here is a question. today me and my grandpa checked the timing in my truck and it was out. he figured it was about 20 deg btdc. so we got it right around 10 deg btdc and it runs alot better.
my question is if the timing chain streched would it go that far out of wack. is about time to start thinking about a new chain. i do not know if it has ever been replaced.

 

I don't know whether or not the chain stretching would cause it to go that far.....but depending on the miles.....I'd go ahead and replace it with a double roller timing chain while you're in there.....better than having the chain snap and binding the engine up...does all kinda of things then...strips the dizzy gear bend pushrods/valves compresses the lifters and it can do a whole mess of other things.

 

you did remove the spout to check timing, right?

 

i do believe that i removed the spout connector. it is coming out of the wiring harness coming off the ignition module on the side of the dist. correct? it has two wires and has a little cap that i just removed.

after doing the timing the pre-iginition is gone. and it runs alot smoother. i was getting a lot of noises and ticking coming from the engine while going at highway speeds, i don't have a tach so i am not sure what rpm it is running at at 55 mph or higher. now i have to work on the idle and smoothing it out and i will be pretty happy.

 

how long was it that advanced?

 

Put a breaker bar on the harmonic balancer bolt, remove the distributor cap, rotate the engine to TDC. Then have someone hold the distributor rotor while you move the engine forward, stop, then backwards. See how many degrees the crank rotates where the rotor does not move. On my 460, I had about 8 degrees of slop, which was not horrible. I'm just getting it up and running again today after installing a new FRPP timing set. If you have slop, consider replacing the chain. If it runs good now, then worry about something else.

 

i would probably say after after talking to my dad that it wasn't advanced it was retarded. because he said that it would burn a hole in top of the piston.