Specifications
- Brand
- Manley Performance
- Part #
- 11485B-8
- UPC
- 807298232966

Manley Titanium Exhaust Valve Kit - Big Block General Motors
$1617.09
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Manley Titanium Exhaust Valve Kit for Big Block GM. Lightweight titanium construction for high-RPM use.
Key Features
- This kit includes a set of 8 Manley titanium exhaust valves for Big Block General Motors engines.
- Titanium construction significantly reduces valve train weight, improving engine efficiency and performance.
- Designed for high-RPM applications, allowing for higher engine speeds and compatibility with aggressive camshafts.
- Features one-piece forged construction with grain flow for enhanced durability and to minimize weak points.
- Meticulously machined in CNC turning centers to exacting tolerances for optimal performance.
- Utilizes premium titanium alloys balanced for mechanical properties, hardness, ductility, and fatigue strength.
⚠️ 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
Product Details
This kit gives you a set of eight Manley titanium exhaust valves, specifically made for Big Block General Motors engines. These aren't your everyday valves; they're crafted from top-grade titanium alloys to significantly cut down on weight in your valve train. This reduction is crucial for allowing your engine to spin faster and handle extended periods at high RPMs, which is often necessary when you're running aggressive camshafts or pushing the limits of your engine.
What sets these valves apart is their one-piece forged construction. This method ensures a solid, durable part with consistent grain flow, avoiding the potential weak spots you might find in other types of valve construction. Manley machines these valves with a lot of care in advanced CNC machines, holding very precise measurements so they perform exactly as they should. The titanium alloys chosen are a smart balance of strength, hardness, and ductility, all important for handling the heat and stress inside an engine, especially at high speeds. You can get them with standard square keeper grooves or Manley's Bead Loc single radius grooves.
Because these are high-performance parts, Manley puts them through a tough final inspection to make sure every valve meets their high standards for reliability and performance. They deliver these valves with very tight tolerances, meaning you get a precise component ready for installation. Keep in mind that if your part number doesn't have a 'T' suffix, it means the valve doesn't have a hard tip, and you'll need to use a wear cap, like Manley's P/N 42104 or 42104TM, for tip protection.
Specifications
- Brand
- Manley Performance
- Manufacturer Part #
- 11485B-8
- UPC
- 807298232966
Frequently Asked Questions
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Manley Titanium Exhaust Valve Kit - Big Block General Motors





