I started the swap on my 98 gt about 2 months ago and have been running into this problem since. i got the heads off either a 2000 or 01 gt and had them reworked at a machine shop. when we put the heads on we cant seem to get the timing right, it keeps hitting somthing. when i look down the plug whole it looks like a valve is hitting a piston. if anyone knows anything or can help please reply. I reused the same cam gears off the 98 and wondering if that may be the problem. but anyhow, i dont know much about mechanics.

 

https://mustangforums.com/m_618453/tm.htm

Look in this thread, don't know if it will have your answers but it's a start.

 

did you use the stock cams?

 

tell me how much a difference it makes whn your done. i also have a 98 gt and i wanna do the pi swap.

 

i would suggest........you make 100% sure that you are using the drivers side cam on the drivers side and the passanger side cam on the passanger.

easy way to tell:
look at the first lobe on each of the cams, from the front of the engine.

on the drivers side, if the cam where to turn counterclock wise, the #1 lobe should make contact with the lash adjuster first.
on the passanger side, it should be the #2 lobe making contact before the #1 lobe. (intake lobe makes contact before the exhaust lobe on each cylinder. in my example, im comparing the #1 cylinder lobes (passanger side) to the #5 cylinder lobes (drivers side)).

 

it makes a hell of a difference. i did the PI intake first, then a few months later the PI cams, then about 6 months later the PI heads. each time i installed one of the PI parts, it makes a noticeable difference.

 

I gained 72 rwhp from a PI swap and tune. Yeah, definetly worth it.

 

I reused my 98gt cam gears and timed it like the haynes manual said to and didn't have any timing issues. If you do in fact have windsor heads (13/14 bolt valve covers) you need to get bigger bolts that bolt the timing case cover to the heads also.

 

thanx im planning on doing the full swap by the end of the summer. I kno i can get the parts used seperatly but i would rather buy a kit for 1500 and have all the parts i need.

 

IM PRETTY SURE IM USING STOCK CAMS.