Hi guys, I have a timing issue with my freshly overhauled 250. Info-- .030 over, 268 comp cam, clifford intake and exhaust, HEI, 390cfm Holley. The stock timing is advertised at 6-8 deg BTDC. To get it to run I estimate it closer 16 -18 deg BTDC, it is not even close to the timing tabs or the timing cover. It seems to run O.K. with an expected slight lope. I have the vac. to the distrutor off. I am 99.99% sure the timing marks were aligned on the timing gears. When adjusting the valve I went 1 complete turn past zero lash. I buddy of mine said that was to much only needed 1/4 to 1/2 a turn. I just went by the book. I just thought you guy might have some ideas before I take the oil pan an timing cover off to double chech the timing marks.
