LS7 CNC Cylinder Head Porting Service Spring Kit:None, Tsp .660 6 exhaust valves

6 exhaust valves

Minimum Bore size 4

PCD surfaced to your desired chamber size

Our 260CC heads start as an aftermarket casting that we designed our own port for

LS7 CNC Cylinder Head Porting Service Spring Kit:None, Tsp .660 6 exhaust valves**CUSTOMER SUPPLIES HEADS** All CNC services include: Disassembly and inspection CHE guide upgrade Heavy cleaning Full CNC port PCD surfaced to your desired chamber size Proprietary valve job Hand blended valve job Cleaning and reassembly to your needs and specification CONTACT US FOR OPTIONS Intake valve: 2. 20 Exhaust: 1. 615 Flow lift . 2 . 3. . 4 . 5 . 6 . 65 . 7 Int 156 237 300 338 375 391 402 Exh 108 162 205 232 246 250 253