replacing lt1 spark plugs
TECH Senior Member
Joined: Nov 2001
Posts: 7,234
Likes: 1
From: Mississauga, Ontario
Originally Posted by 94 z28 ss
what the esiest waY to change spark plugs on a 94 z28 lt1. thanks
Seriously, those things are a bitch, I paid a friend to do mine when I had an LT1. It just takes too damn long.
Teching In
Joined: Jan 2006
Posts: 11
Likes: 0
just get a few extensions, u-joints , sockets and wrenches. jack the car up so you can easily get under it, and start at it. cylinders 1-4 you can get to from the top. 5-8 you should get to underneath. it seems like #6 and 8 are the the worst. you have the y pipe in the way. But I did all mine in about two hours, without remiving any parts. It isn't that bad, just plan on it taking a long time. Good Luck
i did them on a friends car. I got a few from the bottom. then i rmoved the alternator and got a rest from the top. i ended up doing most of them by feel since i couldn't see them, and i just crossed my fingers. it just takes some patience. when i swapped her plugs i found 4 or 5 autolite pluges, and the rest were the original AC delco's with about 140k miles on them 
i guess the other owner got tired of busting his knuckles
i guess the other owner got tired of busting his knuckles
https://ls1tech.com/forums/general-maintenance-repairs/380691-change-your-own-spark-plugs-take-get-serviced.html
..page 6... some specific tips from when I did mine a little while ago.
..page 6... some specific tips from when I did mine a little while ago.
On The Tree
Joined: Aug 2005
Posts: 122
Likes: 0
mine were'nt that bad but maybe I have smaller arms to fit and reach but some u can reach from the top with a u-joints then go to the bottom of the car and reach another, but still took me a couple hours. The alternator one is a pain, have the remove it to get the front spark plug.
