Page 71 - 2018 Allstar Performance Parts and Equipment Catalog

Fan Spacer Kits Aluminum SB Chevy COOLING
Fan spacers position fan closer to radiator or fan “Corvette Style”
shroud and away from pulleys. 1-1/2" and larger Water Pumps
spacers are uniquely designed allowing
spacer to remain bolted to water pump This aluminum version of ALL31105
while changing fans. Aluminum spacers “Corvette style” water pump was ALL31106
include reducer bushing, four Allen bolts originally used on 1971-82 small
to secure spacer to water pump and four hex bolts with block Chevrolet Corvette, but is
washers to secure fan to spacer. Spacers work with 1-3/4" now used throughout the motor-
bolt circle flanges only. Note: ALL30180 and ALL30182 sports industry. Pump is built
include one set of four Allen bolts only. using all new components and
an aluminum body for added
ALL30180 ..... 1/2" ALL30186...... 2" weight savings over original cast
ALL30182 ..... 1" ALL30188 ..... 2-1/2" iron pumps. Pump features a 3/4" main shaft and bearings
ALL30184 ..... 1-1/2" ALL30190...... 3" with a 3/4" pilot and a billet steel hub that has a set screw
ALL30192 ..... 3-1/2" retainer for use on higher RPM applications. Block mount
ALL99027 ..... Replacement Reducer Bushing (5/8" to 3/4") to fan hub dimension is 5-13/16".
Note: ALL30180 and ALL30182 include one set of four Allen bolts only.
ALL31105 ..... Water Pump
Fan Freewheeler ALL30078 ALL31106 ..... Water Pump With 3/8"NPT Bypass Ports And
Cam Stop Hardware
Lets the fan “freewheel” when extra Note: Water pumps may need to be clearanced for use with 8" dampers.
horsepower is needed for qualifying.
Removal of one through-bolt disengages Water Pump Spacer Kits
the fan. Fits 3/4" shafts and spaces the Kits provide additional clearance needed for belt or gear
fan 2.375" from the water pump.
drive timing systems. Gaskets are included. ALL31072
Replacement Parts ALL31070 ..... 1/8"
ALL99026 ..... Replacement Bushing ALL31071 ..... 1/4"
ALL31072 ..... 3/8"
Aluminum SB Chevy ALL31073 ..... 1/2"
“Short Style” ALL87230 ..... Replacement Gaskets
Water Pump ALL31100 Pulley Shim Kits
Popular “short style” water Use shim kits to properly align pulleys.
pump that was originally used on Water pump shims have dual bolt hole ALL31064
pre-1969 small block Chevrolets. pattern to fit most GM and Ford
Pumps are built using all new components water pumps. Crank pulley spacers
and an aluminum body for added weight savings over are for small block Chevys.
original cast iron pumps. Pump features a 3/4" main shaft ALL31066
and bearings with a 5/8" pilot and a billet steel hub drilled ALL31064 ..... Water Pump, 1/16", 1/16", 1/8" (3 Shims)
for both small and large fan bolt patterns making this a ALL31066 ..... Crankshaft, 1/16", 5/64", 1/8" (3 Shims)
good choice for street and mild performance vehicles. Aluminum SB Chevy
Block mount to fan hub dimension is 5-5/8". This pump
is not recommended for use with mechanical fans Reduction Pulleys
over 5,000 RPM. Above this RPM, use the ALL31105 Specifically for short or Corvette
pump with a 3/4" shaft/bearing. water pumps, pulleys work with ALL31040 ALL31030
power steering pump and pulley to provide a ratio within
Note: Water pump may need to be clearanced for use with 8" dampers.
the GM specified RPM range. Race engine RPM differs
greatly from street engines. For 30% less water pump
speed and reduced weight and inertia, the crankshaft and
water pump pulleys are smaller in diameter than standard
reduction pulleys. Acceleration capabilities are greatly
enhanced.
ALL31030 ...Crankshaft Pulley (4-3/4" Diameter)
ALL31040 ...Water Pump Pulley, Short Pump With 5/8" Pilot Hole
(6-5/8" Dia.)
ALL31050 ...Water Pump Pulley, Corvette Pump With 3/4" Pilot
Hole (6-5/8" Dia.) Belts
ALL86120 ....Belt, Crank To Water Pump, 31.5"
ALL86122....Belt, Crank/Water Pump/Block Mount P/S Pump, 39"
ALL86124 ....Belt, Crank/Water Pump/Head Mount P/S Pump, 42"
Jamie Lomax Photo: John Berglund Note: Crankshaft pulley will work with either water pump pulley without spacers.

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