[Doug orange]

Well have not degreed the cam, just want to make sure before I rip into it. ford 390 rebuilt, new timing chain and gears bored .80 over, Elgin E965P cam, Mallory unilite distributor, it will not run unless the timing is 35BTC initial timing at 750rpm manifold vacuum is at 12psi when I advance it up it will not ping the old 390 would ping at about 12BTC is it posable that the timing chain is off one tooth? Any help before I rip into it.