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["3.780\"","As Cast","cylinder heads","Factory Mast","Hydraulic","LT","OE Valves","small bore","W\/ Valves"]
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Replacement 5.3 Liter LT 3.780" Bore - Factory Mast OE Stock Replacement - Direct Injected - OE Valves
SKU: CH-LTX-310500
Description
Description
Factory Replacement - NO CNC Porting
Introducing Factory Mast Gen 5 LT Replacement Cylinder Heads.
Our team carefully inspects, pressure tests, machines, and qualifies our gently used factory OE heads. We machine and qualify the deck, and all surfaces to better than factory.
Great as a factory replacement cylinder head, or for your own porting applications.
Full Send, no compromises, no shortcuts, ever. Dimensional Specs
Bore Size: 3.780" (+)
Weight: 30 lbs.
Intake Valve Size: 1.928 "
Exhaust Valve Size: 1.556"
Valve Stem Diameter: 8mm
Valve Length: 5.550"
Intake Valve Angle: 12.5° x2.61°
12°x2.38°
Valve Spring Pocket Diameter: 1.325"
Valve Spring Install Height: 1.880"
Head Stud Size: .427"
Valve Guide OD: .500"
Air Flow & Performance Criteria
Intake Average Flow: 217
Exhaust Average Flow: 156
Intake Seat Material: OE Seat Material
Intake Port Volume: 273cc
Exhaust Port Volume: 114cc
Standard Chamber Volume: 58 cc
Port Type: OE Port
Materials
Cylinder Head Material: 319-T7 Aluminum
Intake Valve Seat Material: OE Seat Material
Exhaust Valve Seat Material: OE Seat Material
Deck Thickness: .300"
Rocker Stand Type: Pedestal
Rocker Arm Type: LS7 Exhaust 1.8 Ratio
Guide Material: Powdered Metal
General
Rocker Stand Type: Pedestal
Rocker Stands Included: Built-In
Rocker Stand Dowels Included: N/A
Uses Stock Rocker Bolts: No
Rocker Bolts Included: No
Rocker Arm Type: LS7 Exhaust 1.8 Ratio
Head Bolt QTY: 4 Bolt Style
Valve Cover Rail Height: + ½ inch
Can use OE Valve Cover: Yes
Custom Options Available
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