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Manley Performance

Manley Performance BBC S/D 2.300in Intake Valves

MPN: 11530-8 Catalog #: 001519924 Category: Valves Check Vehicle Fitment

Product Details

Discover the pinnacle of performance and racing excellence with Manley's Severe Duty? Valves. Exhaust valves crafted from XH-428 material and Intake valves from NK-844 material, these valves stand as a testament to our unwavering commitment to superi

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.

Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8)

Intake Valve - Severe Duty - 2.300 in Head - 0.372 in Valve Stem - 5.325 in Long - Stainless - Big Block Chevy - Set of 8

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Engine Compatibility

GM - BBCMatched variant: BBC

Big Block Chevy; 396/427/454/572

Fitment note: Engine compatibility is provided as a guide. Please verify all fitment details before ordering.

Product Specs

Brand
Manley Performance
Part Number
11530-8
Catalog Number
001519924
Product Line
Valves
Category
Engines & Parts
Type
Valves
UPC / Barcode
807298049663
Vendor Product Category
Engine Components
Vendor Product Subcategory
Valves
Length
11.75 in
Width
6.75 in
Height
2.50 in
Weight
4.00 lb
Units Per SKU
1
Freight / LTL
No
Air Restricted
No
Prop 65
Y
CARB Approved
Yes
Clearance Item
No

Shipping & Availability

Current status Special Order
Estimated timing Ships directly from manufacturer

This item is fulfilled directly by the manufacturer/vendor and never stocked. Estimated ship times may vary.

PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

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