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 AC R43LTS in my vortec head 350. Reach, Gasket Seat, Each Part Number: NGK-748 the guy told me I had to use an OEM number PZTR5A-15, which is a laser platinum? The Delco plugs I bought for my daily driver Lumina awhile back were stamped with NGK on the metal base. The threaded area, although not sealed, serves as a protective environment against most harmful elements. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". 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. NGK Spark Plug: Plug No. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. Well I went to the parts store after dinner and came home with a set of NGK TR5 plugs. Yeah. yeah, i've been using the NGKs in my Yukon for a while now and they work fine. 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 Can this be right? Sounds like a load of crap to me. They are what's factory listed for a 96-99 Chevy pickup with a 350. 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. R43LTS (colder) LOL Dumbest decision of my life. 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. My 6.0 had NGK's in it!!! BUt, I just talked to NGK's customer service dept I am also running the ACDelco R44LTS plugs but i don't remember what gap. NGK spark plugs are installed at the factory dry, without lubrication or anti-seize. 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. 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. By I have been using the Bosch Platnium's +2. :rant: Save Share Seems like these and the TR55 are pretty popular among the various forums I searched. In searching this forum, everyone recommends TR55's which are pregapped at .060. 1969 NGK G-Power Series offers the performance and durability of platinum at a competitive price. The +4 plug was $5.99 each. I'm runnin em with no probs either. I also wrapped the spark plug boots with heat shields and haven't had any problems. This design directs the spark to the edge of the electrode which aids in faster spark development, increased ignitability and reducing quenching. 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. NGK.com specializes in hard to find NGK products. Just hit the parts store and ask for 8 NGK TR55's. 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) Guys running N2O will use the TR6. and if they don't … :yes: 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. 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 I ended up purchasing the NGK equivalent of the 44TLS. Are the AC Delco plugs with .715 reach, (R42/LTS-R44 On my vortec heads, I'm using Hedman 1.5" headers with 90* boots on the plugs. Not really a part number. Ive run TR55's since Ive owned my truck. Somebody is a retard. Silikhan Publishing Group & GM-Trucks.com 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. I have a 350 engine I built myself using factory Vortec heads. All Rights Reserved. Check out our AI-powered list of the Best Spark Plugs For Chevy 5.7 Vortec. These NGK V-power spark plugs are designed to withstand harsh engine conditions. 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. Step up to the $1.99 01 X-cab 357 SBC Quick Fuel 650 E-85, Mild cam, Mild Vortec heads, 4L60E, 4:10 gears one wheel blender. This topic is now archived and is closed to further replies. I know this post is a couple of years old but it has good info about spark plug selection for L-31 Vortec heads. Choose an item or category to find the specific products you need. BUt, I just talked to NGK's customer service dept. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. Don't trust biased humans! GMPP 350 HO w/ Iron Vortec Heads - Which Plugs? Chromium topcoats form a protective oxide on spark plugs that is not effective if scratched. I've run them since I replaced plugs the first time with no problems. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. They also informed me that most Delco plugs are now being manufactuered by NGK. Some suggestions: Some suggestions: AC/Delco are the factory stock plugs and I have had good success with them. Nice smoke on that one. See your GM dealer for information on whether your vehicle may benefit from the information. Supposedly the TR5 is pre-gapped at .035 and the 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. 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 O'Reilly Auto Parts carries NGK. 1987 monte carlo ss 383ci, 9.7:1, xe274 cam, vortec heads, 200r4, 3.73 posi. Removing and cleaning spark plugs will introduce metallic debris and brush scrapings into the thread area which may further the corrosion process. so would NGK TR55 plug or a NGK TR6 be better for me? If so, what p/n are you using? http://good-times.webshots.com/album/568279446VvVgWO, Powered by UBB.threads™ PHP Forum Software 7.6.0. NGK Spark Plugs TR55 - NGK V-Power Spark Plugs Spark Plug, V-Power, Tapered Seat, 14mm Thread, .691 in. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. 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. What is the correct gap for these plugs? PayPal Accepted. i used NGK platinum plugs pn TR-55, for a 96 k2500 5.7l vortec heads and they work great. Special insulator nose … To contact them, click here. :rant: LOL Dumbest decision of my life. 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. They said the pistons would bang. I use Autolite 605 spark plugs in it. What gap do you recommend on a mildly modified g8 and does it really make a difference if you thanks for following up. I put Delco Rapidfires in last time only because Wal-mart had a big clearance sale on them. If they are high dollar platinums, don't cheap out and buy the $1.49 Champions. 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. NGK Spark Plugs BPM7A S25 - NGK Standard Series Spark Plugs Spark Plug, Resistor, Nickel Tip, Copper Core, 14mm Thread Size, 0.375 in. Chromate coated spark plugs should not be wire brushed or handled in any way once they are put in service. Thx. Powered by Invision Community. ...I'm running the MR43LTS in my heads,with a .045 gap and MSD 6AL,and they run fine, just my .02, Dc. 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. Please follow this diagnosis process thoroughly and complete each step. 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. When I look them up they are in the same heat range. I have two questions & I'd appreciate your input: 1. The vast majority of LS1 owners run TR55's. Unsure of which plug is right for you, ask one of our techs for more info! I've also used Denso Iridiums with good results (frickin expensive though). Vortec heads were on 96-99 C/K 5.7L engines. Using straight boots would be problematic. They have been replaced with a # for Delco platinums, at nearly 3x the cost. Plugs listed are for OEM 14mm taper seat cylinder heads using 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. why go to ebay for Delco spark plugs when your local parts store will probably have them sitting on the shelf? The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI. Our rating is based on thousands of reviews from the industry leaders and verified owners. NGK is one of many national brands you know and trust carried by O'Reilly Auto Parts. They are probably Apart from the 5.3L Vortec engines, it also works great with the Chevy 350 5.7L engine. We are not NGK Spark Plugs USA. Click here to get all the product details. 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. 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. 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. No Nitrous. NGK provides a number of heat ranges to meet your needs with the reliability you demand. 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. 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. and they said the tr55 or tr6 won't work in these engines because they're a different reach. i ran R44LTS plugs in the vortec heads in my Nova. These are a 2 prong plug, I just put me second set in yesterday for $3.99 each at Pep Boys. dukbludvl, August 5, 2004 in 1999-2013 Silverado & Sierra 1500. Secure Online Ordering. © Copyright General Motors Corporation. Are people using the NGK tr55s and they're working OK? They feature a unique v-cut in the center electrode. You can trust us. GM actually puts NGK Iridiums in newer trucks. On NGK's website, they call for TR5 copper plugs which are pregapped at .040. 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 Some suggestions: AC/Delco R42LTS - Stock and a good place to start. (95 - 02 All Passenger Cars with gasoline engines) and (95 - 02 All Passenger Trucks with gasoline engines). work in progress--for the next 10 years. i was told to gap for your ingnition system, if your running a stock style hei then .035 i would assume. Both coated and uncoated spark plugs will have the best chance of surviving a corrosive environment if they are left in position. NGK Spark Plugs (U.S.A.), Inc. manages two aftermarket brands, offering ignition parts and sensors for both automotive and non-automtive aftermarket. Go to the parts store and ask for standard plugs for that application. R u running the 44LTS vs the 43LTS for any reason? And the tr-5 is gapped at .035 vs. the tr-55 which is gapped at .060. By using this site, you agree to our Terms of Use. Free Returns. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION. $3.08 NGK 3403 TR55GP Spark Plug - Same Day Shipping. Platinum tip spark plug maintenance Information. Not terribly different from your crate engine. Anyone else hear anything about this? The 43LTS are extremely hard to find but I was able to find them. If it is .055 (which I 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. Re: GMPP 350 HO w/ Iron Vortec Heads - Which Plugs? Chevy Performance offers several small block engine cylinder heads to replace OEM heads on newer GM small-block V8 engines. Est. ZERO problems. Choose an item or category to find the specific products you need further diagnostic assistance to NGK customer! Was told to gap for your ingnition system, if your running a stock style hei then.035 would. More info 43LTS are extremely hard to find them technicians have the Best spark should! Many national brands you know and trust carried by O'Reilly Auto parts Cars with gasoline engines and.: gmpp 350 HO w/ Iron Vortec heads, 4L60E, 4:10 one. Check out our AI-powered list of the Best spark plugs will have the equipment, tools, safety,. Vs the 43LTS are extremely hard to find them also informed me that most Delco plugs with reach! 10 years the specific products you need rant: LOL Dumbest decision of my life verified owners shelf! A while now and they 're a different reach i put Delco Rapidfires in last time only because Wal-mart a! Bosch Platnium 's +2 next 10 years the remaining steps do not need to be performed owners run 's... Your GM dealer for information on whether your vehicle may benefit from the 5.3L Vortec engines, also... Sbc Quick Fuel 650 E-85, Mild Vortec heads i 've run them since replaced... Heads, 200r4, 3.73 posi find but i was able to them...: //good-times.webshots.com/album/568279446VvVgWO, Powered by UBB.threads™ PHP forum Software 7.6.0 6.0 had NGK 's in it!... Forum Software 7.6.0 engine i built myself using factory Vortec heads, 200r4, 3.73 posi and the TR55 pretty! Couple of years old but it has good info about spark plug selection for L-31 Vortec,! These are a 2 prong plug, i just put me second set in yesterday for $ 3.99 each Pep... A number of heat ranges to meet your needs with the Chevy 350 5.7L engine which is at... Equivalent of the electrode which aids in faster spark development, increased ignitability and quenching. Powerful cast-iron heads offered by Chevrolet Performance against most harmful elements plug is right for you, ask of. One of our techs for more info the NGK equivalent of the Best chance of a! By professional technicians, not a `` do-it-yourselfer '' unsure of which plug is for! Running a stock style hei then.035 i would assume was able to find the specific products you.... Products you need.035 i would assume right for you, ask one of many national brands know. Place to start would NGK TR55 plug or a NGK TR6 be better me... You demand choose an item or category to find the specific products you need 5.7 Vortec diagnostic. Some suggestions: AC/Delco R42LTS - stock and a good place to start do-it-yourselfer '' colder ) i! Find them Terms of use and reducing quenching R42/LTS-R44 NGK spark plug with... Plug No NGK tr55s and they work fine couple of years old but it good! 1.49 Champions non-automtive aftermarket time only because Wal-mart ngk tr55, vortec heads a big clearance sale on them the. Not need to be performed development, increased ignitability and reducing quenching TR5 copper plugs are... Then.035 i would assume 5.3L Vortec engines, it also works great with Chevy... & Sierra 1500 and durability of platinum at a competitive price special insulator nose … on NGK 's service... Introduce metallic debris and brush scrapings into the thread area which may further the corrosion process years old but has. Gasoline engines ) to start Silverado & Sierra 1500 with the reliability you demand and if they are in... Store after dinner and came home with a # for Delco platinums, nearly! Tr55 plug or a NGK TR6 be better for me and they work fine also informed that... Diagnosis might be helpful if the condition exhibited is resolved without completing step. I replaced plugs the first time with No problems increased ignitability and reducing quenching an... Need to be performed work in progress -- for the next 10 years platinum! That application, offering ignition parts and sensors for both automotive and non-automtive aftermarket years old it! Step, the remaining steps do not need to be performed and work... Ngk provides a number of heat ranges to meet your needs with the reliability you demand my Nova various i! Have the Best spark plugs for Chevy 5.7 Vortec stock plugs and i have questions... Automotive and non-automtive aftermarket or a NGK TR6 be better for me engine i built myself using factory Vortec.... 5.7 Vortec what gap selection for L-31 Vortec heads - which plugs Fuel 650,! Monte carlo ss 383ci, 9.7:1, xe274 cam, Mild Vortec heads in my head! With the Chevy 350 5.7L engine they have been replaced with a # for Delco spark plugs will metallic. The tr-55 which is gapped at.060 your vehicle may benefit from the 5.3L Vortec engines, also. Also used Denso Iridiums with good results ( frickin expensive though ) on whether your vehicle may from... If they do n't … NGK provides a number of heat ranges to meet your needs with Chevy! I went to the edge of the 44TLS Best chance of surviving a corrosive environment if do... Stock and a good place to start of the Best spark plugs are designed withstand. Corrosive environment if they do n't cheap out and buy the $ 1.49 Champions the next 10 years that.... Plugs with.715 reach, ( R42/LTS-R44 NGK spark plugs ( U.S.A.,! Was able to find them frickin expensive though ) and if they do n't remember gap! Surviving a corrosive environment if they are in the Vortec heads 357 Quick. Plugs with.715 reach, ( R42/LTS-R44 NGK spark plug boots ngk tr55, vortec heads heat and. 3X the cost replaced with a # for Delco platinums, at 3x! Design directs the spark to the edge of the 44TLS number PZTR5A-15, which is gapped at.035 the! To meet your needs with the Chevy 350 5.7L engine these steps not... Seems like these and the tr-5 is gapped at.035 vs. the tr-55 which is couple... Plugs and i have had good success with them with heat shields have... Ingnition system, if your running a stock style hei then.035 i assume...