Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Products

Shop Moroso Products At Speedway Motors

Moroso Performance Products is one of the worlds most respected suppliers of automotive equipment for racing and street performance applications. Moroso manufactures over 3000 products, from oil pans and oiling systems to ignition components and suspension equipment and numerous other performance parts. The company has an impressive list of customers, ranging from grass-roots racers to top level NASCAR Sprint Cup and NHRA/IHRA race team.

Featured Products
  • Moroso 46190 Press-In Wheel Studs, 1/2-20 x 3 Inch, .685 Inch Diameter
    Moroso 46190 Press-In Wheel Studs, 1/2-20 x 3 Inch, .685 Inch Diameter
    (Part #54546190)
    x
                
    These wheel studs manufactured from Moroso are made of a high strength steel. Their press-in design makes them stronger than stock. These wheel studs are sold in sets of 5.
    • Exceeds sanctioning bodies requirements on the use of extra-long wheel studs with thick-hub racing wheels
    • Manufacturing from high grade SAE 8740 steel to withstand sheet loads of 190,000 psi (which exceeds Grade 8 specifications)
    • 5 per package
    • Made in the U.S.A.
    • All stud lengths are measured from the base of the knurl to the end of the stud.
    • 0.685" knurl dia. for standard hole size 0.676" to 0.683"
    • Works great with Currie 9+ Axles
    • Fits most Chrysler rears with 1⁄2" stud
  • Moroso 74100 Battery Disconnect Switch
    $35.99
    $42.30
    Moroso 74100 Battery Disconnect Switch
    (Part #54574100)
    x
                

    This battery disconnect switch from Moroso Performance is easy to install and is required by many sanctioning bodies. With a quick twist of the non-slip handle shuts off all electrical current to the electrical fuel pump, electric water pump, and ignition.

    • Easy to install Disconnect Switch required by many sanctioning bodies
    • A quick twist of the non-slip handle shuts off all electrical current to the electric fuel pump, electric water pump, ignition, instruments, etc.
    • For drag racing vehicles, the switch should be mounted on the vehicle's rear panel for easy accessibility
    • Use Push/Pull Switch Kit No 74105 for remote installation
    • 2-3/8" Studs included
    • Drag Race applications without alternators
    • Rating: 125 amps @ 6-36 volts DC

    Assembly Instructions (PDF)

     

     

  • Moroso 35500 Ceramic Engine Seal - 1 Pint
    Moroso 35500 Ceramic Engine Seal - 1 Pint
    (Part #54535500)
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    Moroso ceramic engine seal coats and seals radiators and cooling systems. Seals minor cracks in engine head and block.

    • The best Chemical Sealer you can buy to stop cooling system leaks
    • Works equally well in aluminum or cast iron blocks
    • Cooling system must be thoroughly clean before use
    • Does not work with antifreeze
    • If this doesn't stop the leaks, find yourself a welder!
  • Moroso Performance 62600 Solid Transmission Mount
    Moroso Performance 62600 Solid Transmission Mount
    (Part #54562600)
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    This solid transmission mount from Moroso Performance must be used in conjunction with Solid Motor Mounts to prevent breakage of engine block and transmission case to torsional stress. This sturdy mount is made from 3/16" steel and features slotted holes on top for transmission mounting and threaded nuts welded to bottom for cross member mounting.

    • Replaces stock OEM-style soft rubber mount to eliminate linkage binding, driveline misalignment, and unwanted transmission movement
    • Black Zinc Finish
    • Steel Construction
    • Sold Each

    Fits:

    • 1958-'88 Chevy with Powerglide
    • TH-350 and TH-400
    • All Borg-Warner, Muncie, Saginaw, Chrysler 4-speed and Doug Nash 5-speed Transmissions, except 1982-'92 Camaro and Firebird

     

  • Moroso 63420 Manifold Filler Neck
    Moroso 63420 Manifold Filler Neck
    (Part #54563420)
    x
                

    Makes manifold the highest filling point.  For cooling problems where radiator is mounted low. Fits both right or left applications. Sender mount. Fits GM V8, 90° V6.

    • Locates filler neck at highest point on cars with low-mount radiators to bleed off air
    • Unit can be flipped 180° for either right or left outlet location
    • Includes 1/2" NPT fitting for installing water temperature sending unit and two 1/4" NPT fittings for return lines on popular aftermarket cylinder heads
    • Made of 356-T6 cast aluminum; 3-1/4" high
    • Includes gaskets, bolts and washers, and standard size radiator cap filler neck
    • Cap is NOT included

     

  • U-Joint Girdle
    $39.99
    U-Joint Girdle
    (Part #7158580)
    x
                

    Use aluminum girdles for added strength or replacement for 715-3250. Fits Ford 9" small yoke rear axles. 

    • Bolts are 1/4" x 2"
    • Measures 1-1/2" center to center
    • Fits 1-1/16" diameter U-joint caps
  • Moroso 63910 Vacuum Pump Mounting Bracket for Big Block and Small Block Chevy
    New
    Moroso 63910 Vacuum Pump Mounting Bracket for Big Block and Small Block Chevy
    (Part #54563910)
    x
                

    This vacuum pump mounting bracket from Moroso mounts to the driver or passenger side on your small and big block Chevy using a front motorplate. This bracket is constructed of billet aluminum.

    • Vacuum pump mounting bracket mounts to driver or passenger side cylinder heads on a SBC or BBC or to any engine using a front Motorplate
    • Mounts to driver or passenger side cylinder heads on a SBC or BBC
    • Bracket is machined from Billet Aluminum
    • Has a black anodized finish for looks and durability

    Installation Instructions (PDF)

     

     

     

     

  • Moroso 63846 Small Block Ford Mandrel Drive Kit
    Moroso 63846 Small Block Ford Mandrel Drive Kit
    (Part #54563846)
    x
                

    This mandrel drive kit is just the ticket if you are running a S/B Ford with a belt drive pump. Includes a 16 tooth Gilmer pulley, 2-1/2" v-belt pulley and required spacers to work with most combinations. Fits balancers with a 2.11, I.D. and 3 or 4 bolt pattern with pulleys.

    • Fits Small Block Ford 302-351W with either three or four mounting bolts
    • 3.30" bolt circle, 2.432" male register—will NOT fit 289
    • Hub mounted to harmonic balancer
    • Pulleys are 6061-T6 aluminum and hard coat anodized for exceptional strength and extended service life

    Includes: 2-1/2" V-belt pulley for vacuum pump, 1" (16-tooth) Gilmer pulley for external oil pump, guide plates, assorted spacers, belt guides and hardware.

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  • Moroso 23961 Oil Pan Scavenge Screens
    Moroso 23961 Oil Pan Scavenge Screens
    (Part #54523961)
    x
                

    Screws right into port fittings in your oil pan. Helps to keep debris from damaging your expensive oil pump. -12 port fittings x-12 AN.

    • Traps metal chips and debris before reaching external or dry sump oil pumps, or rear end lube pumps
    • 304 stainless steel screen uses .015" diameter, 16 mesh wire
    • Easily removed for cleaning

     

  • Moroso 62520 Mopar Solid Motor Mounts
    Moroso 62520 Mopar Solid Motor Mounts
    (Part #54562520)
    x
                These Chrysler solid motor mounts fits Mopar V8, replaces OEM 2536121.
            
  • Moroso Spark Plug Wires, Over Valves, Socket Cap, Ready-To-Install
    Moroso Spark Plug Wires, Over Valves, Socket Cap, Ready-To-Install
    (Part #91064305)
    x
                If you have ever tried to put plug wires together yourself, you know how fustrating it can be. These pre-assembled Moroso 8mm spiral core wires are fiberglass reinforced with a silicone outer layer. Wires have 90° boots on both ends. Available in red or black for small block Chevy.

    Note: Standard Cap = Socket-style Cap = Points-style Cap

  • Moroso 22640 3-Vane Vacuum Pump, Original Design
    Moroso 22640 3-Vane Vacuum Pump, Original Design
    (Part #54522640)
    x
                This 3-vane vacuum pump has a versatile billet aluminum design. Its engineered vane material allows for improved efficiency and wear.
    • Versatile Billet aluminum design
    • Achieves greater vacuum sooner
    • Engineered vane material for improved efficiency and wear
    • 4.150" O.D. body, 5.050" from back of pump to pulley mounting flange
    • Completely rebuildable in 15 minutes
    • Mounting bracket not included
    • 6500 max pump rpm

    Assembly Instructions (PDF)

     

  • Moroso 64945 Phenolic Insulating Carb Spacer for Holley 390
    Moroso 64945 Phenolic Insulating Carb Spacer for Holley 390
    (Part #54564945)
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    Phenolic material is a type of plastic resin which has excellent insulating properties, so it will keep the fuel in your 4 barrel Holley 4150/4160 cooler for more power. For 390 CFM carbs with 1.467" diameter bores.

    • Specially formulated material reduces heat conductivity 10 times greater than aluminum
    • Reduces fuel temperature inside the carburetor
    • Denser, more powerful fuel charge to the manifold
    • 4 hole plenum design
    • 1/2" height
    • Gaskets not included
  • Moroso 25970 Universal Dipstick
    Moroso 25970 Universal Dipstick
    (Part #54525970)
    x
                
    Moroso Universal Dipstick

    Instructions (PDF)

  • Moroso 20212 Chevy II 1986-Up Small Block Oil Pan
    Moroso 20212 Chevy II 1986-Up Small Block Oil Pan
    (Part #54520212)
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    If you are lucky enough to be putting together a '62-'67 Chevy II, you know the oil pan is a little bit special. These Moroso pans take the pain out of the engine install while giving it a better oiling system. Has a 6 quart capacity (not including filter).

    • Pick-up 54524120 or 54524122 is required for installation
    • Wet Sump, 9" Deep
    • Clears 3.80" stroke with most steel rods
    • Notched sump clears steering linkage
    • Compatible with most starter/flywheel combinations
    • Reduces oil temperature

    For cars without power steering. Pump pick-up NOT included but is available as noted below.

    Moroso Oil Pan Instructions (PDF)

  • Moroso 68850 Sprint Car Breather Kit
    $184.99
    $211.99
    Moroso 68850 Sprint Car Breather Kit
    (Part #54568850)
    x
                
    • Attaches to the valley pan on a sprint car engine
    • Kit includes a 1-3/4" diameter tubing with 8.5" long legs
    • Black anodize finish
    • Includes a billet aluminum clamp with mounting holes
    • Cleanable and re-usable filter
  • Moroso 74131 Drag Race Switch Panel
    $99.99
    $121.33
    Moroso 74131 Drag Race Switch Panel
    (Part #54574131)
    x
                Check out this drag race switch panel from Moroso Performance. This panel includes a starter button and 5 on\off switches. This product is sold individually.
    • Makes custom wiring of your vehicle much easier and professional
    • Face constructed of rugged .050" thick aluminum and black anodized to prevent corrosion, Fiber Design versions available for enhanced styling
    • Power indicator lights and front mounted, E-Z access fuse holders with pigtails attached, features not found on other manufacturer's switch panels
    • Heavy-duty on/off switches are 12 volt single-pole, single- throw with screw terminals rated at 20 amps lamp load
    • Heavy-duty fingertip starter controls are waterproof and dustproof, and include screw terminals rated at 12 volts and 35 amps
    • A selection of custom labels is included so you can customize each Switch Panel to your individual needs
    • Black anodized finished prevents corrosion
  • Moroso 21323 Circle Track Oil Pan, 1980-85 Pass. Side Dipstick w/ Plug
    Moroso 21323 Circle Track Oil Pan, 1980-85 Pass. Side Dipstick w/ Plug
    (Part #54521323)
    x
                

    Now you can have a Moroso oil pan for an affordable price. It features trap doors for oil control, removable windage tray, built-in crank scraper and accepts up to 3.800" stroke with steel rods. It's 7-1/2" deep, 11" wide and fits 78-87 Metric chassis and Camaro stubs. Fits small block Chevy.

    • Cost-effective Circle Track oil pan with Moroso quality and performance
    • Trap door baffles for oil control
    • Removable louvered windage tray
    • Built–in crankscraper
    • Accepts 3.80" stroke with steel rods
    • Accepts most starter and flywheel combinations
    • Will not fit engine blocks with splayed main caps
    • Accepts most starter and flywheel combinations
    • Will not fit engine blocks with splayed main caps
    • Has a 7 quart capacity (not including oil filter)
  • Moroso Spark Plug Wires, Under Headers, HEI Cap, Ready-To-Install
    Moroso Spark Plug Wires, Under Headers, HEI Cap, Ready-To-Install
    (Part #91064310)
    x
                If you have ever tried to put plug wires together yourself, you know how fustrating it can be. These pre-assembled Moroso 7mm spiral core wires are fiberglass reinforced with a silicone outer layer. Wires have 90° boots on both ends. Available in red or black for small block Chevy.
            
  • Moroso 46200 Screw-In Wheel Studs, 1/2-20 x 3 Inch, 5 Pack
    Moroso 46200 Screw-In Wheel Studs, 1/2-20 x 3 Inch, 5 Pack
    (Part #54546200)
    x
                

    These screw-in wheel studs manufactured from Moroso Performance are made of a high strength steel. The screw-in design makes them easy to apply. These wheel studs are sold in sets of 5.

    • 1/2" -20 x 3"
    • Screw-in
    • Socket Head Cap Screw
    • Fits all aftermarket axles with 1/2" -20 threads 
    • Made in USA

    Note: Do NOT use these studs with wheel spacers!

  • Moroso 63500 Small Block Chevy Aluminum Short Water Pump
    Moroso 63500 Small Block Chevy Aluminum Short Water Pump
    (Part #54563500)
    x
                

    Moroso first pioneered the aluminum water pump for racing over 15 years ago. Over the years, continual improvements have resulted in providing the best cooling system components available for competition use.

    • Computer designed housing cast from 356-T6 aluminum
    • Lightweight impeller maintains consistent coolant temp throughout the water jacket
    • 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  

    Fits 1955-1968 “Short” design 5/8" shaft S/B Chevy appliactions. Note: Pump will not clear a billet 910-11040 timing cover.

    545-63500 Instructions (PDF)

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

  • Moroso 23845 Engine Save Pre-Filter Oil Filter Screen
    Moroso 23845 Engine Save Pre-Filter Oil Filter Screen
    (Part #54523845)
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    Stainless steel screen locates between the block and the oil filter to stop debris before it enters the filter element. Periodic inspections serve as early warning of engine failure. Fits S/B, B/B and 90° V-6 Chevy engines with spin-on oil filters. Does not affect oil pressure.

    • Unique stainless steel screen locates on top of spin-on oil filters to trap debris before it enters the filter element undetected
    • Particulate matter trapped in the screen and detected during periodic inspections serves as an "early warning signal" for impending engine failures
    • 304 stainless steel filtration-grade screen traps contaminants down to the 280 micron range without affecting oil flow or oil pressure
    • Crimped rings at both outside and inside diameters provide increased strength and extended durability
  • Moroso OE64011 Flathead Universal Spark Plug Wires Kit
    Moroso OE64011 Flathead Universal Spark Plug Wires Kit
    (Part #91064200)
    x
                

    Finally, a set of 7mm supression spark plug cables as a universal plug wire kit for your Flathead.

    We started with black, 7mm suppressive core wire that will go through your looms. The 90° black plug boots are installed but you have to install the straight or 90° distributor ends. We even put in enough wire to place your coil on the firewall. Comes with straight boots for the distributor end of the plug wire. Black only.

    Two sets of boots/terminals are included, one set for conventional socket-type caps and one set for HEI type caps. The set includes 9 cables, the longest being 51" and the shortest being 24". Use eight for the plugs, one for the coil.

    Learn how to properly attach new spark plug terminals and boots by reading our tech article. How to Install Spark Plug Wire Ends.

  • Moroso 23901 Oil Accumulator, 1.5 Quart Capacity
    Moroso 23901 Oil Accumulator, 1.5 Quart Capacity
    (Part #54523901)
    x
                

    This Moroso oil accumulator prevents intermittent loss of oil pressure that can occur under hard acceleration, severe cornering or hard braking. If oil pressure drops below optimum levels, an air-charged piston automatically forces up to 1.5 quarts of reserve oil to the main galleries.

    The Accumulator is tapped to the pressure side of the engine’s oiling system. When the engine is running, oil pressure forces reserve oil into the accumulator and compresses the air ahead. When the danger is over and the pump is once again primed with oil, the oil pressure forces oil back into the Accumulator where it is ready for the next emergency. Moroso Accumulators can also be used to manually pre-lube engines before starting to prevent cold-start scuffing and premature bearing wear.

    • Perfect for Sport Compacts and other vehicles with 4- and 6-cylinder engines
    • 1-1/2 quarts of oil under pressure provide emergency supply instantaneously when needed
    • Air Pressure gauge verifies that Accumulator is ready for use
    • Cold start valve releases oil into cold engine for reduced wear
    • Tapped for 1/2" NPT fitting
    • Can be mounted in any position using Moroso Accumulator Mount Brackets

    545-23901 Instructions (PDF)

  • Moroso 20511 Small Block Ford 302 Rear Sump Oil Pan
    Moroso 20511 Small Block Ford 302 Rear Sump Oil Pan
    (Part #54520511)
    x
                

    Moroso kicked-out sump oil pans offer increased oil capacity without restricting ground clearance or having the oil too close to the crankshaft. Trap door baffles are also included to provide a constant supply of oil at the pickup under severe racing conditions.

    • Clears all 4-bolt main caps including 4-bolt rear
    • Clears 3.40" stroke with most steel rods
    • Engineered to supply oil to sump at all times
    • Compatible with most starter/flywheel combinations
    • Increased capacity reduces oil temperature
    • Magnetic oil drain plug
    • For use with 1-piece, rear sump gasket
    • Rear sump
    • 7 quart capacity (not including filter)
    • 9" deep

    Fits: 1979-up Mustang, 1981-'88 Thunderbird, Cougar, 1979-'86 Capri and other Ford rear sump applications (except Mustang II).

  • Moroso 64060 Chevy Short Pump Double Groove Crank Pulley
    Moroso 64060 Chevy Short Pump Double Groove Crank Pulley
    (Part #54564060)
    x
                S/B Chevy, double groove cast aluminum lower pulley, 25% reduction. Available for short water pumps. 5/8" shaft.
    • Precision machined from high grade, lightweight aluminum castings
    • Extra-deep belt grooves provide added belt retention during rapid changes in engine RPM
    • Small pulley diameter slows fan, water pump, and alternator speed to reduce horsepower-robbing drag
    • High RPM water pump operation is improved, reducing impeller speed below cavitation threshold
    • 5-3/8" diameter
  • Moroso 23920 Oil Accumulator Mount Bracket
    Moroso 23920 Oil Accumulator Mount Bracket
    (Part #54523920)
    x
                

    For use with Moroso 1.5 quart and 3 quart oil accumulators # 545-23901 and 545-23900. 

    • Brackets provide safe, sure mount for Moroso Accumulators
    • Designed to be easily fastened to any flat surface
    • Includes T-Bolt type clamps accepted by NHRA

    545-23920 Instructions (PDF) 

  • Moroso 6488 Gilmer Type Vacuum Pump Pulley, 36 Tooth
    New
    Moroso 6488 Gilmer Type Vacuum Pump Pulley, 36 Tooth
    (Part #54564888)
    x
                

    Moroso 64888 Vacuum Pump Pulley features a 3-bolt mounting pattern that accepts standard Gilmer belts with a width of a 1/2 inch or less. Constructed out of premium aircraft grade aluminum. Features a direct bolt-on installation.

    • 36 tooth count
    • Accepts Gilmer type belts
    • Constructed out of aircraft grade aluminum
    • 3-Bolt mounting pattern 
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