[68StangJurls]

It is possible to do with the engine still in the car but removing the heads is half the work. You will have to remove the radiator and grill and anything else in front of the engine cam location and the entire front of the engine exposing the timing set. Remove the Timing chain and sprockets which will expose the cam thrust plate. Remove the thrust plate and all the lifters, Depending on how long since the last rebuild a build up of varish on the bottom of the lifters may make removing them difficult. It is best to get a cam install tool and carefully remove the cam being carefull not to nick the bearings.

 

[68StangJurls]

The cam is keyed so the timing gear will only fit on it one way so you don't worry about the lobes(if the cam is installed properly the lobes will line up). Then make sure that the crank is at TDC and line up the marks on the 2 gears and your golden. You should definately get a shop manual of some kind for a step by step but it really isn't that difficult. Just be sure to inspect the old set-up before disassembling it to be sure you can see the relation of the timing marks etc... forget about degreeing the cam in until you have a better understanding of a straight up install. Good luck....Lee