i have a 67 mustang coupe with a 302 and when starting the starting make this loud gridding noise? can anyone tell me what this is?

 

it might be the starter, starting to go out.....it sounds like a big crank right??

 

im guessing one of two things:

the starter is worn like option said, take it to the local autozone or something to have them check it out.

or, the starter doesnt match up with the flywheel

 

I have just gone through this problem with my 1966 coupe.Most early mustangs and falcons suffered the same problem.
There can be three things that contribute to this.Firstly if your start solenoid near your battery is oldish,replace it with a new one.When they age the bridging contacts can be pitted etc and only deliver 11/10 volts to the starter instead of the full 12 volts.You can do a simple voltage check on the starter motor side of the solenoid on starting.
If that doesn't solve the problem check the starter motor throwout or bendix to see if it is damaged where it engages the flexplate ring gear.You have to remove the starter to do this.If you have also replaced the throwout and it still does it you may need a new flexplate and ring gear.This means the transmission needs to be removed.That's the stage I'm up to now.
Another thing to look for as was in my case is to make sure no one has added extra spacers or washers to the starter motor in trying to guess the answer to the problem.
If you measure the distance on the starter from where the starter motor bolts to the bellhousing to the far edge of the bearing behind the throwout gear when it is fully extended it should be less than the distance of the mounting surface of the bellhousing to the flex plate.
The throwout on the starter needs to engage the ring gear as much as possible without the bearing behind it fouling the flexplate on complete extension.
I hope I sound clear enough here :-)
Ron

 

ok i will check this out, thanks