Spark plug question

[ezdaar]

No need to change cam with these roller lifters.
Btw, you have to yank the heads to pull the lifters.

Most of if not all of the bolts used on LS Engines are torque to yeild, thos means they are use once only.
You can get by with re using intake bolts and cover bolts, but anything else.

Harmonic balancer bolt, heads, etc must be replaced.

While intake is off, clean it out. Use berrymans B-12 aerosol. Its the best and will do it very quickly.
Be sire to seal the knock sensor harness caps with red RTV silicone.

 

[jason78]

AC Delco 41-962 Double Platinum. See AC/Delco Service Bulletin 13D-070. Amazon probably has the best price and there is an AC Delco rebate going on right now too.

 

[01ssreda4]

Yep those are copper NGKs. Nothing wrong with them but need to be serviced a little more often then the higher dollar plugs. For my Yukon I went back with AC Delco Platinums.