Lingenfelter L950075307 LSA, LS9, LS3, L92 cylinder head dowel pin locator tool v1.0 - Manual (Page 4)

Page 3.
5. Insert the end mill into the drilling fixture
bushing labeled as “A”.
6. Drill the new dowel hole until the bottom of
the set collar contacts the top of the drilling
fixture.
7. Repeat steps 3-6 for the other cylinder head.
8. Throughly remove all drilling debris from the
valley tray and cylinder heads
9. Remove the tape from the cylinder head
ports.
Relocation of the LS3/L92 cylinder head
dowel pins is now complete.