Chevelle Cowl Induction Hood
chevelle cowl induction hood
The Chevelle cowl induction hood (RPO ZL2, 1966–1972) is an iconic, functional cold-air induction hood for Chevrolet Chevelle muscle cars. It delivers denser, cooler high-pressure air from the windshield cowl to the carburetor, boosting horsepower and torque while adding legendary 1960s–70s street styling. Optimized for classic car restoration, performance upgrades, and show-quality builds, it's a must-have for Chevelle SS 396/454, Malibu, and El Camino owners seeking OEM authenticity and measurable power gains.
| Parameter | Specifications |
|---|---|
| Compatible Models | 1966–1972 Chevrolet Chevelle (SS 396/454, Malibu), El Camino |
| Cowl Height | 2 in (50.8 mm) – Standard (1966–1969); 6 in (152.4 mm) – Performance (1970–1972) |
| Material Options | 19-gauge steel, fiberglass, carbon fiber |
| Weight | Steel: 45–50 lbs (20–23 kg); Fiberglass: 25–30 lbs (11–14 kg); Carbon Fiber: 15–20 lbs (7–9 kg) |
| Induction Type | Vacuum-actuated flapper door (WOT activation); Sealed cold-air duct |
| Airflow Gain | 30–40% more CFM than stock hood; 5–12 HP increase |
| Mounting | Bolt-on (factory hinges/latches); Pin-on (race fiberglass) |
| Finish | EDP primer (steel), black gelcoat (fiberglass), gloss carbon fiber |
| Engine Clearance | 2 in (standard) – 6 in (high-performance) for tall manifolds/carburetors |
| OEM Designation | RPO ZL2 Cowl Induction Hood (1970–1972 SS) |
| Installation Time | 1–2 hours (bolt-on); 30 mins (pin-on) |
Core Function & Performance Details
Functional Cold-Air Induction
Cowl Pressure Zone: Draws cool, dense, high-pressure air from the base of the windshield (a natural high-pressure area) instead of hot underhood air.
Vacuum-Actuated Flapper Door: Opens under WOT (wide-open throttle) when engine vacuum drops, maximizing airflow; closes at idle to block heat/debris.
Iconic Styling & Fit
Authentic OEM Design: Correct 2"–6" raised cowl scoop, reverse-facing vent, and factory-style contours for 1966–1972 Chevelles.
Model-Specific Fit: Direct bolt-on for Chevelle SS, Malibu, and El Camino; no modifications for most years.
Finish Options: EDP-coated steel (primer ready), black gelcoat fiberglass, or carbon fiber (custom).
Construction & Durability
Materials:
Steel: 19-gauge stamped steel (OEM spec), EDP coated for rust protection.
Fiberglass: Lightweight high-temperature resin (40–50% lighter than steel).
Carbon Fiber: Premium 3K twill (ultra-lightweight, race-grade).
Structural Integrity: Reinforced inner bracing, factory hinge/latch mounts, and hood pin provisions.
Weather Resistance: UV-stable coatings, heat-resistant up to 250°F (121°C), and corrosion-proof.
Application of chevelle cowl induction hood
Vehicle Fitment (By Year)
1966–1967 Chevelle/Malibu: 2" cowl induction hood, direct bolt-on, OEM-style steel.
1968–1969 Chevelle: 2" raised scoop, EDP-coated steel, fits SS 396.
1970–1972 Chevelle SS/El Camino: ZL2-spec 2"–6" cowl, vacuum flapper door, 454 Big Block compatible.
Ideal Uses
Classic Car Restoration: OEM-correct replacement for matching-numbers Chevelle SS builds.
Performance Upgrades: Cold-air induction for 396/454 big-block engines; improves drag strip/street performance.
Show Cars: Iconic muscle car styling boosts car show appeal and value.
Street Machines: Functional aesthetic for pro-touring/restomod builds.
Race Applications: Lightweight fiberglass/carbon fiber for drag racing (6" cowl for tall intakes).
More Products
If you are interested in this chevelle cowl induction hood or other related products, you can contact us at any time, we also have other products in the filters products industry. You can click below learn more about it.
Hot Tags: chevelle cowl induction hood, China chevelle cowl induction hood manufacturers, suppliers, factory
Previous
No InformationYou Might Also Like
Send Inquiry