Need some help guys. 68 mustang with 289, t-5, 1406 carb. Having issues with car staying running when up to temp. Car starts fine and runs fine but once up to 165-190 degrees it just dies while idling. I’ve verified timing I believe, adjusted carb, set distributor, vacuum test at carb is 16-17. Originally had an electric fuel pump that didn’t always kick on so I thought that was issue and replaced with a mechanical pump. Still having issue and I’m at a loss. Could it be ignition switch...

68-289 dies at idle once up to temp