Manley Titanium Valves 11978TB-8 Valves, VALVE-TI LS-7 2.250, .3135

SKU: MAN11978TB-8

Valves

Manley Performance

Manley Titanium Valves 11978TB-8 Valves, VALVE-TI LS-7 2.250, .3135

SKU: MAN11978TB-8

Valves

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

Manley titanium valves feature forged one-piece construction with grain flow, not a head welded to a stem. These jewel-like valves are machined in state-of-the-art CNC turning centers and valve stem grinders to exacting tolerances. Manley utilizes the finest titanium alloys for both the intakes and exhausts, providing the best balance of mechanical properties, hardness, ductility, and fatigue strength at the given temperatures. All Manley titanium valves must pass their rigorous final inspection process, and strict quality control enables them to deliver parts within tight tolerance. Custom valves can be delivered within a very reasonable turnaround time. Seat coatings are also available on certain shelf stock part numbers, as well as on custom valves.

Part Type

Valves

Data: v4.2 - Upd: 2026-10-14 10:12:06

Specifications

Product Attributes - Brand: Manley
Product Attributes - Manufacturer's Part Number: 11978TB-8
Product Attributes - Part Type: Valves
Product Attributes - Product Line: Manley Titanium Valves
Product Attributes - UPC: 807298079226
Product Attributes - Valve Position: Intake
Product Attributes - Intake Valve Head Diameter (in.): 2.250 in.
Product Attributes - Intake Valve Head Diameter (mm): 57.150mm
Product Attributes - Intake Valve Stem Diameter (in.): 0.313 in.
Product Attributes - Intake Valve Stem Diameter (mm): 7.95mm
Product Attributes - Intake Overall Valve Length (in.): 5.205 in.
Product Attributes - Intake Overall Valve Length (mm): 132.207mm
Product Attributes - Undercut Stem: No
Product Attributes - Swirl-Polished: No
Product Attributes - Valve Tip Length (in.): 0.290 in.
Product Attributes - Valve Tip Length (mm): 7.366mm
Product Attributes - Valve Material: Titanium
Product Attributes - Lock Groove Quantity: 1-groove
Product Attributes - Lock Groove Style: Conventional
Product Attributes - Approximate Weight (g): 80
Product Attributes - Valve Head Style: 12 degree dish
Product Attributes - Valve Seat Width (in.): 0.080 in.
Product Attributes - Quantity: Sold as a set of 8.

Reference Information

Brand Name/s	Manley Performance
StreetFX SKU	man11978TB-8
SFX Item ID	4927472
Supplier Item Code	4927472
Manufacturer SKU	11978TB-8
Manufacturer UPC	807298079226
Alternative References	LS-7

Compatibility

Application Data

Valve Fitment	Search by engine
Make	CHEVROLET
Beginning Year	2006
Ending Year	2015
Engine Type	V8
Engine Size	7.0L/427
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Valve Installed Length	Stock
Cylinder Head Type	LS7