cam walk

When try to set the timing on a lock out distributed, as I rev the engine the timing climbs with rpm. Does this sound like cam walk, if so what needs to be done to fix it?

If the cam is walking in a Big Block Ford something is absolutely wrong as cam thrust should be no more than .012" end play.

[quote="rmcomprandy"]If the cam is walking in a Big Block Ford something is absolutely wrong as cam thrust should be no more than .012" end play.[/quote
Thanks Randy, anything else that could cause the timing to move on a lock out distributor when you bring the rpm's up?

Is it locked out properly?

What box are you running? Is it programmed right?

Is your timing light working properly?

Check the wires to the distributor, they should be twisted, isolated and not in contact with metal parts.

I got few test I'm going to try. Spoke with a tech at msd.