SKU: 65779468402

Manley Chevy LS-1, LS-2 Small Block 1.550 Pro Flo Severe Duty Exhaust Valves (Set of 8)

Sale price$143.10 Regular price$159.00
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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Description

Manley Chevy LS-1, LS-2 Small Block 1.550 Pro Flo Severe Duty Exhaust Valves (Set of 8)Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat, this stress soars to 40,000 to 60,000 lbs. Manley exhaust valves, tested at 40,000 psi and 1400? F, impressively endured up to 100,000,000 (one hundred million) cycles. In contrast, competitors' offerings failed after just 100,000 cycles, showcasing a

Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat, this stress soars to 40,000 to 60,000 lbs. Manley exhaust valves, tested at 40,000 psi and 1400?F, impressively endured up to 100,000,000 (one hundred million) cycles. In contrast, competitors' offerings failed after just 100,000 cycles, showcasing a staggering 1000 times better fatigue life.Designed for High Temperature Gasoline Engines: Engineered for superior performance in high-temperature gasoline engines.Chrome Stems and Hard Tips: Incorporating chrome stems and hard tips for enhanced durability and longevity.Optimized Combustion: Swirl polished under head areas and fully machined combustion faces for improved airflow and combustion efficiency.XH-428 for Exhaust: No competitor worldwide offers the exceptional XH-428 as exhaust valve material. It boasts nearly double the ultimate tensile strength at 1500?F compared to the competition's EV-8.NK-844 for Intake: Our intake valve material, NK-844, is equally unmatched, displaying over four times the ultimate tensile strength of the competition's best intake valve material at 1000?F.
Shipping Notes
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 65779468402

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LouRymer
Waukegan, US
★★★★★ 5
Perfect size and beautiful!
Style: 4mm - 2.2g
These are beautiful! Shiny and the perfect size. I love them!
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Reviewed in the United States on May 24, 2025
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Frank Pitts
Birmingham, US
★★★★★ 5
Very nice earrings
Style: 4mm - 2.2g
They are very nice earrings, very shiny.
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Reviewed in the United States on March 12, 2025
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It was a beautiful bracelet, im so much happy and satisfied
Lexington, US
★★★★★ 5
Just dont soray w cologne
Style: 1.5mm - 1.4g
Love it
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Reviewed in the United States on December 6, 2025
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kamc1
Chelsea, US
★★★★★ 5
Beautiful quality
Style: 2mm - 2g
Perfect size, beautifully made, great quality & price! Arrived on time, nicely packaged for gift-giving.
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Reviewed in the United States on April 29, 2023
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Rodneyherring
Waukegan, US
★★★★★ 5
I thought they were priced okay Beautiful
Style: 4mm - 2.2g
Beautiful I've gotten so many compliments on love them
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Reviewed in the United States on May 19, 2025

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