ok so heres the problem. i got a 79 f150 with a 351m in it. now keep in mind this truck was sittin for a long time when i got it. i had bent 2 off the pushrods awhile back and when i had the valve covers off to replace them, this thing had so much slugde and grime in there it was unbelievable...

ok guys im new here. i got a 79 f150 with a 351m and a 4spd and im kinda stumped on this one. heres the thing, if i wake up in the morning and start the truck, it will fire right up no prob. and i can drive the truck all day, as long as i dont shut it off. when i shut it off it will crank and...