Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
Speedway Motors Logo
America's Oldest Speed Shop ®

Search

Canadian Leaf

Schoenfeld Inc. Demo Derby Headers, 1-3/4 Primary, 3-1/2 In Collector

SAME DAY SHIPPING! Most orders ship within 24 hours.

Specs
Material Type:
Steel
Overall Height:
32.25
Sold in Quantity:
Pair
Finish:
Painted
Tube O.D.:
1.75
Port Height:
1.68
Port Width:
1.50
Flange Thickness:
.23
Flange Style:
D Port
Collector Diameter :
3.50
Header Dimension A:
5.00
Header Dimension B:
2.50
Header Dimension C:
18.25
Gasket(s) Included:
Yes
Hardware Included:
Yes
Collector Length:
7.75
MFG. Part #:
1514
Garage Sale:
No
Header Tube Type:
Zoomie
Schoenfeld Inc. Demo Derby Headers, 1-3/4 Primary, 3-1/2 In CollectorSchoenfeld Inc. Demo Derby Headers, 1-3/4 Primary, 3-1/2 In Collector
Schoenfeld Inc. Demo Derby Headers, 1-3/4 Primary, 3-1/2 In Collector

Click image to enlarge

Please NOTE the following about this product:

  • This item is sold as a pair.

Details

Reviews

Q & A

What's in the Box

  • Fits Small Block Chevy
  • Standard Port
  • Bolts & gaskets included
  • High flow mandrel bent tubing

Header Dimension Chart

You may also be interested in:

Rochester 2G Air Cleaner Adapter
SKU-91011360
                        
  • Allows you to use common 5-1/8" 4 bbl. air cleaner on your Rochester 2G 2 bbl. carburetor 
  • Billet aluminum
  • Must be modified or used with a spacer on 2GC models
Stant 10393 High Pressure Racing Radiator Cap, 28-32 Lbs
SKU-91015707
                        

Used by all the top NASCAR teams. The best high pressure radiator caps you can buy!

Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles

Speedway Chevy Tall Valve Covers w/ Breather Tubes, Plain Steel
SKU-91017155
                        

Valve covers have 1-3/8" breather tubes on one side only. Extra tall to clear rocker arm stud girdles or roller rockers. Fits '60-'86 small block Chevy V8. Breathers not included.

Sweet Mfg Steering U-Joint, 3/4 In Round to 3/4 In Round, Universal
SKU-91032234
                        

Don't jeopardize your safety with inferior quality steering components. Speedway offers only the finest steering u-joints available. Made by Sweet Manufacturing. These steering universal joints have 3/4 weld-on ends.

  • Full compliment bearings
  • Forged Vanadium steel yokes and u-joint
  • Highest quality for racing
  • Features needle bearing u-joints
  • U-Joint=3.875" L x 1.375" D

Learn more about u-joints and steering systems by reading our tech article. U-Joint Selection and Design.

 

Speedway Weld-On Steering Shaft Bracket, 8 Inch
SKU-91032720
                        

Steering column bracket welds to roll cage. 8" long overall, .100" steel, 3/4" slot.

Wheel Stud Drill Bit
SKU-91082007
                        

43/64" wheel stud drill bit with 1/2" shank. Used to drill out hubs and axle flanges for 5/8" wheel studs with .685 knurl diameter.

Lower Coil Spring Mount Perch
SKU-91720243
                        Lower coil spring mount welds to 3" axle tube for mounting conventional 5" coil springs.
                    
Speedway Single Sided Steel Lug Nut, 1/2 In RH Fine, Single Taper
SKU-91003912
                        

Use these oversized 1 Inch Hex Steel lug nuts in plane of those 'puny' stock size lug nuts.

You will need a 1" hex (6-sided) socket. 

1/2" Fine Thread fits most Ford and Mopar pattern studs.

  • 45° taper
  • 1/2" RH Fine Thread, Single Taper

What's The Angle
Most racing wheels have a 45° seat for the lug nut to seat in while most street wheels use 60°. By using 45° the lug nut is able to clamp tighter over a larger area, which helps keep your wheels on the car where they belong.

If you mix and match street and race wheels or lug nuts you are just asking for trouble. All our lug nuts are 45° and designed to be used with racing wheels.

 

 

Thin Steel Jam Nut, 3/4-16 RH
SKU-1750247
                        

Plain steel fine thread jam nut. Special half thickness nuts for securing steering heims to a panel or flange.

Speedway Chevy Universal Aluminum Radiators
SKU-917347
                        

Speedway’s line of universal Chevy radiators makes it easy for budget-minded racers to get a professional-quality aluminum racing radiator. These high performance radiators feature furnace-brazed construction, two rows of large 1" aluminum tubes, billet filler necks and a maximum number of fins per inch for great heat transfer. They are not available with transmission coolers and they do not come with mounting brackets.

These Chevy-style radiators have driver’s side upper inlets, passenger side lower outlets, and can be ordered in a variety of custom widths.

  • All-aluminum, furnace-brazed construction
  • No cheap epoxy glue or crimped in gaskets
  • Maximum amount of fins per inch allows greater heat transfer
  • Billet filler necks
  • Available in 22", 24", 28", or 31" widths (measurements include tanks)

Learn more about how radiators work and selecting the proper radiator for your vehicle by reading our tech article, Radiator Cooling Performance.

Steel Steering Wheels, 15 Inch, 2.75 Inch Dish
SKU-60409020
                        

Steering wheels feature a powder coated steel 3-spoke frame with rubber cushion grip. Does not include horn button.

Black, blue, red or purple available.

U-Joint, 3/4"-36 Spline To 3/4" Round Weld-on
SKU-91032236
                        

Don't jeopardize your safety with inferior quality Mustang II power rack universal joints. Speedway offers only the finest steering U-joints made by Sweet Manufacturing.

  • Full compliment bearings
  • Forged Vanadium steel yokes and u-joint
  • Highest quality for racing or street
  • Features needle bearing u-joints
  •  3/4"-36 Spline
Learn more about u-joints and steering systems by reading our tech article. U-Joint Selection and Design.

Note: GM columns measure slightly less than 1" while IDIDIT and Flaming River columns measure a true 1".  DO NOT interchange these u-joints.

Sweet Mfg U-Joint, 13/16 36-Spline to 3/4 Round, Big GM Pre 1978
SKU-91032239
                        

Don't jeopardize your safety with inferior quality steering components. Speedway offers only the finest steering U-joints available. Made by Sweet Manufacturing. These steering universal joints have a 3/4" round weld-on end.

  • Full compliment bearings
  • Forged Vanadium steel yokes and u-joint
  • Highest quality for racing or street
  • Features needle bearing u-joints
  • 13/16"-36 Spline
Learn more about u-joints and steering systems by reading our tech article. U-Joint Selection and Design.

Note: GM columns measure slightly less than 1" while IDIDIT and Flaming River columns measure a true 1".  DO NOT interchange these u-joints.

Valve Cover Shielded Breather, 1-3/8 Inch
SKU-465621513
                        Valve cover breathers feature a clamp-on shielded design. Washable & reuseable.
  • Clamps to a 1-3/8" O.D. tube
  • Overall height of the breather and base is 3-1/8”
  • Overall diameter of breather without shield is 2-7/8”
  • Overall diameter of breather with shield is 3-1/4”
Oversize Wheel Stud, 5/8 Inch Fine
SKU-91005957
                        

Replace those "puny" stock wheel studs with these "super-strength" oversized wheel studs.

Speedway Reduction Pulley Combo for Small Block Chevy Short Pump
SKU-91015460
                        

Kit includes a cast aluminum double groove cast aluminum water pump pulley, crank pulley, and a matched pair of heavy duty belts. Slows water pump speed by 20% for increased horsepower.

  • Upper Pulley Grooves:  Two
  • Lower Pulley Grooves:  Two 
  • Upper Pulley Diameter:  6-5/8" O.D.
  • Lower Pulley Diameter:  5-7/16" O.D.
  • Upper Pulley Snout Hole:  5/8" O.D. (can be drilled out to 3/4")

Fits Small Block Chevy V8 with '55-'68 short-style water pump with 5/8" shaft.

Note: The lower crank pulleys in our combo kits are manufactured thicker than normal stock pulleys.  This requires longer 3/8" bolts to be purchased separately.  Allen head type bolts recommended. 

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.

 

Flex-a-lite Heavy Duty Aluminum Cooling Fan
SKU-9101576
                        

Heavy duty fan recommended for stock cars. Moves the maximum amount of air for the best cooling.  Available in 15", 17", 18" or 19" diameters. Aluminum blades, non-flex design.  

  • Center hole is .624 or approximately 5/8"
  • Slotted 4 bolt pattern at opposing slots measures 1.428" to 2.672"

Flex-a-lite Fan Installation Instructions (PDF)

Learn more about the importance of using a fan and shroud with our radiators by reading our tech article. Radiator Cooling Performance

Aluminum Quick Release Steering Wheel Hubs, Hex, 3/4 Inch
SKU-8352701130
                        These quick release hubs come with a one-piece hex steel sleeve that must be welded to your steering column. Features a spring-loaded push button release. Purple anodized billet aluminum construction. 

Bolt holes for mounting steering wheel are fine thread 1/4"-20.

Sweet Mfg. Steering U-Joint, .620-36 Spline to 3/4 In Round, Chrysler
SKU-91032273
                        Don't jeopardize your safety with inferior quality steering  components. Speedway offers only the finest steering U-joints available.  Made by Sweet Manufacturing. These steering universal joints have a 3/4" round  weld-on end. 
  • Full compliment bearings
  • Forged Vanadium steel yokes and u-joint
  • Highest quality for racing or street
  • Features needle bearing u-joints
  • .620"-36 Spline

Learn more about u-joints and steering systems by reading our tech article. U-Joint Selection and Design.

Jet Performance 37001 Rochester Circle Track 2 Barrel Carburetor
SKU-45537001
                        

This Jet Performance Products 500 CFM 2GC carb is modified specifically for circle track racing. This Rochester carb complies with the IMCA rules. They are arguably the best OEM production two barrel carburetor for use in circle track racing.

  • .135 needle and seat to ensure adequate fuel and supply
  • Idle, transition, and accelerator pumps are modified
  • 1-11/16" bore, 1-3/8 venturi
  • Uses Holley jets (comes equipped with size #74)
  • 5/8-18" inverted flare fuel inlet
  • 2.008" x 3.695" mount pattern w/ .351" mount holes
  • No choke mechanism
  • Modified cluster to keep fuel curve correct throughout the RPM range
Schoenfeld Inc. Demo Derby Headers, 1-5/8 Primary, w/o Collector
SKU-9171522
                        
  • Fits Small Block Chevy
  • Standard Port
  • Bolts & gaskets included
  • High flow mandrel bent tubing
  • 27" tall from center of flange to end of tube 

Header Dimension Chart

Schoenfeld Inc. Demo Derby Headers, 1-5/8 Primary, 3 Inch Collector
SKU-9171512
                        
  • Fits Small Block Chevy
  • Standard Port
  • Bolts & gaskets included
  • High flow mandrel bent tubing
Speedway 5 Point Harness Seat Belt Combo, Latch and Link, Pull Down
SKU-910728
                        
Speedway's 5 point harness system features quality nylon webbing that is double stitched for extra strength. This seat belt combo is SFI 16.1 certified and is shown on the tags to verify.  It is dated and meets or surpasses USAC, NASCAR, SCCA, and other racing specifications. The Speedway racing belt features a 3 inch width pull down shoulder harness that is 55 inches in length. The deluxe latch and link lap belt is also 3 inches in width with a single sub belt. The Speedway Seat Belt Combo can be mounted as bolt-in or wrap around. Upgrade your car in both saftey and appearance as it is available in black, blue, red and purple.
  • Quality nylon
  • Double stitched for extra strength
  • SFI 16.1 certified
  • 3" individual shoulder harness
  • Features deluxe 3" lap belt with single sub belt and shoulder harness
  • All belts can be mounted as bolt-in or wrap around
  • All belts are dated and meet or surpass USAC, NASCAR, SCCA and other racing specifications
  • Black, blue, red or purple
Be sure to add Seat Belt Installation Kit for no delay on the bolt-in or wrap around process. Also get the most out of your new Speedway Harness System with the recommended Safety Racing Sternum Protector.
Speedway Racing Neck Brace, SFI 3.3-1
SKU-910730
                        
Speedway's racing neck brace has a fire retardant cotton cover and foam inner pad to give it a SFI 3.3-1 rating. It has a velcro closure for universal fit.
  • Fire retardant cotton cover and foam inner pad
  • Velcro closure for universal fit
  • SFI 3.3-1 rated
  • Available in Red, Blue, Black, or Purple
Holley 0-4412CT Circle Track 500 CFM 2 Barrel Carburetor
SKU-42504412
                        This 500cfm 4412CT Holly carb shares the hugely  successful features of the original 4412C but with a couple changes  aimed for circle track cars. The choke has been removed but the horn  remains and has been specially calibrated for circle track use. The  4412C Holley carb is easily the most winningest two barrel carburetor on the market  and comes out of the box ready to run. 

Features:
  • Choke delete
  • Choke horn remains
  • 50cc accelerator pump
  • 1 timed (spark) port, 1 full vacuum, & 1 PCV port
  • The mandated carbs for many oval track racing sanctioning bodies
  • Calibrated specifically for circle track use
Speedway SA2010 Racing Helmet
SKU-910700
                        

These deluxe SA10 helmets feature a soft knit fire proof lining and a lightweight fiberglass shell to help fit comfortably.  They also allow you maximum visibility with large eye ports and maximum ventilation with front, top, and rear vents.  Speedway SA10 helmets come predrilled for head and neck restraint systems.  Choose your color and size.

  • Soft knit fire proof lining
  • Large eye port with optically correct 3mm shield
  • Front, top, and rear vents for maximum ventilation
  • Lightweight fiberglass shell
  • Predrilled for head and neck restrain
  • Available in White(WHT) or Flat Black(FBLK)
  • Choose from sizes S-XXL

Helmet Sizing Chart

Proper Fitting Guidelines (PDF) 

Schoenfeld Inc 1514-LS1 , LS1 Demo Derby Headers 1-3/4 Inch
SKU-91715141
                        

This part is for the LS1. Bolts and gaskets are included. This also has high flow mandrel bent tubing.

  • 1-3/4" tube diameter
  • 8" collector length
  • 3-1/2" collector diameter