Spark plug NGK 6510

Vhp04 · 01-22-2022, 11:36 PM

I got A little over 1,000 rwhp, and I just put this NGK 6510 spark plugs but they came at .040 is that good or should I close them down a bit. want my car to be running the way it should it won’t hurt it if I leave it how they came?

Camaro1973 · 01-23-2022, 12:17 AM

Quote:

Originally Posted by Vhp04

I got A little over 1,000 rwhp, and I just put this NGK 6510 spark plugs but they came at .040 is that good or should I close them down a bit. want my car to be running the way it should it won’t hurt it if I leave it how they came?

Depends on your boost bud. If over 15lbs of boost gap them at .028

CW3SF · 01-23-2022, 08:44 AM

What about for a ported stock blower at say 10–12 lbs of boost? .032ish?

*radz28* · 01-23-2022, 07:11 PM

I think JRE's been pushing around .040" for up to that boost.

I'm at about 700, and just put in 6509s, and with about 15-lbs, and .040", it sure is snappy.

Camaro1973 · 01-23-2022, 07:26 PM

Quote:

Originally Posted by radz28

I think JRE's been pushing around .040" for up to that boost.

I'm at about 700, and just put in 6509s, and with about 15-lbs, and .040", it sure is snappy.

It’s not going to make anymore power or run better at .040. I can’t run .040 on mine, I tried once, misfires once it gets close to 15psi. The coils/wires etc have enough voltage to jump the gap but blowout becomes an issue.

*radz28* · 01-23-2022, 07:28 PM

Quote:

Originally Posted by Camaro1973

It’s not going to make anymore power or run better at .040, a burn is a burn. I can’t run .040 on mine, I tried once, misfires once it gets close to 15psi.

I'm only offering what's been posted here, as best as I can remember, and my experience. You're making a lot more power than I, so I don't know that I would be surprised by your experience. I'm certainly no expert

Camaro1973 · 01-23-2022, 07:28 PM

Quote:

Originally Posted by CW3SF

What about for a ported stock blower at say 10–12 lbs of boost? .032ish?

A safe bet IMO would be .032 . It’s not worth risking spark blowout at .040, esp with no difference except a possible smoother idle.

Camaro1973 · 01-23-2022, 07:35 PM

Quote:

Originally Posted by radz28

I'm only offering what's been posted here, as best as I can remember, and my experience. You're making a lot more power than I, so I don't know that I would be surprised by your experience. I'm certainly no expert

I mean if the car is mostly stock esp with no cam running the highest gap is mainly better for idle. I’ve seen no performance improvements with a larger gap.

Basically you want to run the largest gap you can without spark blowout.

Stockish 9-11 psi is good for .040
Modded 12- 13 I like 0.32
14-17 I like 0.28

This is JMO but I think these gaps work best.

SATINSTEEL1LE · 09-18-2022, 01:18 PM

Im going completely stock with just the 2650 going on. Im going to use .035 to be right in the middle. Using the 90mm pulley, so I have no idea how much boost Im going to make. For the record, Magnuson said I could leave the stock LT4 plugs in there and run with that, they did not recommend a plug change but my tuner did.

JSH · 09-18-2022, 01:26 PM

Quote:

Originally Posted by SATINSTEEL1LE

Im going completely stock with just the 2650 going on. Im going to use .035 to be right in the middle. Using the 90mm pulley, so I have no idea how much boost Im going to make. For the record, Magnuson said I could leave the stock LT4 plugs in there and run with that, they did not recommend a plug change but my tuner did.

.035 seems like a bit too much for a 2650, but give it a shot and see

SATINSTEEL1LE · 09-18-2022, 01:34 PM

Quote:

Originally Posted by JSH

.035 seems like a bit too much for a 2650, but give it a shot and see

For an otherwise stock car?

JSH · 09-18-2022, 01:38 PM

Quote:

Originally Posted by SATINSTEEL1LE

For an otherwise stock car?

Odds are you'll be alright

RobZL1 · 09-18-2022, 02:08 PM

Different platform, but I ran both 0.035 and 0.038 gap with TR7ix on my 5th gen ZL1 with about 16 psi. No issues with misfires/blowout.

Camaro1973 · 09-18-2022, 07:26 PM

Quote:

Originally Posted by SATINSTEEL1LE

Im going completely stock with just the 2650 going on. Im going to use .035 to be right in the middle. Using the 90mm pulley, so I have no idea how much boost Im going to make. For the record, Magnuson said I could leave the stock LT4 plugs in there and run with that, they did not recommend a plug change but my tuner did.

You’ll make 16+ psi it at sea level if nothing else is done with the 90mm pulley.
I would gap Them 28-30.

01-22-2022, 11:36 PM	#1
Vhp04 Drives: 2018 camaro zl1 Join Date: Mar 2018 Location: Rapid city, South Dakota Posts: 26	Spark plug NGK 6510 I got A little over 1,000 rwhp, and I just put this NGK 6510 spark plugs but they came at .040 is that good or should I close them down a bit. want my car to be running the way it should it won’t hurt it if I leave it how they came?

01-23-2022, 08:44 AM	#3
CW3SF Drives: 2019 Chevy Camaro ZL1 M6 Join Date: Jul 2019 Location: Sea level Posts: 1,252 View My Garage	What about for a ported stock blower at say 10–12 lbs of boost? .032ish? __________________ Kong Stage X Port, NW103, LPE HPFP, XDI +30 Injectors, ARH Headers, Flex Fuel, JMS Booster, AWE Touring, Elite E2-X CC. Stock heads, stock cam, stock pulleys: Tuned by KingLT1. 740whp Uncorrected on e50

01-23-2022, 07:11 PM	#4
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,181 View My Garage	I think JRE's been pushing around .040" for up to that boost. I'm at about 700, and just put in 6509s, and with about 15-lbs, and .040", it sure is snappy. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

09-18-2022, 02:08 PM	#13
RobZL1 fo'shizZL1 Drives: 2017 ZL1 Join Date: Aug 2017 Location: ATL Posts: 1,281	Different platform, but I ran both 0.035 and 0.038 gap with TR7ix on my 5th gen ZL1 with about 16 psi. No issues with misfires/blowout. __________________ 2017 ZL1 M6 Black \| Maggie 2650 // 103TB // Big Gulp Past Rides- 2014 ZL1 M6 Red Hot \| Tons of mods 2004 CTS-V M6 Silver \| Many mods 1995 Corvette M6 Torch Red \| A few more mods 1992 Camaro M5 White \| A few mods

09-18-2022, 01:18 PM	#9
SATINSTEEL1LE Account Suspended Drives: 21 ZL1 Join Date: Feb 2022 Location: South East Posts: 662	Im going completely stock with just the 2650 going on. Im going to use .035 to be right in the middle. Using the 90mm pulley, so I have no idea how much boost Im going to make. For the record, Magnuson said I could leave the stock LT4 plugs in there and run with that, they did not recommend a plug change but my tuner did.

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