You may have ADD but SOME of us here, not saying who, but some, have OCD and WE NEED TO KNOW! After all, it only needs four things to run. Enough compression, properly time spark, air a fuel. If it has those, it has to run. It has no choice. It may not run good. Just for info sake, the big block Ford six, (240/300) has timing gears. No chain. Stock ones were fiber. One way to tell if it has sheared off some teeth and is now out of cam timing, is to yank the valve cover, rotate to motor over to TDC and look at the rocker position on #1. It will either be on the compression stroke or the valve overlap position. Rotate the motor till its at TDC on the overlap position. If the rockers are opening both the intake and exhaust valves evenly, the cam timing is close enough. You can rotate the motor a little bit either way, and both valves will see some movement. If they are not even, or close to it, maybe one open some and the other not, then perhaps some timing gear teeth got sheared off. Or, quit fiddlin' around and just swap out the motor!
The Jalopy Journal
