Aluminum Intake Elbow with Nitrous Port for Chevrolet Impala Caprice (1994-1996) 5.7L

High-Flow Aluminum Intake Elbow with Nitrous Port for 1994-1996 Chevrolet Impala, Caprice (B-Body)

What it Does: The aluminum intake elbow replaces the restrictive factory plastic duct on the 1994-1996 Chevrolet Impala and Caprice to streamline airflow into the throttle body and provide an integrated port for nitrous delivery.

The Stock Chevrolet Impala, Caprice Airflow Bottleneck

Factory B-body LT1 intake systems rely on blow-molded plastic elbows characterized by a sharp bend radius and ribbed interior walls. Under high-vacuum conditions at wide-open throttle, these internal corrugations generate excessive boundary-layer turbulence right before the twin throttle blades. Additionally, factory plastic suffers from thermal fatigue and vacuum collapse after prolonged heat exposure, restricting overall volumetric efficiency and dampening throttle response.

The Engineering Solution

Cast from durable aluminum with a continuous, enlarged transition radius, this intake elbow significantly reduces flow resistance and stabilizes air velocity across the intake tract. The rigid cast aluminum housing resists engine bay heat soak and structural deflection under heavy engine loads. It features an integrated, pre-machined nitrous boss aimed directly at the center of the throttle body for uniform wet or dry distribution across all cylinders. A threaded plug is included to seal the port completely when running naturally aspirated.

What's Included

• 1 Cast Aluminum Intake Elbow
• 2 Couplers
• 4 Hose Clamps
• 1 Nitrous Port Plug

Technical Specifications

Compatibility

• 1994-1996 Chevrolet Impala SS 5.7L LT1 V8
• 1994-1996 Chevrolet Caprice 5.7L LT1 V8

Frequently Asked Questions & Fitment Warnings

Does this fit the B-body Impala, Caprice?

Yes, this is a direct fit for the 1994-1996 Chevrolet Impala and Caprice equipped with the 5.7L LT1 engine. Does not fit LS1 or other engine platforms.

Do I need an ECM tune after installing this elbow?

No calibration changes are required when installing the elbow alone, as it retains the factory mass airflow sensor geometry and throttle specifications.

The Chevrolet Muscle Standard

Engineered for high-demand American V8 applications, this cast intake elbow provides the structural rigidity, aggressive induction acoustic note, and nitrous-ready capability required for serious LT1 performance builds.