current favorite spark plugs on a c4
Thread Starter
Team Owner
Joined: Dec 2007
Posts: 20,974
Likes: 261
current favorite spark plugs on a c4
I have exhaust of for the LT's and I am going to do plugs right away.
Anything better out there lately, or any that seem to work well in an L98?
(heat wise ETC)
Oh any heat shields for the wires?
Anything better out there lately, or any that seem to work well in an L98?
(heat wise ETC)
Oh any heat shields for the wires?
Last edited by pologreen1; Mar 12, 2010 at 09:28 PM.
Safety Car
Joined: Dec 2007
Posts: 3,616
Likes: 5
From: Sandhills of North Carolina
I''ll give you a deal on some red shields if you decide you need them. Never been used.
Drifting
Joined: Jun 1999
Posts: 1,874
Likes: 1
From: Garden Grove CA
Unless you have a power adder or changed to a different style of cylinder heads - the stock spark plug in the brand of your choice is what you should use.
Adding the exhaust from an LT1/4 will not affect your spark plug heat range.
Thomas
Adding the exhaust from an LT1/4 will not affect your spark plug heat range.
Thomas
Thread Starter
Team Owner
Joined: Dec 2007
Posts: 20,974
Likes: 261
I just meant the brand. I have it off, for the headers and I have duals. I will probably stay with stock brand, I have never run anything else in vettes before, but I would try some thing new if others had good experiences.
Safety Car
Joined: Dec 2008
Posts: 3,588
Likes: 10
From: North New Jersey
Read this!!!
Its good stuff!
http://www.streetmachineclub.com/upl...ugs-lowres.pdf
http://www.streetmachineclub.com/upl..._PLUG-DATA.pdf
Its good stuff!
http://www.streetmachineclub.com/upl...ugs-lowres.pdf
http://www.streetmachineclub.com/upl..._PLUG-DATA.pdf
Thread Starter
Team Owner
Joined: Dec 2007
Posts: 20,974
Likes: 261
Read this!!!
Its good stuff!
http://www.streetmachineclub.com/upl...ugs-lowres.pdf
http://www.streetmachineclub.com/upl..._PLUG-DATA.pdf
Its good stuff!
http://www.streetmachineclub.com/upl...ugs-lowres.pdf
http://www.streetmachineclub.com/upl..._PLUG-DATA.pdf
Safety Car
Joined: Dec 2008
Posts: 3,588
Likes: 10
From: North New Jersey
What do you think? This read was passed on to me a week or two ago from a fellow forum member and I really like it!
If you can find some of those mystery plugs then you will be ahead of the game!!!
FYI, the test was done on a Corvette LT1 (C4) motor so... Gives us pretty good numbers!
If you can find some of those mystery plugs then you will be ahead of the game!!!
FYI, the test was done on a Corvette LT1 (C4) motor so... Gives us pretty good numbers!
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Instructor
Joined: Jan 2010
Posts: 225
Likes: 0
From: wilmington De
very right!! I had the bosh +4 on my camaro and the thing was running rough i had to replace them with stock acdelco plugs. Since then i only use stock plugs!
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 78
From: Monroe OH
NCM Sinkhole Donor
I've ran NGK's in my autox car for 5 years, pulled a couple out to inspect recently and still look great. Run A/C Delco stock plugs in my stock car and seem to be fine. For plug wires, I run A/C Delco 8mm wires on both cars, no issues.
Burning Brakes
Joined: Nov 2004
Posts: 897
Likes: 12
From: Land of Whiskey Rebels, PA
I have that magazine. Some surprising numbers, there.
I'd say get the AC/Delco Rapid Fire plugs. I just don't think spending $17.60 extra for 0.6 HP is worth it ($2.20 x 8 = $17.60) versus the AC/Delco Professional.
Just my two cents.
I'd say get the AC/Delco Rapid Fire plugs. I just don't think spending $17.60 extra for 0.6 HP is worth it ($2.20 x 8 = $17.60) versus the AC/Delco Professional.
Just my two cents.
Race Director
Joined: Feb 2003
Posts: 11,671
Likes: 20
From: Lake Wylie SC
For what it's worth, I put NGK TR55IX Iridium plugs in mine about 5 years ago. They still look new. Even the gap stayed the same. Now I must be honest, I only put about 20K on them even with 2 years of auto crossing.
Drifting
Joined: Jun 1999
Posts: 1,874
Likes: 1
From: Garden Grove CA
Kimmer, after you pull up the link if you look towards the top you will see a menu tool bar - look for where it has % and note that there is a "+" and a "-". Select the "+" until you get to 100% or whatever makes it readable for you.
Thomas
Thomas
Safety Car
Joined: Jan 2004
Posts: 3,759
Likes: 8
I wouldn't get the regular AC Delco plugs. I had some installed, and a month later. I noticed all the plugs bases had rusted. The OEM's were made of metal that wouldn't rust, just like the current Rapid Fire plugs. I'm guessing those regular AC Delco plugs are made by Autolite, as they both have that dark metal that will rust.
I replaced them with the copper NGK plugs which won't rust.
I replaced them with the copper NGK plugs which won't rust.
Instructor
Joined: May 2005
Posts: 234
Likes: 0
From: sidney ohio
Mystery plug resembles the plugs that come in a rx7 rotary engine, only difference is the rx7s has a crosshatch in it. alright i found them they're also made by a company Torque master, "problem claim is that the large center electrode has broken in a few engines ruining the cylinder and piston" i think a spark is a spak fuel/compression is the main worry when it comes to powerband.
Last edited by sick-punk; Mar 15, 2010 at 12:27 AM.