Reply to "stock 351 correct timing"

Depends on the year of mfgr. The simplest way is to let the engine tell you what it needs, by advancing the static timing at 2 degree increments with the fuel you expect to use. Test-drive the car in your uisual manner until you hear rattling of pre-ignition, then back up 2 degrees and leave it alone. There's nothing sacred about a number; the engine as it is today, on today's fuel, driven in your normal manner, should dictate the static and total advance. Early '71-72 engines, on 100 octane fuel got 6 degree static timing while later engines got 10-16 degrees static but also had factory-retarded camshafts (4 degrees I think) for smog reasons.