GM LS1 Cylinder Heads Cathedral Port 210cc In - 83cc Ex - 67cc Ch - Pair

• 283
• 327
• 350
• 383
• 400
• 406 

Technical Data

• Cathedral Port
• Intake: 210cc
• Exhaust: 83cc
• Chambers: 67cc
• Stud Base Thread Drilled: 7/16"
• Plug: 
• Straight
• Valve Guides: Bronze Manganese
• Suitable Valve Details
• Intake Valves: 2.02"
• Exhaust Valves: 1.60" 
• Valve Stem Diameter: 5/16"

BrandMaximum Valve Lift (in): 0.600 in.
Outside Diameter of Outer Spring (in): 1.300 in.
Damper Spring Included: No
Number of Springs Per Valve: Dual
Retainers Included: Yes
Retainer Material: Chromoly steel
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
QCH