Home / Shop / Manley Chevrolet LS3 L-99 (L-92 Head) 1.600in Head Diameter Race Master Exhaust Valves (Set of 8)

Manley Chevrolet LS3 L-99 (L-92 Head) 1.600in Head Diameter Race Master Exhaust Valves (Set of 8)

SKU: MAN12353-8

Valves

MAN Race Master Valves

Manley Performance

Manley Chevrolet LS3 L-99 (L-92 Head) 1.600in Head Diameter Race Master Exhaust Valves (Set of 8)

SKU: MAN12353-8

Valves

MAN Race Master Valves

Last Available from MFR. LAST ONE AVAILABLE from the manufacturer's distribution centre. Once sold, this item may not be immediately available again. The dispatch timeframe shown is an estimate based on historical orders for this part and is dependent on the manufacturer releasing the final available unit.

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Description

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM.

Part Type

Engine Exhaust Valve

Data: v4.2 - Upd: 2026-10-10 19:33:39

Features

Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.
Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.
Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.
Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.

Specifications

Product Attributes - UPC: 807298105871
Product Attributes - Brand: Manley
Product Attributes - Quantity: Sold as a set of 8.
Product Attributes - Part Type: Valves
Product Attributes - Product Line: Manley Race Master Valves
Product Attributes - Undercut Stem: No
Product Attributes - Swirl-Polished: Yes
Product Attributes - Valve Material: XH-426 stainless steel
Product Attributes - Valve Position: Exhaust
Product Attributes - Valve Head Style: 18 degree dish
Product Attributes - Lock Groove Style: Conventional
Product Attributes - Lock Groove Quantity: 1-groove
Product Attributes - Valve Tip Length (mm): 4.064mm
Product Attributes - Approximate Weight (g): 95
Product Attributes - Valve Seat Width (in.): 0.115 in.
Product Attributes - Valve Tip Length (in.): 0.160 in.
Product Attributes - Manufacturer's Part Number: 12353-8
Product Attributes - Exhaust Valve Head Diameter (mm): 40.640mm
Product Attributes - Exhaust Valve Stem Diameter (mm): 7.98mm
Product Attributes - Exhaust Overall Valve Length (mm): 132.461mm
Product Attributes - Exhaust Valve Head Diameter (in.): 1.600 in.
Product Attributes - Exhaust Valve Stem Diameter (in.): 0.314 in.
Product Attributes - Exhaust Overall Valve Length (in.): 5.215 in.

Reference Information

Brand Name/s	Manley Performance
StreetFX SKU	man12353-8
SFX Item ID	4061194
Supplier Item Code	4061194
Manufacturer SKU	12353-8
Manufacturer UPC	807298105871
Alternative References	LS3, L-99, (L-92, 1.600in