Mast Motorsports
Mast Factory Gen V LT 301cc/60cc 4.065 CNC Port Cylinder Heads w/ OE Valves - Direct Injection - CH-LTX-310512
- PART NUMBER:
- CH-LTX-310512
- MPN:
- CH-LTX-310512
- Availability:
- Ships from Manufacturer
- Shipping:
- Free Over $98 In U.S. 48
- Type:
- Gen V LT Cylinder Heads
- Material:
- 319-T7 Aluminum
- CNC Machined Intake Runner:
- Yes
- CNC Machined Exhaust Runner:
- Yes
- CNC Machined Combustion Chamber:
- Yes
- Minimum Bore Size (in.):
- 4.065
- Bolts Per Cylinder:
- 4
- Assembled:
- No
- Intake Valve Angle (°):
- 12.5 x 2.61
- Exhaust Valve Angle (°):
- 12 x 2.38
- Intake Runner Volume (cc):
- 301
- Exhaust Runner Volume (cc):
- 112
- Chamber Volume (cc):
- 60
- Intake Valve (in.):
- 2.126
- Intake Material:
- N/A
- Exhaust Valve (in.):
- 1.590
- Exhaust Material:
- N/A
- Valve Guides Included:
- Yes
- Valve Guides Material:
- Powdered Metal
- Intake Seat Material:
- OE
- Exhaust Seat Material:
- OE
- Valve Job Type:
- OE Port
- Rocker Stands Included:
- Yes
- Valve Springs Included:
- No
- Valve Spring Type:
- N/A
- Valve Spring Max Lift (in.):
- N/A
- Closed Spring Pressure:
- N/A
- Open Spring Pressure:
- N/A
- Retainers Included:
- No
- Spring Retainer Material:
- N/A
- Quantity:
- Sold as a Pair
Description
Mast Factory Gen V LT 301cc/60cc 4.065 CNC Port Cylinder Heads w/ OE Valves - Direct Injection - CH-LTX-310512
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.
NOTE*** if you are using the direct injection system- 2022+ applications require 6mm injectors- Older Models use 7.5mm injectors. This will also matter if you are using a DI injector plug kit.
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.
Dimensional Specs
- Bore Size: 4.065" (+)
- Weight: 30 lbs.
- Intake Valve Size: 2.126" OE/2.165" Large Valve
- Exhaust Valve Size: 1.590"
- Valve Stem Diameter: 8mm
- Valve Length: 5.550"
- Intake Valve Angle: 12.5°x2.61°
- Exhaust Valve Angle: 12°x2.38°
- Valve Spring Pocket Diameter: 1.325"
- Valve Spring Install Height: 1.880"
- Head Stud Size: .472"
- Valve Guide OD: .500"
- Valve Job Type: Newen CNC 5 Angle
Air Flow & Performance Criteria
- Intake Max. Flow: 350 CFM OE / 379 CFM Large Valve @ 0.700"
- Exhaust Max. Flow: 214 CFM @0.700"
- Intake Average Flow: 251 CFM OE / 270 CFM Large Valve
- Exhaust Average Flow: 157 CFM
- Intake Seat Material: OE Seat Material/Ductile Iron (Large Valve)
- Intake Port Volume: 301cc
- Exhaust Port Volume: 112cc
- Standard Chamber Volume: 60cc
- Port Type: CNC
Materials
- Cylinder Head Material: 319-T7 Aluminum
- Intake Valve Seat Material: OE Seat Material/Ductile Iron (Large Valve)
- 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
- Head Assembly