[{"id":170473980001,"handle":"all-products","updated_at":"2024-10-03T15:50:04-05:00","published_at":"2020-09-09T18:55:52-05:00","sort_order":"best-selling","template_suffix":"pf-e03b4526","published_scope":"global","title":"All The Parts","body_html":""},{"id":347630918,"handle":"best-selling-products","title":"Best Selling Products","updated_at":"2024-10-04T15:10:21-05:00","body_html":null,"published_at":"2016-10-02T12:22:59-05:00","sort_order":"best-selling","template_suffix":null,"disjunctive":true,"rules":[{"column":"title","relation":"contains","condition":"Best Selling"},{"column":"title","relation":"not_contains","condition":"Best Selling"}],"published_scope":"global"},{"id":235944739015,"handle":"black-label-lt-di-cylinder-heads","updated_at":"2024-09-26T14:10:11-05:00","published_at":"2020-11-10T17:46:50-06:00","sort_order":"manual","template_suffix":"","published_scope":"global","title":"Black Label - LT Heads","body_html":""},{"id":404018266325,"handle":"black-label-cylinder-heads","updated_at":"2024-10-01T10:55:09-05:00","published_at":"2022-03-14T10:16:40-05:00","sort_order":"manual","template_suffix":"","published_scope":"global","title":"Black Label Cylinder Heads","body_html":"\u003cdiv style=\"text-align: center;\"\u003eLooking for something more specific ?\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.mastmotorsports.com\/collections\/black-label-cathedral-heads\"\u003eCathedral Port Heads\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.mastmotorsports.com\/collections\/black-label-ls3-heads\"\u003eLS3 Heads\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.mastmotorsports.com\/collections\/black-label-ls7-heads\"\u003eLS7 Heads\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.mastmotorsports.com\/collections\/black-label-lt-di-cylinder-heads\"\u003eLT Heads\u003c\/a\u003e\u003c\/div\u003e\n\u003ch5\u003e\u003c\/h5\u003e"},{"id":401051680981,"handle":"lt-cylinder-heads","updated_at":"2024-09-26T14:10:11-05:00","published_at":"2022-01-19T14:24:39-06:00","sort_order":"manual","template_suffix":"","published_scope":"global","title":"LT Cylinder Heads","body_html":""},{"id":170383245409,"handle":"all-cylinder-heads","updated_at":"2024-10-04T15:10:21-05:00","published_at":"2020-09-06T12:55:14-05:00","sort_order":"manual","template_suffix":"collection","published_scope":"global","title":"Products - All Cylinder Heads","body_html":""}]
["4.065\"","Black Label","CNC","cylinder heads","direct injection","Hydraulic","LT","LT1","medium bore","Port Injection","W\/ Stainless Valves","W\/ Titanium Valves","W\/ Valves"]
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LT1 Pair Black Label Cylinder Heads - 4.065 (+) Bore - For Direct Injection or Port Injection - Stainless Steel or Titanium Valves
For Direct Injection / Stainless Steel Valves
For Port Injection / Stainless Steel Valves
For Direct Injection / Titanium Intake & Stainless Steel Exhaust
For Port Injection / Titanium Intake & Stainless Steel Exhaust
Description
Description
The Mast Motorsports cylinder head product line is completely manufactured from a raw casting to a finished cylinder head in the USA located in Nacogdoches Texas.
Mast refuses to compromise on materials and methods that may jeopardize longevity, performance, and quality. When buying Mast Cylinder heads, you are getting the highest level of quality and performance on the market.
Full Send, no compromises, no shortcuts, ever.
Dimensional Specs
Bore Size: 4.065" (+)
Weight: 30 lbs.
Intake Valve Size: 2.165"
Exhaust Valve Size: 1.600"
Valve Stem Diameter: 5/16"
Valve Length: 5.550"
Intake Valve Angle: 12.5° x2.5°
Exhaust Valve Angle: 12°x2.5°
Valve Spring Pocket Diameter: 1.400"
Valve Spring Install Height: 1.800"
Head Stud Size: .530"
Valve Guide OD: .570"
Valve Job Type: Newen CNC 5 Angle
Air Flow & Performance Criteria
Intake Max. Flow: 355 CFM @ 0.700"
Exhaust Max. Flow: 224 CFM @ 0.700"
Intake Average Flow: 247 CFM
Exhaust Average Flow: 163 CFM
Intake Seat Material: Ductile Iron
Intake Port Volume: 292cc
Exhaust Port Volume: 111cc
Standard Chamber Volume: 60cc
Port Type: CNC
Materials
Cylinder Head Material: A356-T6 Aluminum
Intake Valve Seat Material: Ductile Iron
Exhaust Valve Seat Material: Ductile Iron
Deck Thickness: .750"
Rocker Stand Type: Pedestal
Rocker Arm Type: LS7 Exhaust 1.8 Ratio
Guide Material: Phosphor Bronze
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
Chamber Softening
Custom Chamber Sizing
½ inch head stud clearance
Copper Exhaust & Intake Valve Seats
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