05-08-2020, 09:12 AM | #1 |
Drives: chevy camamro SS Join Date: May 2020
Location: Tennessee
Posts: 7
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what spark plugs for N/A?
Guys with aftermarket camshafts, what spark plugs are you running? 1 step colder than stock? 2 steps colder? Stock heat range? I installed ltr7-ix's when I did my cam swap and ever since the car has been running like crap with a bad misfire. Yes it has been getting tuned, just not sure where the issue is. Throttle response is awful, the car sometimes will die at a stop, it bucks, etc. Cam is a GPI SS4. Thanks in advance
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05-08-2020, 06:50 PM | #2 |
Drives: 2018 Chevrolet Camaro 2SS 1LE 6M Join Date: Jul 2019
Location: California
Posts: 283
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I tried Brisk RR12's based on a suggestion from the tuner at dyno where I baselined, but my car misfired at idle and at WOT. I went with NGK 4344's after reading a bit on this forum, and the car has run well with them. For an N/A car, you can run the stock heat range plugs. I would not recommend anything more than 1 step colder than stock.
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Bolt-ons.
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05-18-2020, 12:02 AM | #3 |
Drives: 2017 2SS M6 Join Date: Jun 2013
Location: WNY
Posts: 7,071
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you dont need to change plugs until you go forced induction.
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real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1
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05-18-2020, 10:30 AM | #4 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,789
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I don't think your car should be running bad with a 7 heat range even though you shouldn't need that cold of a plug for your setup. My car runs fine with LTR-7ix and e85.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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