Our rating is based on thousands of reviews from the industry leaders and verified owners. Click here to get all the product details. i used NGK platinum plugs pn TR-55, for a 96 k2500 5.7l vortec heads and they work great. In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. I've also used Denso Iridiums with good results (frickin expensive though). PayPal Accepted. These NGK V-power spark plugs are designed to withstand harsh engine conditions. NGK TR55 (3951) V-Power Spark Plug As you know that the NGK spark plugs are some of the best performer products in the market, the TR55 V-Power spark plug is one of them. I ended up purchasing the NGK equivalent of the 44TLS. TR55 Part Number: 3951 Vehicle: 2004 PONTIAC GTO Engine: V8 5.7 Liter FI V-Power Plug; TR55; @ Gap .060 @ Pricing Our Price: $1.68 www.advancedautoparts.com just goto the store And the tr-5 is gapped at .035 vs. the tr-55 which is gapped at .060. Yeah. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. Choose an item or category to find the specific products you need. These are a 2 prong plug, I just put me second set in yesterday for $3.99 each at Pep Boys. Silikhan Publishing Group & GM-Trucks.com If it is .055 (which I Vortec heads have a 14 mm thread, tapered seat, and typically use a ¾-inch projected nose (.750) reach, small (5/8") spark plug socket. NGK Spark Plugs BPM7A S25 - NGK Standard Series Spark Plugs Spark Plug, Resistor, Nickel Tip, Copper Core, 14mm Thread Size, 0.375 in. Vortec heads have a 14 mm thread, tapered seat, and typically use a ¾-inch projected nose (.750) reach, small (5/8") spark plug socket. Chromium topcoats form a protective oxide on spark plugs that is not effective if scratched. No Nitrous. NGK Spark Plugs (U.S.A.), Inc. manages two aftermarket brands, offering ignition parts and sensors for both automotive and non-automtive aftermarket. Attempts to maintain spark plugs by removing them and cleaning the threads can actually create the corrosive condition that the procedure was intended to prevent. Unsure of which plug is right for you, ask one of our techs for more info! Anyone else hear anything about this? Est. R u running the 44LTS vs the 43LTS for any reason? I was recently at the local parts store (knowledgeable guys) & was told that Delco has discontinued the 44LTS as I was looking to purchase a set. What gap do you recommend on a mildly modified g8 and does it really make a difference if you why go to ebay for Delco spark plugs when your local parts store will probably have them sitting on the shelf? I've run them since I replaced plugs the first time with no problems. Guys running N2O will use the TR6. Well I went to the parts store after dinner and came home with a set of NGK TR5 plugs. All Rights Reserved. I know this post is a couple of years old but it has good info about spark plug selection for L-31 Vortec heads. GMPP 350 HO w/ Iron Vortec Heads - Which Plugs? Vortec Heads 383ci 9.6:1 compression Crosswind Vortec manifold Cam Duration @ .050 = 224 intake, 230 exhaust Lift = .501/.509 Lobe sep = 110 Carburetor = Holley 3310 (750) I bought the Autolite APP605 for a 96 Tahoe 01 X-cab 357 SBC Quick Fuel 650 E-85, Mild cam, Mild Vortec heads, 4L60E, 4:10 gears one wheel blender. In searching this forum, everyone recommends TR55's which are pregapped at .060. NGK spark plugs are installed at the factory dry, without lubrication or anti-seize. Free Returns. Powered by Invision Community. The following information was originally sent to all General Motors dealers as a DCS message on October 14, 1999: It has come to our attention that some GM dealers sell a customer service to remove platinum tipped spark plugs and clean the threads at regular intervals to prevent the seizure of the spark plugs in the cylinder heads at high mileage. $3.08 NGK 3403 TR55GP Spark Plug - Same Day Shipping. Chromate coated spark plugs should not be wire brushed or handled in any way once they are put in service. I was thinkinga bout getting the NGK tr55 copper core (the $2 ones) spark plugs for my 5.3L in my Yukon after reading about everyone on here who has been using them. Vortec heads were on 96-99 C/K 5.7L engines. If they are high dollar platinums, don't cheap out and buy the $1.49 Champions. http://good-times.webshots.com/album/568279446VvVgWO, Powered by UBB.threads™ PHP Forum Software 7.6.0. Are the AC Delco plugs with .715 reach, (R42/LTS-R44 Plugs listed are for OEM 14mm taper seat cylinder heads using The +4 plug was $5.99 each. They feature a unique v-cut in the center electrode. Platinum tipped spark plugs are designed to operate under normal vehicle operating conditions for up to 100,000 miles (160,000 kms) without periodic maintenance. R43LTS (colder) If so, what p/n are you using? We are not NGK Spark Plugs USA. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. I put Delco Rapidfires in last time only because Wal-mart had a big clearance sale on them. Can this be right? Anti-seize can act as a lubricant, altering torque values up to 20 percent, increasing the risk of spark plug thread breakage and/or metal shell stretch. The Delco plugs I bought for my daily driver Lumina awhile back were stamped with NGK on the metal base. When no engine performance concerns are present, platinum tipped spark plugs should not be removed for periodic inspection and cleaning of threads, doing so would compromise the spark plugs ability to withstand their corrosive environment. LOL Dumbest decision of my life. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". I've run NGK TR-55's in my '99 Silverado (5.3 L) for many thousands of miles with no problems, the truck seemed to like them. i ran R44LTS plugs in the vortec heads in my Nova. I have two questions & I'd appreciate your input: 1. I think the NGK are a better plug than AC Delco plugs.. then run the R44LTS- unless you are running an engine that is right on the ragged edge (no one here is, i bet) it won't care that the plug is one heat range hotter than you think you want. Apart from the 5.3L Vortec engines, it also works great with the Chevy 350 5.7L engine. Special insulator nose … ZERO problems. On my vortec heads, I'm using Hedman 1.5" headers with 90* boots on the plugs. Thx. Re: GMPP 350 HO w/ Iron Vortec Heads - Which Plugs? O'Reilly Auto Parts carries NGK. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. Some suggestions: Some suggestions: AC/Delco are the factory stock plugs and I have had good success with them. They have been replaced with a # for Delco platinums, at nearly 3x the cost. By Ive run TR55's since Ive owned my truck. Please follow this diagnosis process thoroughly and complete each step. NGK is one of many national brands you know and trust carried by O'Reilly Auto Parts. yeah, i've been using the NGKs in my Yukon for a while now and they work fine. The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION. By using this site, you agree to our Terms of Use. :rant: LOL Dumbest decision of my life. Secure Online Ordering. (95 - 02 All Passenger Cars with gasoline engines) and (95 - 02 All Passenger Trucks with gasoline engines). Not really a part number. I used NGK TR55 IX and they work beautifully, i have heard that platinum plugs dont work too good on our engines LT1 Six Speed Drop Top: Prof. Products 52mm T.B., CAI, BBK Underdrive Pulley, shortie headers, Magnaflow CatBack, Solomon tune, Z06 Wheels (17"Front 18" Back) NGK Spark Plug: Plug No. They are what's factory listed for a 96-99 Chevy pickup with a 350. 5.0 Mustang Cobra 93-95 w/ GT-40 Heads Thread – 14mm Reach - .708” Socket – 5/8 hex Seat - Taper Stock Heat Range: 5 Gap: .054 Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164); Autolite 764 or thanks for following up. Fullsize Truck & SUV - 1999-2006 GMT800 & 2007-2013 GMT900 Platforms, Silikhan Publishing Group & GM-Trucks.com, 1999-2013 Silverado & Sierra (GMT-800/900), 3.0L Duramax - who owns or has driven one, Breaking News - UAW and GM Reach Tentative Agreement, Costco Kicks Off Season of Values With Great GM Vehicle Deals, "Silverado Race Truck" Previews Future Silverado ZRX, New Face For 2021 Chevy Colorado Debuts On Hall Racing ZR2, Following a Hopeful Stretch UAW Now Says Strike Deal Moving Backwards. Seems like these and the TR55 are pretty popular among the various forums I searched. Sounds like a load of crap to me. Just hit the parts store and ask for 8 NGK TR55's. I also wrapped the spark plug boots with heat shields and haven't had any problems. When I look them up they are in the same heat range. Using straight boots would be problematic. Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. Removing and cleaning spark plugs will introduce metallic debris and brush scrapings into the thread area which may further the corrosion process. What is the correct gap for these plugs? Don't trust biased humans! Reach, Gasket Seat, Each Part Number: NGK-748 I was thinkinga bout getting the NGK tr55 copper core (the $2 ones) spark plugs for my 5.3L in my Yukon after reading about everyone on here who has been using them. This topic is now archived and is closed to further replies. On NGK's website, they call for TR5 copper plugs which are pregapped at .040. Both coated and uncoated spark plugs will have the best chance of surviving a corrosive environment if they are left in position. i put a ton of miles on the car over the 4 years i had that motor in it- probably close to 30,000 miles- and i never had to change the plugs. :yes: Chevy Performance offers several small block engine cylinder heads to replace OEM heads on newer GM small-block V8 engines. I am also running the ACDelco R44LTS plugs but i don't remember what gap. so would NGK TR55 plug or a NGK TR6 be better for me? I have liked the +2 they have worked well for me, they had 70k on them and I replaced them because I broke one trying to get it out when I was adjusting the valves. This design directs the spark to the edge of the electrode which aids in faster spark development, increased ignitability and reducing quenching. and if they don't … I have a 350 engine I built myself using factory Vortec heads. Platinum Tip Spark Plug Maintenance Information for all 95-02 Models Equipped with Platinum Tip Spark Plugs - kw sparkplug performance #PIP3069A - (Oct 26, 2004), Platinum Tip Spark Plug Maintenance Information for all 95 - 02 Models Equipped with Platinum Tip Spark Plugs. Vortec heads uses a whole nother plug thats longer Aftermarket heads could take what ever plug, just depends on what heads At 10:1 I would drop down a heat range or two on the plugs When I was running 462 casting 1966 My 6.0 had NGK's in it!!! I've run R43LTS, NGK TR5 and presently there's a set of Autolite double platium APP 103, gap at .045 with larger cap HEI. ...I'm running the MR43LTS in my heads,with a .045 gap and MSD 6AL,and they run fine, just my .02, Dc. Aright i may sound stupid but i have a 2000 silverado with a 5.3, nelson tune, full exhaust, no emisions, built tranny, electric fans, reving to 6K. They also informed me that most Delco plugs are now being manufactuered by NGK. You can trust us. I'm running AC R43LTS in my vortec head 350. Go to the parts store and ask for standard plugs for that application. 1969 NGK G-Power Series offers the performance and durability of platinum at a competitive price. The 43LTS are extremely hard to find but I was able to find them. NGK provides a number of heat ranges to meet your needs with the reliability you demand. GM actually puts NGK Iridiums in newer trucks. They said the pistons would bang. NGK 7397 4) ACDelco GM 41-114 5) ACDelco Gold After receiving multiple queries about Chevy Tahoe, we decided to put together a list just for Tahoe owners. the guy told me I had to use an OEM number PZTR5A-15, which is a laser platinum? BUt, I just talked to NGK's customer service dept Platinum tip spark plug maintenance Information. They are probably From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. Check out our AI-powered list of the Best Spark Plugs For Chevy 5.7 Vortec. Supposedly the TR5 is pre-gapped at .035 and the NGK.com specializes in hard to find NGK products. To contact them, click here. See your GM dealer for information on whether your vehicle may benefit from the information. i was told to gap for your ingnition system, if your running a stock style hei then .035 i would assume. Are people using the NGK tr55s and they're working OK? dukbludvl, August 5, 2004 in 1999-2013 Silverado & Sierra 1500. Step up to the $1.99 Not terribly different from your crate engine. Somebody is a retard. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. 1987 monte carlo ss 383ci, 9.7:1, xe274 cam, vortec heads, 200r4, 3.73 posi. Nice smoke on that one. The threaded area, although not sealed, serves as a protective environment against most harmful elements. Some suggestions: AC/Delco R42LTS - Stock and a good place to start. BUt, I just talked to NGK's customer service dept. I'm runnin em with no probs either. I use Autolite 605 spark plugs in it. I have been using the Bosch Platnium's +2. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. work in progress--for the next 10 years. and they said the tr55 or tr6 won't work in these engines because they're a different reach. © Copyright General Motors Corporation. :rant: Save Share NGK Spark Plugs TR55 - NGK V-Power Spark Plugs Spark Plug, V-Power, Tapered Seat, 14mm Thread, .691 in. The vast majority of LS1 owners run TR55's.

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