What is the proper break-in procedure for this camshaft?

As a solid flat tappet camshaft, this COMP Cams part requires a specific break-in procedure. Typically, this involves running the engine at a consistent 2000-2500 RPM for approximately 20 minutes immediately after installation to ensure proper lifter seating and prevent damage.

Does this camshaft fit all 1967-1975 Chevrolet Big Block engines?

This camshaft fits Chevrolet Big Block engines from 1967-1975 that were originally equipped with flat tappet camshafts. However, it will not fit 1965-1966 396 c.i.d. models that have an oiling groove in the rear journal.

What is the difference between this camshaft and a hydraulic roller camshaft?

This is a solid flat tappet camshaft, which uses traditional flat tappets and requires a specific break-in procedure to prevent wear. Hydraulic roller camshafts use roller lifters, generally offer less maintenance, and often have broader RPM ranges without the same break-in concerns.

COMP Cams LS-6+ Nostalgia Plus Camshaft 11-671-4

Name: COMP Cams Camshaft CB Nostalgia LS-6+
Brand: COMP Cams
Price: 323.69 USD
Availability: InStock

COMP Cams Camshaft CB Nostalgia LS-6+

$323.69

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Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

COMP Cams LS-6+ Nostalgia Plus camshaft. Get the sound of a GM LS6 cam with modern tight lash performance for your Big Block.

Key Features

Fits Chevrolet Big Block 396-454 engines originally equipped with flat tappet camshafts.
Nostalgia Plus series camshaft designed to replicate the sound of the GM LS6 cam.
Features a 239/246 degree duration at 0.050 inch lift for improved mid-to-upper RPM power.
Solid flat tappet design requires specific break-in procedures.
Well-built component for enhanced engine performance.
COMP Cams part number 11-671-4.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

This COMP Cams Nostalgia Plus camshaft is designed for Chevrolet Big Block engines originally equipped with flat tappet camshafts, like the 396 and 454 cubic inch V8s. It aims to give you the distinctive sound of the GM LS6 cam while offering improved performance with modern tight lash valve train operation. This camshaft is a solid flat tappet design, meaning it uses traditional lifters and requires proper break-in procedures.

The Nostalgia Plus series is built to provide strong power gains, and this particular grind, the LS-6+, features a 239/246 degree duration at 0.050 inch lift. This specification is designed to deliver excellent power in the mid to upper RPM range, making it suitable for a wide variety of Chevrolet vehicles from the late 60s through the mid-70s, including popular models like the Chevelle, Camaro, and Impala. It's a well-built component intended to wake up your big block's performance.

When installing this camshaft, remember that it is a flat tappet design. This means it requires a specific break-in procedure, typically involving running the engine at 2000-2500 RPM for about 20 minutes immediately after installation to properly seat the lifters and prevent premature wear. Always refer to the manufacturer's installation instructions for the complete break-in and installation details.