243/ 317/ 799 CNC Cylinder Head Porting Service SPRING KIT:TSP .660" DUAL SPRING 600 exhaust valves

600 exhaust valves

7 Int 200 265 305 340 357 365 Exh 159 200 226 240 248 254

Minimum Bore size 4

510                    Exhaust:             1

243/ 317/ 799 CNC Cylinder Head Porting Service SPRING KIT:TSP .660" DUAL SPRING 600 exhaust valves**CUSTOMER SUPPLIES HEADS** All CNC services include: Disassembly and inspection 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 specifications CONTACT US FOR OPTIONS Intake valve: 2. 02 Exhaust: 1. 570 Intake Port: 235cc Flow lift . 2 . 3. . 4 . 5 . 6 . 65 Int 145 205 251 291 318 320 Exh 111 153 193 209 219 221