Right spark plug

[Srock]

Just found out my 2002 ws6 has a ls6 block. I put plugs for an ls1 in motor, are they the same plug?

[theorangeguy]

Yep same plugs unless you are running nitrous or some type of power adder.

[2002ssslp]

Yes they are. Use Iridium plugs and you will never need to change them again unless you foul them or upgrade your induction system. I buddy of mine put them into his Silverado truck and just replaced them with 127k on them. Almost no wear.

[pajeff02]

Main difference between the LS1 and LS6 block is better internal venting and probably an increase in overall strength, if I recall.

[Whamhammer]

Yes they are. Use Iridium plugs and you will never need to change them again unless you foul them or upgrade your induction system. I buddy of mine put them into his Silverado truck and just replaced them with 127k on them. Almost no wear.

Even if you had to change the plugs more often, LS1's are nowhere near the PITA that 3rd gen V8s are. Cant speak for 4th gen LT1s.

[2002ssslp]

Whatever plugs you use, put some anti seize on the threads and don't over tighten them. I like to use the Permatex brand.

[Srock]

Yep same plugs unless you are running nitrous or some type of power adder.

[Srock]

Thanks for that info. Glad I don't have to change the seven and eight plugs, they are a pain to reach

[pajeff02]

Couple of tips for future reference -- remove the coil packs, pop the plastic pins up that secure the cowl seal, use a 1-1/2" extension on your ratchet, and go at number 8 from under the car.