best spark plugs and leads

[macca_779]

Only leads i have found to fit as well as stock ones are the MSD red 8.5mm super conductor leads. a lot less resistance than the standard leads and tougher.

plugs, only performance NGK TR5 grooved (from the USA). no platinum tips falling off.

I would get the leads and plugs from a speed shop on ls1tech.com, or ebay, so you know they are the genuine USA items.

Some people here try selling NGK grooved plugs as TR5's when they are not TR5's, they are shorter and dont enter the combustion chamber deep enough. so they make shit power. They have to be imported from the US. NGK Australia doesnt import or sell real TR5's in OZ. The TR5's and TR6's are specially made in the US for the LS1/2 motors and are exact length of the standard holden platinums. BPR6EF-15's are shorter and not for the LS1, they work, but make a good bit less power.

Bullshit BPR6EF's aren't meant for LS1's.. Who told you that rubbish. Hell GM seems to think they suit LS1's.. But what would they know.
The -15 means a 1.5mm gap too. Which as you can see below is what is recommended.

[iamhappy46]

EDIT: I was wrong. BPR6EFS is 6mm shorter than NGK recommened plug.

[macca_779]

BPR6EIX-15 are the same length as the factory fitted spark plugs. Compared them side by side when I installed them, also checked with the NGK recommended PZTR5A(or whatever it is) spark plug.

Yep PZTR5A-15 is the rip off Platinum one that NGK recommends.

[iamhappy46]

PZTR5A is a the right length as the BPR6EFS-15 and BPR6EFIX-15, knew I measued them right Just used the NGK identification in my home copy of the NGK catalogue and they list them both as having a 17.5mm thread length, both protruding electrode, etc

Edit: Also, the USA sourced TR5 plug is not the plug to use in an LS1, the TR55 or TR6 plug is the more suitable heat range.

[r8ls1]

yes TR55 sorry. on the BPR6EF, back when I bought them they were not the same plugs as TR55 or TR6. the electrode protruding into the chamber was shorter, and my car consistently went slower at the track with them in. either NGK later modified the design to suit ls1's, or Holden doesnt care and near enough is good enough. judging from what else Holden differ to the US models, I wouldnt be suprised.

[SS Enforcer]

I used the BPR6EFS-15 plugs in my VE and ran my quickest time at the track with them no complaints from me with em.

cheers

[Ausmartin1]

Research BRISK LGS if you want to try something different. GOR-15LGS
MSD leads are supposed to be the best in the market.

VERY INTERESTING if your chassing those few extra KW's and Nm's !!
http://www.briskusa.com/images/GMHighTechMagazine.pdf

[aftahours]

I used the BPR6EFS-15 plugs in my VE and ran my quickest time at the track with them no complaints from me with em.

cheers

Just put these in my VT with a new set of holden red leads and there is definitely a smoother idle and better power over the worn out iridiums and corroded original leads!

[SLEEPRSV8]

Hi guys,

I own a 02 VY SV8 with only extractors and full exhaust...

Can you please give me a NGK spark plug number for what you recommend. I also would rather put in say a copper head or Iridium than having a plug stay in there for 90k plus..(i.e Platinum )

Thanks guys much appreciated as i want to head to supercheap today and change them...

NGK website recomends : PZTR5A-15 but not sure if this is a Platnum

[cashie]

Hi guys,

I own a 02 VY SV8 with only extractors and full exhaust...

Can you please give me a NGK spark plug number for what you recommend. I also would rather put in say a copper head or Iridium than having a plug stay in there for 90k plus..(i.e Platinum )

Thanks guys much appreciated as i want to head to supercheap today and change them...

NGK website recomends : PZTR5A-15 but not sure if this is a Platnum

Yep, that is the Platinum number..
BPR6EF-15 is the copper standard plug.

[SLEEPRSV8]

Yep, that is the Platinum number..
BPR6EF-15 is the copper standard plug.

Chamnpion thanks heaps buddy...

I cannot track down an Iridium part no. any chance you know this bud?

Also will those copper heads be ok for 5000km ?

[iamhappy46]

BPR6EIX-15 Similiar to the Supercharged V6 engine plug but a 1.5 gap

Still using my NGK Iridiums BPR6EIX-15 without a fault. 12.5psi boost with stock plug 1.5mm gap and still going strong

[ova400]

Ok just read through this, but still not sure as most of it went over my head.

I need new plugs for my SS with 240+ cam and heads and am not sure on what would be best - do I just use the recommended one from NGK which is the platinum one (PZTR5A-15) or the copper one (BPR6EF-15)

So any advice would be greatly appreciated.

Thanks
Dave

[PSI 364]

Dave, go the BPR6EF-15 they are a hell of alot cheaper and have served me well.

Just took them out for the blower install and they look perfect after 6 months use.

Mick

[ova400]

Dave, go the BPR6EF-15 they are a hell of alot cheaper and have served me well.

Just took them out for the blower install and they look perfect after 6 months use.

Mick

Thanks for that