Which type of spark plug for Chevy 5.9 with Holley carb.

[luger]

Hello

I'm a new member....
Which type of spark plug for Chevy 5.9 with Holley HP Competition ?

[Boosted LS1]

If the engines stockish then I'd look for an NGK equivalant. Do you have an idea what the stock plug should be?

Boosted.

[luger]

Boosted LS1 said:

If the engines stockish then I'd look for an NGK equivalant. Do you have an idea what the stock plug should be? Boosted.

The Champion RC12YC or Equivalent NGK are OK ???

[Boosted LS1]

luger said:

Boosted LS1 said: If the engines stockish then I'd look for an NGK equivalant. Do you have an idea what the stock plug should be? Boosted. The Champion RC12YC or Equivalent NGK are OK ???

If there's an NGK equivalent for whatever the stock plug is then I'd use the NGK, good plugs I don't use Champions, ever.

Boosted.