I Cant Find The Dipstick Tube Insert Anywhere

I suppose you could have a early model 302 block where the dipstick should be in the timeing cover, but at the same time have a late model timing cover that doesn't have a dipstick tube in it. That would mean you don't have a dipstick opening at all. Like Horse sense said in your other post, it will either be in the pan on the driverside, near the bottom of the block, or it will be on the passenger side of the timing cover in between the block and the alternator (see the pic)