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what spark plugs and gap for H/C car

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Old 02-22-2006, 07:11 PM
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Default what spark plugs and gap for H/C car

search isnt working to good so .Looking for what you guys recommend as far as spark plugs and gap to run for a h/c car

ls6 243 heads 10.8/1
228/228 112 cam
should be approx 420 rwhp if that all helps. Thanks
Old 02-22-2006, 07:17 PM
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I dunno, but I'm having a cartek stage 2X H/C put on my car in about a week so I'll let you know if anything changes with the plugs. You may have to step up your injectors, i'm going to try to max out my factory ones but i may have to go higher. Look for my post in like a week.
Old 02-22-2006, 07:30 PM
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yeah i got the 42# svo green tops going in.I dont want to try and max out the factory ones and run to lean.I have hp tuners and was running 90% duty cycle with approx 350 rwhp on my stock 26#ers.
Old 02-22-2006, 07:58 PM
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I'm running TR5's at .045 with 433hp.




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