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Home Products Tube Size 1.75" Cadillac 331 (Late) Straight Lake Header Kit
Cadillac 331 (Late) Swept Lake Header Kit $249.00
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Cadillac 365-429 Swept Lake Header Kit $249.00

Cadillac 331 (Late) Straight Lake Header Kit

$219.00

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SKU: 900-0080 Categories: 1.75", 1952, 1953, 1954, 1955, 2", 331, Cadillac, Straight Lake Header Kits
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Description

Includes One Straight Lake Header Kit for the Cadillac 331 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 and a surface ready to weld to.

Kit includes: 

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

2 – 1-3/4″ OD, 0.065″ wall plain steel (not aluminized!) 70 degree mandrel bends

2 – 1-3/4″ OD, 0.065, 10″ long plain steel tubing

2 – 2″ 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:

Cadillac

331 cu. in (1952-55)

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

 

Ports designed to be used with 1-3/4″ (end ports) and 2″ (center port) exhaust tubing.

 

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

Additional information
Megaphone Size

3.5" Outlet, 4" Outlet

Shipping & Delivery

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    • COMPLETE CHASSIS
    • RIDE CONTROL
    • SUSPENSION KITS
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      • HEADER KITS (U-WELD)
        • STRAIGHT LAKE HEADER KITS
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    • LAKE HEADER ACCESSORIES
      • DUMP TUBES & TURNOUTS
      • LAKE HEADER CAPS & BLOCKOFFS
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    • FORMED MERGE COLLECTORS
    • MEGAPHONES
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    • CARBURETOR FLANGES
      • 1 BARREL
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      • 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
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