MAST MOTORSPORTS OFFERS THE MOST COMPREHENSIVE LS & LT LINE OF CYLINDER HEADS.
WE START WITH A RAW CASTING AND COMPLETE THE MACHINING PROCESS 100% IN HOUSE.
WE DESIGN AND MANUFACTURE OUR OWN CASTINGS EXCLUSIVELY WITH OUR FOUNDRY PARTNER. MAST CASTINGS HAVE BEEN DESIGNED TO WITHSTAND THE EXTREMES OF ALL FORMS OF RACING AND PERFORMANCE.
MANUFACTURED FROM A356 T6 MATERIAL. THEY ARE
FULLY HEAT TREATED AND PRESSURE TESTED.
MAST COMPLETES THE MANUFACTURING PROCESS USING STATE OF THE ART
HURCO 5 AXIS CNC MACHINGES - FROM RAW CASTINGS TO COMPLETED HEA, RIGHT HERE IN NACOGDOCHES, TEXAS.
A PREMIUM CASTING AND CYLINDER ISN'T COMPLETE UNLESS YOU MATCH IT WITH PREMIUM COMPONENTS. MAST EXCLUSIVELY UTILIZES
MADE IN THE USA CHE VALVE SEATS AND VALVE GUIDES TO COMPLEMENT OUR PREMIUM BLACK LABEL CYLINDER HEADS. THERE IS NO QUESTION CHE OFFERS THE BEST AND FINEST IN MATERIALS, MACHINGING AND LONGEVITY THAT ENSURES YEARS OF
PERFORMANCE AND
QUALITY.
FINISHING AND VALVE JOBS ARE COMPLETED USING ONLY THE BEST CNC VALVE JOB PROCESS UTILIZING A
NEWEN CNC VALVE CUTTING MACHINE.
Dimensional Specs
- Bore Size: 3.780" (+)
- Weight: 29 lbs.
- Intake Valve Size: 2.040"
- Exhaust Valve Size: 1.570"
- Valve Stem Diameter: 5/16"
- Valve Length: 5.450"
- Valve Angle: 11°
- Valve Spring Pocket Diameter: 1.65"
- Valve Spring Install Height: 1.800"
- Head Stud Size: .493"
- Valve Guide OD: .502"
- Valve Job Type: Newen CNC 5 Angle
Air Flow & Performance Criteria
- Intake Max. Flow: 330 CFM @ 7.000"
- Exhaust Max. Flow: 240 CFM @ 7.000"
- Intake Average Flow: 218 CFM
- Exhaust Average Flow: 171 CFM
- Intake Seat Material: Ductile Iron
- Intake Port Volume: 252cc
- Exhaust Port Volume: 99cc
- Standard Chamber Volume: 62cc
- 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: Mast Billet
- Rocker Arm Type: OE LS7 1.7 or Aftermarket
- Guide Material: Phosphor Bronze
General
- Rocker Stand Type: Mast Billet
- Rocker Stands Included: Yes
- Rocker Stand Dowels Included: Yes
- Uses Stock Rocker Bolts: No
- Rocker Bolts Included: No
- Rocker Arm Type: OE LS7 1.7 or Aftermarket
- Head Bolt QTY: 6 Bolt Style
- Valve Cover Rail Height: + 1/2 inch
- Can use OE Valve Cover: Yes
Custom Options Available
- Chamber Softening
- Custom Chamber Sizing
- 1/2 inch head stud clearance
- Copper Exhaust & Intake Valve Seats
