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SKU: 11688-8 | UPC: 807298066479
Manley Chevy LS-7 Small Block Severe Duty/Pro Flo Intake Valves (Set of 8) 1997-2006 Camaro Corvette GTO
Manley Severe Duty intake valves deliver race-proven strength for Chevy LS small block engines with cathedral port heads. This set of 8 fits 1997-2006 performance vehicles like Corvette Camaro and GTO enhancing airflow and reliability under high RPM. Built for demanding racing conditions these valves support increased power output.
Key Features
- NK-844 Material: Exclusive stainless steel alloy resists fatigue and maintains shape in extreme heat for consistent performance
- 2.165 in. Diameter: Matches OEM cathedral port heads with precise 5.118 in. length and 1.285 in. margin for drop-in compatibility
- +0.250 in. Undercut: Lightens valve reducing reciprocating mass to allow higher revs and quicker throttle response
- Severe Duty Design: Engineered for endurance racing with enhanced stem strength to handle aggressive valve springs
- Set of 8: Complete intake valve kit covers all cylinders for full engine rebuilds or upgrades
Product Notes
- Inspect valve seats and guides before installation for proper clearance
- Pair with Manley exhaust valves for matched set performance
- Special order item confirm stock before ordering
Installation Notes
- Professional installation recommended.
- Valve lash set to 0.018 in. intake with stock rockers adjust for aftermarket cams
- Compatible with LS1 LS2 LS6 heads no machining required on standard bores
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2004 | Chevrolet | Corvette | Base Z06 |
| 1998-2002 | Chevrolet | Camaro | Z28 SS |
| 1998-2002 | Pontiac | Firebird | Formula Trans Am |
| 2004-2006 | Pontiac | GTO | Base |
| 1999-2007 | Chevrolet | Silverado 1500 | LS LT |
Why Choose Manley?
- Decades of racing wins in NHRA drag and circle track series
- Advanced metallurgy tested in professional motorsports
- CNC machined stems and heads for exact tolerances
Frequently Asked Questions
-
Q: Will these valves fit LS7 rectangular port heads?
A: No these are sized for cathedral port LS1 LS2 LS6 heads confirm your head type before purchase -
Q: What makes NK-844 material different?
A: NK-844 offers higher tensile strength and corrosion resistance than standard stainless for longer life in boosted or nitrous applications -
Q: What is the warranty on these valves?
A: Manley provides a limited lifetime warranty against manufacturing defects when installed by certified technicians
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Foam protected box 10 x 6 x 2 inches
- Weight: 2.1 lbs
Manley Performance
Founded in 1966 by Hank Manley, Manley Performance Products has become one of the most respected names in high-performance engine components. Originally launched as Manley Speed Equipment, the company quickly earned a reputation for precision manufacturing, durability, and race-proven performance. From grassroots beginnings in New Jersey to global recognition in professional motorsports, Manley Performance continues to set the standard in high-performance automotive parts. Manley Performance Engine Parts Manley is known for manufacturing premium internal engine components designed for street, strip, and professional racing applications. Their product line includes: Manley stainless steel valves Manley forged pistons Manley connecting rods (H-Beam, I-Beam, Turbo Tuff, Pro Series) Manley camshafts Manley crankshafts Manley valvetrain components Valve springs, retainers, and hardware Every Manley component is engineered with strict quality control and race-driven innov...
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