Can't find my earlier post where I think someone answered my question(s). Getting ready to put in new plugs this weekend. Have my 16 plugs. Any special tools needed to do this? Are the bolts sae or metric? Would anyone know of the size of wrench/sockets etc I will need to do this?

thanks for any help

Never done coil pack just old school plugs.

 

Wile,

Don't remember the size of the bolts for the coil packs. Standard metric size (if I remember correctly) found in any metric tool set. Same for the plugs, standard plug socket. If you have the earlier Hemi like me you will have the coil pack with plug wire crossing over to opposite bank. I found it safer to do one cylinder at at time, even if the stock wires are marked. 8 coils and wires can get confusing. I copied the flowing procedures from service manual (it will give you the torque specs):
Note, I would blow out any debris before removing the plugs

Coil removal--
Before removing or disconnecting any spark plug cables, note their original position. Remove cables
one-at-a-time. To prevent ignition crossfire, spark plug cables MUST be placed in cable tray (routing loom)
into their original position. An individual ignition coil is used at each cylinder.
The coil mounts to the top of the valve cover with two bolts . The bottom of the coil is equipped with a
rubber boot to seal the spark plug to the coil. Inside each rubber boot is a spring. The spring is used
for a mechanical contact between the coil and the top of the spark plug.
1. Depending on which coil is being removed, the throttle body air intake tube or intake box may
need to be removed to gain access to coil.
2. Unlock electrical connector by moving slide lock first. Press on release lock while pulling
electrical connector from coil.
3. Disconnect secondary high-voltage cable from coil with a twisting action.
4. Clean area at base of coil with compressed air before removal.
5. Remove two mounting bolts (note that mounting bolts are retained to coil).
6. Carefully pull up coil from cylinder head opening with a slight twisting action.
7. Remove coil from vehicle.
8. Before installing spark plug cables to either the spark plugs or coils, or before installing a coil to a
spark plug, apply dielectric grease to inside of boots.
Coil install--
1. Using compressed air, blow out any dirt or contaminants from around top of spark plug.
2. Before installing spark plug cables to either the spark plugs or coils, or before installing a coil to a
spark plug, apply dielectric grease to inside of boots.
3. Position ignition coil into cylinder head opening and push boot onto spark plug. Twist coil into position.
4. Install two coil mounting bolts and tighten to 12 N·m (105 in. lbs.).

Plug removal--
Eight of the 16 spark plugs are located under an ignition coil; the other 8 are not. If spark plug being removed is
under coil, coil must be removed to gain access to spark plug. Refer to Ignition Coil Removal/Installation and
observe all CAUTIONS and WARNINGS.
Before removing or disconnecting any spark plug cables, note their original position. Remove cables one-at-a-time.
To prevent ignition crossfire, spark plug cables MUST be placed in cable tray (routing loom) into their original position.
Refer to Spark Plug Cable Removal for a graphic.
Before installing spark plug cables to either the spark plugs or coils, apply dielectric grease to inside of boots.
1. Remove necessary air filter tubing at throttle body.
2. Prior to removing ignition coil (if coil removal is necessary), spray compressed air around coil base at cylinder
head cover.
3. Prior to removing spark plug, spray compressed air into cylinder head opening. This will help prevent foreign
material from entering combustion chamber.
4. Remove spark plug from cylinder head using a quality socket with a rubber or foam insert.
5. Inspect spark plug condition.

Plug install--
1. Special care should be taken when installing spark plugs into the cylinder head spark plug wells. Be sure the
plugs do not drop into the plug wells as electrodes can be damaged.
2. Start the spark plug into cylinder head by hand to avoid cross threading aluminum threads. To aid in installation,
attach a piece of rubber hose, or an old spark plug boot to spark plug.
3. The 5.7L V-8 is equipped with torque critical design spark plugs. Do not exceed 18 N·m (13 ft.. lbs.) torque.
Tighten spark plugs.
4. Before installing spark plug cables to either the spark plugs or coils, apply dielectric grease to inside of boots.
5. To prevent ignition crossfire, spark plug cables MUST be placed in cable tray (routing loom) into their original
position. Refer to Spark Plug Cable Removal for a graphic.
6. Install ignition coil(s) to necessary spark plugs. Refer to Ignition Coil Installation.
7. Install spark plug cables to remaining spark plugs. Remember to apply dielectric grease to inside of boots.

Have fun as this is not hard, just a little time consuming.

PS your previous post is 4 posts down. Ror some reason the posts seem out of date order, so click on "Last Post" heading to put them back in date order.