Gap on plugs

[98maro]

I'm bout to change the pulgs on my 00 ss
what is the gap on the plugs?
Thanks
I checkd on the car bt I couldn't find anything

[98maro]

Any help?

[pajeff02]

.045" to .052" for TR55's seems to be the consensus on here. Are these what you are running?

[cammed goat]

Yep. I keep mine at .45 on my NGKs.

[DaddySS]

The book calls for .060

1.Inspect each spark plug gap. Adjust each plug as needed. Specification Spark plug gap: 1.524 mm (0.060 in).
2.Hand start the spark plugs in the corresponding cylinders. NOTE: Refer to Fastener Notice in Service Precautions.
3.Tighten the spark plugs. Tighten
•Tighten the 3.8 L engine spark plugs to 27 N.m (20 lb ft).
•Tighten the 5.7 L engine spark plug on a NEW cylinder head to 20 N.m (15 lb ft).
•Tighten the 5.7 L engine spark plug on subsequent installations to 15 N.m (11 lb ft).

If you are using the new iridium plugs the gap is .040

This bulletin is being revised to add the Chevrolet SSR and the 2005 Pontiac GTO. Please discard Corporate Bulletin Number 03-06-04-060A (Section 06 - Engine/Propulsion System).

^ A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design the gap of the spark plug has also changed.

^ The new spark plug P/N 12571164 with AC Delco P/N 41-985 is gapped to 1.01 mm (0.040 in) when the spark plug is made.

Notice: The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result. Any new spark plug found to not be properly gapped should not be used.



For regular plugs like NGK TR55s on a modified engine, start with .060 and reduce the gap by .004 for every 50 HP you add.

[cammed goat]

Hmmm...this is good to know. Hopefully I have mine right with the cam in it.

[98maro]

Thanks for the help
I'm gonna put the acdelco rapidfire
datz all I can aforrd now
wat u guys think?

[rkh3]

OK, this will sound like a stupid question. How do you get to the plugs/wires on the passenger side of the engine?

[sunsetorangess]

OK, this will sound like a stupid question. How do you get to the plugs/wires on the passenger side of the engine?

Everyone has a different method:
One way is to get the last two plugs from under the car, i personaly use a spark plug socket and a 7/8" rachet wrench to back it out.
Some people remove the coil packs and get them from the top, either way works just fine, some find one way easier than the other.
J

[98maro]

It's very hard
on mine it's harder than the 98 cuz the 00 has the coils bracket. It makes it harder but I think if u remove em will make it easier

[cammed goat]

A buddy of mine takes the coils off to get to the plugs.

[98maro]

That would be the best way
you get more space

[sjsingle1]

spark plug gap should be a sticky........i use .060 on my champion IRs

[98maro]

I was gonna put mine on 50"

[SteveC]

The book calls for .060

1.Inspect each spark plug gap. Adjust each plug as needed. Specification Spark plug gap: 1.524 mm (0.060 in).
2.Hand start the spark plugs in the corresponding cylinders. NOTE: Refer to Fastener Notice in Service Precautions.
3.Tighten the spark plugs. Tighten
•Tighten the 3.8 L engine spark plugs to 27 N.m (20 lb ft).
•Tighten the 5.7 L engine spark plug on a NEW cylinder head to 20 N.m (15 lb ft).
•Tighten the 5.7 L engine spark plug on subsequent installations to 15 N.m (11 lb ft).

If you are using the new iridium plugs the gap is .040

This bulletin is being revised to add the Chevrolet SSR and the 2005 Pontiac GTO. Please discard Corporate Bulletin Number 03-06-04-060A (Section 06 - Engine/Propulsion System).

^ A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design the gap of the spark plug has also changed.

^ The new spark plug P/N 12571164 with AC Delco P/N 41-985 is gapped to 1.01 mm (0.040 in) when the spark plug is made.

Notice: The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result. Any new spark plug found to not be properly gapped should not be used.



For regular plugs like NGK TR55s on a modified engine, start with .060 and reduce the gap by .004 for every 50 HP you add.

100% correct, right on the money, I have my TR55's gapped @ .055.

SteveC

[cammed goat]

So...with an aftermarket cam, what gap should I run?

[98maro]

Good question

[sjsingle1]

from what i understand from dr jacobs.......he suggests using as much gap as you can get away with.....try experimenting

http://www.auxiliumtraining.com/Jacobs.htm

[DaddySS]

So...with an aftermarket cam, what gap should I run?

Well let's say you're tunning 255s at .060 stock and your cam and tune have gotten you an extra 50 HP, you want to probably set them at .055. If you're running iridiums at.040, leave them at .040.

[cammed goat]

Ok.