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Home Products Tube Size 1.625" Oldsmobile 303 Straight Lake Header Kit
Mopar Slant 6 170-225 Straight Lake Header Kit $219.00
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Oldsmobile 371-394 Swept Lake Header Kit $249.00

Oldsmobile 303 Straight Lake Header Kit

$219.00

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SKU: 900-0180 Categories: 1.625", 1949, 1950, 1951, 1952, 1953, 303, Exhaust Kits & Accessories, Header Kits (U-Weld), Lake Header Kits, Oldsmobile, Straight Lake Header Kits
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Description

Includes One Straight Lake Header Kit for the Oldsmobile 303 hot rod motor (see motor applications below).  These flanges are cut with a CNC HD (High Definition) Plasma cutter out of 3/8” Pickled and Oiled (P&O) steel.  P&O material is hot rolled steel that has been dipped in acid to remove the mill scale and then lightly coated with oil.  The end result is less work to clean off the mill scale as needed with hot rolled mild steel.

Kit includes: 

1 pair – 30″ long steel megaphones (1-5/8″ inlet & 3-1/2″ outlet) – 4″ outlet available upon request

1 – 1-5/8″ OD, 0.065″ wall plain steel (not aluminized!) 180 degree mandrel bend

2 – 2-1/4″ OD, 0.065, 10″ long plain steel tubing

2 – 1-5/8″ OD, 0.065, 10″ long plain steel tubing

1 pair – 3/8″ thick exhaust flanges – specific motor application listed above

(photo is shown just for reference, contents listed above is actually what you will receive)

 

Motor Application:

Oldsmobile

            303 cu. in (1949-53) 

            *more applications/years may work, verify before purchasing.

 

Ports designed to be used with 1 5/8” tubing for the end ports and 2 1/4″ tubing for the center port..

 

These flanges are designed in CAD and are test fit on an actual head to make sure proper fitment is achieved.

Additional information
Weight 9.0718474 lbs
Dimensions 8 × 36 × 8 in
Megaphone Size

3.5" Outlet, 4" Outlet

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  • (208)305-6469
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  • CHASSIS/SUSPENSION
    • COMPLETE CHASSIS
    • RIDE CONTROL
    • SUSPENSION KITS
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    • ACCESSORY DRIVES
    • CARBURETORS
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    • VALVE COVERS
  • EXHAUST KITS & ACCESSORIES
    • LAKE HEADER KITS
      • HEADER KITS (U-WELD)
        • STRAIGHT LAKE HEADER KITS
        • SWEPT LAKE HEADER KITS
    • LAKE HEADER ACCESSORIES
      • DUMP TUBES & TURNOUTS
      • LAKE HEADER CAPS & BLOCKOFFS
  • MEGAPHONES, TRANSITIONS, COLLECTORS
    • FORMED MERGE COLLECTORS
    • MEGAPHONES
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    • CARBURETOR FLANGES
      • 1 BARREL
      • 2 BARREL
      • 4 BARREL
    • COLLECTOR/UNIVERSAL FLANGES
      • 3-BOLT COLLECTOR FLANGES
    • EXHAUST/HEADER FLANGES
    • INTAKE FLANGES
    • ONE-PIECE EXHAUST/INTAKE FLANGES
    • TURBO FLANGES
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    • FULL-WELDED INTAKES
    • INTAKE KITS (U-WELD)
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