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

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Shop Classic Truck Headers & Exhaust At Speedway Motors

Speedway Motors has the classic truck headers and mufflers you need, at a price you can afford. Check out our huge inventory of chassis headers, Flathead V8 headers and tight-fit block hugger headers, all available with durable ceramic AHC coating, polished, or stainless steel. Don't forget about our cast iron exhaust manifolds and exhaust tips as well. With an awesome selection of high performance Flowmaster mufflers, exhaust wrap, glasspacks, and various gaskets, Speedway Motors is your classic truck exhaust superstore!

"Classic Truck, Exhaust Header Collectors" Page 1 of 3

  • Dynatech Plain Steel Slip-On Collector, 2-1/8 x 3-1/2 x 8 Inch
    Dynatech Plain Steel Slip-On Collector, 2-1/8 x 3-1/2 x 8 Inch
    SKU-31178360835
    x
                Dynatech® slip-on race collectors offer great performance at an affordable  price. Changing  collector outlet size or length are popular ways to make tuning adjustments as  track conditions change (i.e. changing to a larger collector outlet size can aid  in "slick track" conditions).  
    • Race-ready to bolt on right out of the box
    • U-tabs are a direct bolt-on fit to all Dynatech® Drag Headers
    • Hi-temp black paint
    • Long-transition 4-into-1 design for maximum power
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually

    Note: O2 bung not included.

  • Dynatech Ceramic Coated Slip-On Collector, 2-3/8 x 4 x 12 Inch
    Dynatech Ceramic Coated Slip-On Collector, 2-3/8 x 4 x 12 Inch
    SKU-31178381241
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions).

    • Direct bolt-on fit to all Dynatech® Drag Headers
    • Durable Ceramic coating
    • Long-transition 4-into-1 design for maximum power
    • 18mm accessory bung (see Notes)
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually
  • Dynatech 780-10516 Ceramic Coated Merge Collector, 2 x 3-1/2 Inch
    Dynatech 780-10516 Ceramic Coated Merge Collector, 2 x 3-1/2 Inch
    SKU-31178010516
    x
                

    Dynatech® Ceramic Coated Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Dynatech   780-10514 Ceramic Coated Merge Collector 1-3/4 x 3-1/2 Inch
    Dynatech 780-10514 Ceramic Coated Merge Collector 1-3/4 x 3-1/2 Inch
    SKU-31178010514
    x
                

    Dynatech® Ceramic Coated Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Dynatech   780-11516 Ceramic Coated Merge Collector, 2 x 3 Inch
    Dynatech 780-11516 Ceramic Coated Merge Collector, 2 x 3 Inch
    SKU-31178011516
    x
                

    Dynatech® Ceramic Coated Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Garage Sale - Dynatech   Merge Collector
    $159.99
    $299.99
    Garage Sale
    Garage Sale - Dynatech Merge Collector
    SKU-AUP123
    x
                

    Dynatech® Merge Collector

    Ceramic Coated

    2-3/8" to 5"

     

    These collectors are garage sale priced because they have been discontinued.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Dynatech 780-02518 Plain Steel Merge Collector, 2-1/4 x 4 Inch
    Dynatech 780-02518 Plain Steel Merge Collector, 2-1/4 x 4 Inch
    SKU-31178002518
    x
                

    Dynatech® Mild Steel Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Formed long transition 4-into-1 design for maximum power
    • Jig-located U-tabs at 180 degrees for bolt-on mounting
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Dynatech Ceramic Coated Slip-On Collector, 2 x 3-1/2 x 12 Inch
    Dynatech Ceramic Coated Slip-On Collector, 2 x 3-1/2 x 12 Inch
    SKU-31178351236
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions).

    • Direct bolt-on fit to all Dynatech® Drag Headers
    • Durable Ceramic coating
    • Long-transition 4-into-1 design for maximum power
    • 18mm accessory bung (see Notes)
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually
  • Header Collector, 1 3/4 Inch Primaries
    Header Collector, 1 3/4 Inch Primaries
    SKU-91013837
    x
                Weld-on header collectors. Available in 3" or 3-1/2" collector size. 1-3/4" tube size. 
            
  • Dynatech 780-14510 Ceramic Coated Merge Collector, 2-1/2 x 5 Inch
    Dynatech 780-14510 Ceramic Coated Merge Collector, 2-1/2 x 5 Inch
    SKU-31178014510
    x
                

    Dynatech® Ceramic Coated Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Garage Sale - Dynatech   Slip-On Collectors, 1.625 Inlet, 3 Inch Outlet
    Garage Sale
    Garage Sale - Dynatech Slip-On Collectors, 1.625 Inlet, 3 Inch Outlet
    SKU-AUP190
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Available in a variety of outlet size and 8" and 12" lengths. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions.) 

    All collectors come race-ready to bolt on right out of the box. U-tabs are jig installed for a direct bolt-on fit to all Dynatech® Headers. Available in a wide variety of primary tube and collector outlet sizes for all popular applications.

    • Available in v12" length
    • Hi-temp black design 
    • Formed long transition 4-into-1 design for maximum power
    • Jig located U-tabs at 180 degrees for bolt-on mounting 

    These Collectors are Garage Sale priced because they have been discontinued from our current product line.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Dynatech 783-21230 Plain Steel Slip-On Collector, 1-5/8 x 3 x 12 Inch
    Dynatech 783-21230 Plain Steel Slip-On Collector, 1-5/8 x 3 x 12 Inch
    SKU-31178321230
    x
                Dynatech® slip-on race collectors offer great performance at an affordable  price. Changing  collector outlet size or length are popular ways to make tuning adjustments as  track conditions change (i.e. changing to a larger collector outlet size can aid  in "slick track" conditions).  
    • Race-ready to bolt on right out of the box
    • U-tabs are a direct bolt-on fit to all Dynatech® Drag Headers
    • Hi-temp black paint
    • Long-transition 4-into-1 design for maximum power
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually

    Note: O2 bung not included.

  • Dynatech Ceramic Coated Slip-On Collector, 2-1/8 x 4 x 12 Inch
    Dynatech Ceramic Coated Slip-On Collector, 2-1/8 x 4 x 12 Inch
    SKU-31178361241
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions).

    • Direct bolt-on fit to all Dynatech® Drag Headers
    • Durable Ceramic coating
    • Long-transition 4-into-1 design for maximum power
    • 18mm accessory bung (see Notes)
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually
  • Garage Sale - Dynatech   Slip-On Collector
    $74.99
    $117.99
    Garage Sale
    Garage Sale - Dynatech Slip-On Collector
    SKU-31183812402C
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions.) 

    All collectors come race-ready to bolt on right out of the box. U-tabs are jig installed for a direct bolt-on fit to all Dynatech® Headers.

    • Formed long transition 4-into-1 design for maximum power
    • Jig located U-tabs at 180 degrees for bolt-on mounting 

    This collector is garage sale priced because it has some cosmetic blemishes in the coating.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Header Collector, 1 7/8 Inch Primaries
    Header Collector, 1 7/8 Inch Primaries
    SKU-91013839
    x
                Weld-on header collectors. Available in 3" or 3-1/2" collector size. 1-7/8" tube size.
            
  • Dynatech Ceramic Coated Slip-On Collector, 1-7/8 x 3 x 12 Inch
    Dynatech Ceramic Coated Slip-On Collector, 1-7/8 x 3 x 12 Inch
    SKU-31178341231
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions).

    • Direct bolt-on fit to all Dynatech® Drag Headers
    • Durable Ceramic coating
    • Long-transition 4-into-1 design for maximum power
    • 18mm accessory bung (see Notes)
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually
  • Garage Sale - Dynatech 780-13519 Ceramic Coated Merge Collector, 2-3/8 x 4-1/2 Inch
    Garage Sale
    Garage Sale - Dynatech 780-13519 Ceramic Coated Merge Collector, 2-3/8 x 4-1/2 Inch
    SKU-AUP2788
    x
                Please view the product's page for more information
            
  • Dynatech 780-03519 Plain Steel Merge Collector, 2-3/8 x 4-1/2 Inch
    Dynatech 780-03519 Plain Steel Merge Collector, 2-3/8 x 4-1/2 Inch
    SKU-31178003519
    x
                

    Dynatech® Mild Steel Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Formed long transition 4-into-1 design for maximum power
    • Jig-located U-tabs at 180 degrees for bolt-on mounting
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Garage Sale - Dynatech Collector 2 Inch x 3-1/2 Inch x 12 Inch
    Garage Sale
    Garage Sale - Dynatech Collector 2 Inch x 3-1/2 Inch x 12 Inch
    SKU-AUP821
    x
                Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions).  
    • Direct bolt-on fit to all Dynatech® Drag Headers
    • Durable Ceramic coating
    • Long-transition 4-into-1 design for maximum power
    • 18mm accessory bung (see Notes)
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually
     
    This collector is garage sale priced because the inlet has been expanded to much.
     
     
    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS
     
  • Dynatech Ceramic Coated Slip-On Collector, 2-1/8 x 3-1/2 x 12 Inch
    Dynatech Ceramic Coated Slip-On Collector, 2-1/8 x 3-1/2 x 12 Inch
    SKU-31178361236
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions).

    • Direct bolt-on fit to all Dynatech® Drag Headers
    • Durable Ceramic coating
    • Long-transition 4-into-1 design for maximum power
    • 18mm accessory bung (see Notes)
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually
  • Garage Sale - Dynatech   Slip-On Collector
    $84.99
    $117.99
    Garage Sale
    Garage Sale - Dynatech Slip-On Collector
    SKU-AUP319
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Available in a variety of outlet size and 8" and 12" lengths. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions.) 

    All collectors come race-ready to bolt on right out of the box. U-tabs are jig installed for a direct bolt-on fit to all Dynatech® Headers. Available in a wide variety of primary tube and collector outlet sizes for all popular applications. 

     

    These collectors are garage sale priced because they have a few small dings and dents in them from shipping

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Garage Sale - Dynatech 780-10514 Ceramic Coated Merge Collector, 1-3/4 X 3-1/2 Inch
    Garage Sale
    Garage Sale - Dynatech 780-10514 Ceramic Coated Merge Collector, 1-3/4 X 3-1/2 Inch
    SKU-AUP2372
    x
                

    Dynatech® Ceramic Coated Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

     

    These collectors are garage sale priced because they are new old stock.

     

     NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Dynatech 780-00516 Plain Steel Merge Collector, 2 x 3-1/2 Inch
    Dynatech 780-00516 Plain Steel Merge Collector, 2 x 3-1/2 Inch
    SKU-31178000516
    x
                

    Dynatech® Mild Steel Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Formed long transition 4-into-1 design for maximum power
    • Jig-located U-tabs at 180 degrees for bolt-on mounting
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Garage Sale - Dynatech   Stainless Steel Merge Collector, Slip Over
    Garage Sale
    Garage Sale - Dynatech Stainless Steel Merge Collector, Slip Over
    SKU-AUP435
    x
                

    Dynatech® merge collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it and go" part. In order to realize the full potential of this collector disign, dyno testing is recommended. (See Notes tab)

    Note: 9:1 applications must use stainless (not mild steel) merge collectors for best performance and durability.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower

     These collectors are garage sale priced because they have some surface rust.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Garage Sale - Dynatech   Collectors, 1-3/4 Inlets/3-1/2 Outlet, 12 Inches Long
    Garage Sale
    Garage Sale - Dynatech Collectors, 1-3/4 Inlets/3-1/2 Outlet, 12 Inches Long
    SKU-AUP445
    x
                

    1-3/4" Inlets

    3-1/2" Outlet

    12" Long

     

    These collectors are garage sale priced because they are different than what we currently offer.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

     

     

  • Garage Sale - Dynatech   Slip-On Collector, 1.88 X 3.0
    Garage Sale
    Garage Sale - Dynatech Slip-On Collector, 1.88 X 3.0
    SKU-31183408352PGS
    x
                

    This collector is garage sale priced because it has some light cosmetic damage and can't be sold as a first.

     

     NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Dynatech 780-02517 Plain Steel Merge Collector, 2-1/8 x 4 Inch
    Dynatech 780-02517 Plain Steel Merge Collector, 2-1/8 x 4 Inch
    SKU-31178002517
    x
                

    Dynatech® Mild Steel Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Formed long transition 4-into-1 design for maximum power
    • Jig-located U-tabs at 180 degrees for bolt-on mounting
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Dynatech Plain Steel Slip-On Collector, 1-7/8 x 3-1/2 x 12 Inch
    Dynatech Plain Steel Slip-On Collector, 1-7/8 x 3-1/2 x 12 Inch
    SKU-31178341235
    x
                Dynatech® slip-on race collectors offer great performance at an affordable  price. Changing  collector outlet size or length are popular ways to make tuning adjustments as  track conditions change (i.e. changing to a larger collector outlet size can aid  in "slick track" conditions).  
    • Race-ready to bolt on right out of the box
    • U-tabs are a direct bolt-on fit to all Dynatech® Drag Headers
    • Hi-temp black paint
    • Long-transition 4-into-1 design for maximum power
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually

    Note: O2 bung not included.

  • Garage Sale - Dynatech 780-11514 Ceramic Coated Merge Collector, 1-3/4 X 3 Inch
    Garage Sale
    Garage Sale - Dynatech 780-11514 Ceramic Coated Merge Collector, 1-3/4 X 3 Inch
    SKU-AUP2378
    x
                Please view the product's page for more information
            
  • Dynatech   780-13510 Ceramic Coated Merge Collector 2-1/2 x 4-1/2 Inch
    Dynatech 780-13510 Ceramic Coated Merge Collector 2-1/2 x 4-1/2 Inch
    SKU-31178013510
    x
                

    Dynatech® Ceramic Coated Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Garage Sale - Dynatech   Slip-On Collector
    $79.99
    $112.99
    Garage Sale
    Garage Sale - Dynatech Slip-On Collector
    SKU-AUP204
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions.) 

    All collectors come race-ready to bolt on right out of the box. U-tabs are jig installed for a direct bolt-on fit to all Dynatech® Headers.

    • Formed long transition 4-into-1 design for maximum power
    • Jig located U-tabs at 180 degrees for bolt-on mounting 

    This collector is garage sale priced because it has some scratches in the coating.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Garage Sale - Dynatech   Slip-On Collector, 2-3/8 X 4, Painted
    Garage Sale
    Garage Sale - Dynatech Slip-On Collector, 2-3/8 X 4, Painted
    SKU-AUP433
    x
                

    These collectors are garage sale priced because they are new old stock.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

  • Garage Sale - Dynatech   Stainless Steel Merge Collector
    Garage Sale
    Garage Sale - Dynatech Stainless Steel Merge Collector
    SKU-AUP118
    x
                

    Dynatech® merge collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it and go" part. In order to realize the full potential of this collector disign, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower

    This collector is garage sale priced because it has been discontinued.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 

  • Garage Sale - Dynatech   Chrome 2-3/8 X 4-1/2 Merge Collector
    Garage Sale
    Garage Sale - Dynatech Chrome 2-3/8 X 4-1/2 Merge Collector
    SKU-AUP596
    x
                

    Dynatech® chrome Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.
    • Formed long transition 4-into-1 design for maximum power
    • Jig located U-tabs at 180 degrees for bolt-on mounting 

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

    This collector is garage sale priced because the chrome is not very good.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

     

  • Dynatech Ceramic Coated Slip-On Collector, 2-1/4 x 4 x 12 Inch
    Dynatech Ceramic Coated Slip-On Collector, 2-1/4 x 4 x 12 Inch
    SKU-31178371241
    x
                

    Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions).

    • Direct bolt-on fit to all Dynatech® Drag Headers
    • Durable Ceramic coating
    • Long-transition 4-into-1 design for maximum power
    • 18mm accessory bung (see Notes)
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually
  • Dynatech 780-01514 Plain Steel Merge Collector, 1-3/4 x 3 Inch
    Dynatech 780-01514 Plain Steel Merge Collector, 1-3/4 x 3 Inch
    SKU-31178001514
    x
                

    Dynatech® Mild Steel Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Formed long transition 4-into-1 design for maximum power
    • Jig-located U-tabs at 180 degrees for bolt-on mounting
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Dynatech 780-00515 Plain Steel Merge Collector, 1-7/8 x 3-1/2 Inch
    Dynatech 780-00515 Plain Steel Merge Collector, 1-7/8 x 3-1/2 Inch
    SKU-31178000515
    x
                

    Dynatech® Mild Steel Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Formed long transition 4-into-1 design for maximum power
    • Jig-located U-tabs at 180 degrees for bolt-on mounting
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

  • Garage Sale - Dynatech   Slip-On Collector, 1-3/4 Inlets, 3-1/2 Outlets
    Garage Sale
    Garage Sale - Dynatech Slip-On Collector, 1-3/4 Inlets, 3-1/2 Outlets
    SKU-AUP314
    x
                

    These collectors are garage sale priced because they have some scratches in the coating.

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

     

     

  • Dynatech Plain Steel Slip-On Collector, 1-3/4 x 3-1/2 x 12 Inch
    Dynatech Plain Steel Slip-On Collector, 1-3/4 x 3-1/2 x 12 Inch
    SKU-31178331235
    x
                Dynatech® slip-on race collectors offer great performance at an affordable  price. Changing  collector outlet size or length are popular ways to make tuning adjustments as  track conditions change (i.e. changing to a larger collector outlet size can aid  in "slick track" conditions).  
    • Race-ready to bolt on right out of the box
    • U-tabs are a direct bolt-on fit to all Dynatech® Drag Headers
    • Hi-temp black paint
    • Long-transition 4-into-1 design for maximum power
    • Listed by Primary I.D. x Collector O.D. x Length
    • Sold individually

    Note: O2 bung not included.

  • Dynatech 780-13519 Ceramic Coated Merge Collector, 2-3/8 x 4-1/2 Inch
    Dynatech 780-13519 Ceramic Coated Merge Collector, 2-3/8 x 4-1/2 Inch
    SKU-31178013519
    x
                

    Dynatech® Ceramic Coated Merge Collectors are a popular option when your racing application requires maximum horsepower. Merge collectors are not usually a "bolt it on and go" part. In order to realize the full potential of this collector design, dyno testing is recommended.

    • 100% TIG-welded
    • Optimum reduction angle
    • Increases torque and horsepower
    • Sold individually
    • Listed as Primary I.D. x Collector O.D.

    Note: Does not include O2 bungs. To purchase separately, order part 311-78510097.

    How It Works (PDF)

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