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Home Products Tube Size 1.5" Cadillac 331 (Early) Straight Lake Header Kit
Cadillac 331 (Early) Swept Lake Header Kit $249.00
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Cadillac 331 (Late) Swept Lake Header Kit $249.00

Cadillac 331 (Early) Straight Lake Header Kit

$219.00

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SKU: 900-0081 Categories: 1.5", 1.75", 1949, 1950, 1951, 331, Cadillac, Header Kits (U-Weld), Lake Header Kits, Straight Lake Header Kits
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Description

Includes One Straight Lake Header Kit for the Cadillac 331 (early, small port heads) 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

1 – 1-1/2″ OD, 0.065″ wall plain steel (not aluminized!) 180 degree mandrel bends (customer to cut at angle needed to match megaphone angle as needed)

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

2 – 1-1/2″ 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 (1949-51)

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

 

Ports designed to be used with 1-1/2″ (end ports) and 1-3/4″ (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
Weight 9.97903214 lbs
Dimensions 8 × 36 × 8 in
Megaphone Size

3.5" Outlet, 4" Outlet

Shipping & Delivery

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    • COMPLETE CHASSIS
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    • MEGAPHONES
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      • 1 BARREL
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      • 4 BARREL
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      • 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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