i have a 1974 comet the trans went out it has the 250 under the hood i need to know if it has a 9in or 10in on the flywheel
Ahhhh, I'll guess your talking about a manual transmission car and you want to know what size the clutch is. If so. it should be a 10 inch.
and if it's auto it should have a 157 tooth 10.5" flywheel or a 164 tooth 11.5" flywheel (technically called a flexplate)