fords can shear cam pins . if the right dowle pin is in the cam it can dead head on cam bolt washer giving to a false Tq reading on the cam bolt and then back off then shear cam dowle pin . the pin can shear in the dist as well .if it did this would drill the gear and shaft then go up to 3/16. i like the double rolled pins if you can find one Msd use.s them mc master car i think has them