BTR GEN III/IV LS Powdered Metal Valve Guide - 16pc Set - Brian Tooley Racing - BTR-311-2110-16

BTR GEN III/IV LS Powdered Metal Valve Guide - Single - BTR-311-2110-1and#x0D; BTR has brought out the BEST AMERICAN MADE valve guides on the market for your Gen III & IV or Gen V LT cylinder heads! BTR's powdered metal guides are a great upgrade or simply a service part for your worn stock guides. You will not find an aftermarket valve guide with a superior machining and metallurgy! Final honing per application required.and#x0D; Recommended valve stem to guide clearance of 0.0015" (For 8mm bronze guides clearance is typically 0.0008"). The O.D. is .500" which is correct for OEM GM Gen III-V cylinder heads.and#x0D; and#x0D; I.D. : 0.3145"and#x0D; Length: 2.110"and#x0D; O.D.: 0.500"and#x0D; and#x0D; This is the correct length for Gen III-IV heads except for LS7 use part number BTR-311-2244 for Gen V and LS7.and#x0D; and#x0D; WILL NOT WORK WITH TYPICAL AFTERMARKET HEADS WHICH REQUIRE AN O.D. OF 0.5015" Check with your cylinder head manufacturer for details.
USA Made Powdered Metal For OEM Cylinder Heads