options: TAKPART and SHLPDFM are short, while Woosphy, ProForm, IMOOA, NEWZQ, AULINK Chrome, and Speedway Motors are long. SHLPDFM lists a 5/8-inch pilot and 1/2-inch NPT side port; Woosphy gives a 6 15/16-inch block-to-hub measurement for its long pump.
The exact pump length matters because it affects pulley position and belt alignment. Buyers replacing an unchanged stock-style arrangement should match the existing design and measurements; builders with a confirmed long-pump setup can compare the long models.
If the engine has altered brackets or pulleys, verify dimensions rather than relying on engine family alone.
Engine and vehicle fitment
Look for a listed application that covers your engine and vehicle rather than relying only on the phrase small-block Chevy. IMOOA names 283, 327, 350, 383, and 400 engines from 1958–1985; Woosphy lists 283, 305, 327, 350, 383, and 400 from 1969–1987, plus light-duty truck V8s from 1973–AULINK Chrome lists SBC applications from 1969–1987 and light-duty truck V8s from 1958–1995.
Buyers whose engine falls within a stated range have more direct evidence to check; those with a year or configuration outside it should confirm fitment with the seller or manufacturer. Also distinguish the short-pump applications from long-pump listings before treating a broad engine range as a match.
Shaft, bearing, and included hardware
Compare shaft and bearing details with your pulley and installation requirements, then check what hardware is supplied. Woosphy and NEWZQ list a 3/4-inch bearing and 5/8-inch shaft, while IMOOA and SHLPDFM specify a 5/8-inch pilot. Speedway Motors lists a 3/4-inch bearing.
Hardware also varies: Woosphy and NEWZQ include pulley shims, gaskets, and bolts; TAKPART lists shims, gaskets, and a pipe plug; IMOOA says mounting hardware is included. Buyers wanting stated shaft and bearing dimensions should favor pumps that provide them, while anyone reusing existing hardware should still confirm compatibility.
Do not assume a pilot measurement and a shaft measurement describe interchangeable features; compare the terminology and dimensions with your pulley.
Which SBC aluminum water pump should I choose?
For a confirmed long-pump street setup, start with Speedway Motors Long Pump: it specifies T6 aluminum, a 3/4-inch bearing, and curved vanes. Choose AULINK Chrome Long Pump if you need a listed long-style application covering SBC engines and light-duty truck V8s, or Woosphy High-Volume Long Pump if the 6 15/16-inch block-to-hub measurement and included shims, gaskets, and bolts suit your installation. NEWZQ Long Pump lists similar dimensions and hardware.
For a clearly identified short setup with detailed port and flange information, consider SHLPDFM Polished Short Pump; TAKPART Short Pump is another specified short option. Buyers who prioritize an explicitly stated engine range and clockwise rotation can check IMOOA Satin Long Pump.
Confirm exact dimensions, rotation, and pulley alignment before ordering.
Related Buying Guides
Frequently Asked Questions
How can I tell whether my SBC uses a short or long water pump?
Compare the installed pump’s mounting depth and block-to-hub distance with the replacement listing, and check how the pulley sits relative to the other pulleys. Confirm the engine’s existing accessory arrangement, too. If those details are unclear, identify the current pump before ordering rather than relying on engine family alone.
What should I check to confirm pulley and accessory-bracket alignment?
Check that the replacement pump’s hub places the pulley in the same plane as the crankshaft and other accessory pulleys. Compare mounting points, pump depth, and pulley position with your current setup, and verify bracket fit. The listing may not provide every dimension, so confirm measurements before purchase.
Can a high-volume water pump cause cooling or belt-drive problems?
It can be a poor match if its flow or fit does not suit the engine and cooling system, and pulley misalignment can create belt-drive problems. High-volume labeling alone does not confirm compatibility. Verify pump dimensions, rotation, pulley alignment, and the requirements of your setup before choosing one.
Why should I verify pump rotation before ordering?
Pump rotation must match the direction required by the engine’s belt arrangement. Do not infer it from the pump’s appearance or from another listing; confirm the specification for the exact pump and compare it with your current setup. If the listing does not state rotation, ask the seller before ordering.
Which measurements and included parts should I compare between listings?
Compare the block-to-hub distance, mounting dimensions, and pulley position with your existing arrangement. Also check whether the listing identifies included shims, gaskets, or bolts and whether those suit your installation. Listings differ in detail, so do not assume that hardware or dimensions transfer between pump styles.
Final Words
For a confirmed long-pump street setup, start with the Speedway Motors Long Pump, whose listing specifies T6 aluminum, a 3/4-inch bearing, and curved vanes. Consider AULINK or Woosphy if their stated long-pump applications or included hardware suit your needs. For short-pump arrangements, compare SHLPDFM and TAKPART.
Before ordering any option, verify pump dimensions, rotation, and pulley alignment against your existing setup.




