275cc LS3 HEADS SPRING KITS:PAC 1209 DUAL SPRING KIT CHE guide upgrade

CHE guide upgrade

Our Small Bore CID LS7 CNC’d heads include:

8 Int 159 250 302 347 386 410 416 Exh 105 181 187 223 240 248 252

Our Brodix LS3 ported heads include:

but if this doesn’t meet your needs please call us so we can get you set up to your needs***

275cc LS3 HEADS SPRING KITS:PAC 1209 DUAL SPRING KIT CHE guide upgradeOur 275CC heads start as an aftermarket casting that we designed our own port for. These heads perform very well compared to other 260cc heads on the market. Our 260 LS3 ported heads include: Our in house CNC port Bronze valve guides PCD surfaced to your desired chamber size Proprietary competition valve job Your choice of spring kit Rev 2. 165 intake valves REV 1. 600 exhaust valves This is our most common setup, but if this doesnt meet your needs