How is the best way to find top #1 TDC? I tried cranking the motor until the timing marks were aligned to the mark. But then wasn't sure where #1 would be on the distrib cap ? 153624 I was told, from the front of motor #1 last near firewall would be #4 ......but how do I know where that correlates coming from the rotor and cap? I had pulled #1 plug and placed a screwdriver down the hole, but it doesn't move as I crank the motor....like something is blocking the driver from making contact with the piston..... D24 1948 Dodge Coupe Deluxe flat six