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#1
02-03-2005, 10:47 PM
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do spark plugs make a power difference
I just swapped my 305 for a 350 in my 93 k1500. It doesn't seem to me like it has the power it should. I didn't replace the spark plugs that were already in the 350 and they're at least 4 or 5 years old. Will replacing the plugs, wires, cap, and roter make a noticable difference. Also it misfires once and a while.
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#2
02-03-2005, 11:30 PM
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Re: do spark plugs make a power difference
What kinda plugs did you put in?
If they aren't AC Delco platinum (like what comes factory) then yank 'em. No bull$#*%. I have tried other plugs, nothing compares to the OEM AC Delco platinum tips. Nothing.
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#3
02-04-2005, 12:25 AM
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Re: do spark plugs make a power difference
Replacing the stuff you mentioned is probably a good start. I dont think there is that much difference in power between a 350 tbi and a 305. The 350 will have more torgue but I don't know how noticeable it will be.
__________________
2009 Silverado 1500 2002 Camaro Z28(rebuilder) 2005 Yamaha GP1300R
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#4
02-04-2005, 07:42 AM
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Your probably not going to notice a HUGE power difference but you will definitely want to change all that stuff. It misfires so you know there is something wrong, just change everything and even if you don't notice any more power, you know it won't misfire.
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R.I.P. Andy...It was an honor to have known you.  '01 Camaro SS - SLP Short Throw Shifter, Granatelli Air Lid, blue neon underbody kit '92 Chevy 1/2 ton 4X4 - 350 w/ 190,000 miles and in desperate need of a rebuild. '86 Chevy S10 - 350 w/ 400 Turbo trans, B&M Pro-Ratchet, 4.56 Posi, 350 is gone and slowly being replaced.
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#5
02-04-2005, 04:03 PM
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Re: do spark plugs make a power difference
i changed it all and I noticed a little bit of a difference. It doesn't misfire anymore so that's a good thing. The old plugs and wires were really bad anyway.
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#6
02-04-2005, 09:44 PM
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Re: do spark plugs make a power difference
You may not notice a huge power difference, but with the changes you've made, you should notice an increase in fuel economy.
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Thought for the Day… Alcohol does not make you fat - It makes you lean... against tables, chairs, floors, walls and ugly people.  If a prostitute here in America loses her job to a prostitute in India , is that considered "outwhoring"??-Jay Leno
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#7
02-05-2005, 02:03 PM
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Re: do spark plugs make a power difference
What brand of plugs/wires are you using??
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#8
02-06-2005, 11:36 PM
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Re: do spark plugs make a power difference
autolite plugs and napa wires
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