11 Degree Cathedral SPRING KIT:PAC 1209X Intake Port CC: 237

Intake Port CC:  237

Int 160 228 283 328 354 370 375 Exh 114 158 191 222 241 247 252

Exh 108 150

Our 275CC heads start as an aftermarket casting that we designed our own port for

These are a budget friendly valve cover to clean up your LS swap

11 Degree Cathedral SPRING KIT:PAC 1209X Intake Port CC: 237Our 11 Degree Cathedral CNC heads include: Our in house CNC port PCD surfaced Proprietary competition valve job Hand blended valve job TSP 660 Spring Kit REV 2. 08 Intake Valve REV 1. 57 Exhaust Valve ***This is our most common setup, but if this doesnt meet your needs please call us so we can get you set up to your needs*** Intake valve: 2. 080 Exhaust: 1. 57 Flow lift . 2 . 3. . 4 . 5 . 6 . 65 Int 139 213 266 311 340 352 Exh 107 150 186 216 225 232