Water Pumps

For over 25+ years, Stewart has focused on the development and production of high performance water pumps, resulting in innovations like special high-strength castings, larger flow passages, more efficient impellers, and stronger bearings. Every Stewart pump is hand-assembled. Stewart water pumps are the #1 choice of professional engine builders, race teams and performance enthusiasts, from street rodding and OEM replacement, to the most extreme forms of motorsports in the world.

• Small Block Chevy cast iron short water pump
• 5/8" shaft and 3/4" bearing
• Precision ground dual pattern fan hub for perfect pulley alignment
• High flow at lower RPM's for better cooling
• Compatible with stock lines and brackets, but are internally modified for performance and reliability!
• This pump is recommended for stock, OEM, or mild performance applications

For over 25+ years, Stewart has focused on the development and production of high performance water pumps, resulting in innovations like special high-strength castings, larger flow passages, more efficient impellers, and stronger bearings. Every Stewart pump is hand-assembled. Stewart water pumps are the #1 choice of professional engine builders, race teams and performance enthusiasts, from street rodding and OEM replacement, to the most extreme forms of motorsports in the world.

• Small block Chevy cast iron short water pump
• 3/4" shaft and 3/4" bearing
• Precision ground dual pattern fan hub for perfect pulley alignment
• High flow at lower RPM's for better cooling
• Compatible with stock lines and brackets, but are internally modified for performance and reliability!
• This pump is recommended for stock, OEM, or mild performance applications

• Small Block Chevy Hi-Volume Short Water Pump
• Satin Finish
• CNC - machined iron impeller
• Ribbed aluminum housing
• Heavy-Duty ball/roller bearing assembly
• Flows up to 35% more coolant than your standard pump

This aluminum version of "Corvette style" water pump was originally used on 1971-82 small block Chevrolet Corvettes but is now used throughout the motorsports industry. Pump is built using all new components and an aluminum body for added weight savings over original cast iron pumps.

• Small Block Chevy Corvette style water pump 1971-82
• Features a 3/4" main shaft and bearings with a 3/4" pilot
• Billet steel hub has a set screw retainer for use on higher RPM applications
• Block mount to fan hub dimension is 5-13/16"
• Water pump may need to be clearanced for use with 8" dampers

For over 25+ years, Stewart has focused on the development and production of high performance water pumps, resulting in innovations like special high-strength castings, larger flow passages, more efficient impellers, and stronger bearings. Every Stewart pump is hand-assembled. Stewart water pumps are the #1 choice of professional engine builders, race teams and performance enthusiasts, from street rodding and OEM replacement, to the most extreme forms of motorsports in the world.

• Small Block Chevy aluminum short water pump
• 5/8" shaft and 3/4" bearing
• Equal flow to left and right cylinder heads
• High flow and pressure
• 356-T6 heat treated aluminum specially ribbed casting
• Precision ground fan hub with dual bolt pattern
• Zinc-plated rear cover and bolts with two 1/2" NPT auxiliary inlets
• Machined for cam stop bolt (3/8-24)
• Casting has extra material between the mounting holes to allow external pressure lines to be added
• Note: Stage 2 Small Block Chevy Short water pumps MUST use our High Flow modified thermostat

For over 25+ years, Stewart has focused on the development and production of high performance water pumps, resulting in innovations like special high-strength castings, larger flow passages, more efficient impellers, and stronger bearings. Every Stewart pump is hand-assembled. Stewart water pumps are the #1 choice of professional engine builders, race teams and performance enthusiasts, from street rodding and OEM replacement, to the most extreme forms of motorsports in the world.

• Small Block Chevy aluminum short water pump
• 3/4" shaft and 3/4" bearing
• Equal flow to left and right cylinder heads
• High flow and pressure
• 356-T6 heat treated aluminum specially ribbed casting
• Precision ground fan hub with dual bolt pattern
• Zinc-plated rear cover and bolts with two 1/2" NPT auxiliary inlets
• Machined for cam stop bolt (3/8-24)
• Casting has extra material between the mounting holes to allow external pressure lines to be added
• Note: Stage 2 Small Block Chevy Short water pumps MUST use our High Flow modified thermostat

• CAD-developed for today's high-performance engines
• 1-1/2" inlet fitting
• Two 3/4" NPT outlets
• Cast swept 6-vane impeller
• Designed for engines up to 700 HP
• Indestructible welded tang drive
• Mechanical ceramic seal

• 1955-68 Short Design Design, 5/8" Shaft
• Aluminum construction
• Reinforced housing for extra strength
• Lightweight, low drag impeller adds 14HP @ 7,500 RPM
• Includes integral cam stop boss
• Overall length of 5.603" from rear mounting face to hub face
• Spacer Kit No. 63510 converts this 63500 pump to '69-later "long" design

• Water pump spacer kit
• Small Block & 90° V6 Chevy
• Converts "short" 1968-earlier design Chevrolet water pumps to longer, 1969-later design
• Includes special heat-treated bolts & gaskets
• Fits Moroso 63500 & 63505 water pumps