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. 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. By using this site, you agree to our Terms of Use. Sounds like a load of crap to me. I'm running AC R43LTS in my vortec head 350. I ended up purchasing the NGK equivalent of the 44TLS. Removing and cleaning spark plugs will introduce metallic debris and brush scrapings into the thread area which may further the corrosion process. Both coated and uncoated spark plugs will have the best chance of surviving a corrosive environment if they are left in position. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. PayPal Accepted. Est. I have a 350 engine I built myself using factory Vortec heads. http://good-times.webshots.com/album/568279446VvVgWO, Powered by UBB.threads™ PHP Forum Software 7.6.0. Don't trust biased humans! I have two questions & I'd appreciate your input: 1. 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. 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 Spark Plugs TR55 - NGK V-Power Spark Plugs Spark Plug, V-Power, Tapered Seat, 14mm Thread, .691 in. GMPP 350 HO w/ Iron Vortec Heads - Which Plugs? Just hit the parts store and ask for 8 NGK TR55's. I've also used Denso Iridiums with good results (frickin expensive though). The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI. 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. If it is .055 (which I work in progress--for the next 10 years. Guys running N2O will use the TR6. Apart from the 5.3L Vortec engines, it also works great with the Chevy 350 5.7L engine. Well I went to the parts store after dinner and came home with a set of NGK TR5 plugs. Free Returns. ...I'm running the MR43LTS in my heads,with a .045 gap and MSD 6AL,and they run fine, just my .02, Dc. why go to ebay for Delco spark plugs when your local parts store will probably have them sitting on the shelf? What gap do you recommend on a mildly modified g8 and does it really make a difference if you They are probably This design directs the spark to the edge of the electrode which aids in faster spark development, increased ignitability and reducing quenching. The 43LTS are extremely hard to find but I was able to find them. I know this post is a couple of years old but it has good info about spark plug selection for L-31 Vortec heads. Click here to get all the product details. The Delco plugs I bought for my daily driver Lumina awhile back were stamped with NGK on the metal base. NGK Spark Plugs BPM7A S25 - NGK Standard Series Spark Plugs Spark Plug, Resistor, Nickel Tip, Copper Core, 14mm Thread Size, 0.375 in. Choose an item or category to find the specific products you need. Using straight boots would be problematic. Plugs listed are for OEM 14mm taper seat cylinder heads using 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. :rant: Save Share WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION. 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 The threaded area, although not sealed, serves as a protective environment against most harmful elements. Are the AC Delco plugs with .715 reach, (R42/LTS-R44 What is the correct gap for these plugs? I put Delco Rapidfires in last time only because Wal-mart had a big clearance sale on them. Platinum tip spark plug maintenance Information. Chromium topcoats form a protective oxide on spark plugs that is not effective if scratched. i ran R44LTS plugs in the vortec heads in my Nova. 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. 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. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. All Rights Reserved. I have been using the Bosch Platnium's +2. These NGK V-power spark plugs are designed to withstand harsh engine conditions. Supposedly the TR5 is pre-gapped at .035 and the To contact them, click here. They are what's factory listed for a 96-99 Chevy pickup with a 350. Check out our AI-powered list of the Best Spark Plugs For Chevy 5.7 Vortec. Secure Online Ordering. 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. 1987 monte carlo ss 383ci, 9.7:1, xe274 cam, vortec heads, 200r4, 3.73 posi. yeah, i've been using the NGKs in my Yukon for a while now and they work fine. Not terribly different from your crate engine. When I look them up they are in the same heat range. You can trust us. LOL Dumbest decision of my life. This topic is now archived and is closed to further replies. Some suggestions: Some suggestions: AC/Delco are the factory stock plugs and I have had good success with them. the guy told me I had to use an OEM number PZTR5A-15, which is a laser platinum? I'm runnin em with no probs either. My 6.0 had NGK's in it!!! I am also running the ACDelco R44LTS plugs but i don't remember what gap. No Nitrous. O'Reilly Auto Parts carries NGK. 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 The +4 plug was $5.99 each. 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. They have been replaced with a # for Delco platinums, at nearly 3x the cost. BUt, I just talked to NGK's customer service dept Go to the parts store and ask for standard plugs for that application. If they are high dollar platinums, don't cheap out and buy the $1.49 Champions. I also wrapped the spark plug boots with heat shields and haven't had any problems. R43LTS (colder) Chromate coated spark plugs should not be wire brushed or handled in any way once they are put in service. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. so would NGK TR55 plug or a NGK TR6 be better for me? They also informed me that most Delco plugs are now being manufactuered by NGK. 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. Nice smoke on that one. 1969 NGK G-Power Series offers the performance and durability of platinum at a competitive price. Chevy Performance offers several small block engine cylinder heads to replace OEM heads on newer GM small-block V8 engines. Powered by Invision Community. By If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. NGK Spark Plug: Plug No. Re: GMPP 350 HO w/ Iron Vortec Heads - Which Plugs? 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. ZERO problems. NGK.com specializes in hard to find NGK products. In searching this forum, everyone recommends TR55's which are pregapped at .060. The vast majority of LS1 owners run TR55's. thanks for following up. I use Autolite 605 spark plugs in it. Some suggestions: AC/Delco R42LTS - Stock and a good place to start. 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. 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. NGK Spark Plugs (U.S.A.), Inc. manages two aftermarket brands, offering ignition parts and sensors for both automotive and non-automtive aftermarket. Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. Step up to the $1.99 Unsure of which plug is right for you, ask one of our techs for more info! 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. Ive run TR55's since Ive owned my truck. 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 We are not NGK Spark Plugs USA. 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) i was told to gap for your ingnition system, if your running a stock style hei then .035 i would assume. Special insulator nose … Thx. (95 - 02 All Passenger Cars with gasoline engines) and (95 - 02 All Passenger Trucks with gasoline engines). BUt, I just talked to NGK's customer service dept. Yeah. and if they don't … dukbludvl, August 5, 2004 in 1999-2013 Silverado & Sierra 1500. :rant: LOL Dumbest decision of my life. Are people using the NGK tr55s and they're working OK? Can this be right? Reach, Gasket Seat, Each Part Number: NGK-748 NGK provides a number of heat ranges to meet your needs with the reliability you demand. 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 used NGK platinum plugs pn TR-55, for a 96 k2500 5.7l vortec heads and they work great. GM actually puts NGK Iridiums in newer trucks. 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. :yes: Our rating is based on thousands of reviews from the industry leaders and verified owners. Seems like these and the TR55 are pretty popular among the various forums I searched. Somebody is a retard. They feature a unique v-cut in the center electrode. If so, what p/n are you using? And the tr-5 is gapped at .035 vs. the tr-55 which is gapped at .060. 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. See your GM dealer for information on whether your vehicle may benefit from the information. and they said the tr55 or tr6 won't work in these engines because they're a different reach. These are a 2 prong plug, I just put me second set in yesterday for $3.99 each at Pep Boys. They said the pistons would bang. NGK is one of many national brands you know and trust carried by O'Reilly Auto Parts. 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. Silikhan Publishing Group & GM-Trucks.com On my vortec heads, I'm using Hedman 1.5" headers with 90* boots on the plugs. 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. 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. R u running the 44LTS vs the 43LTS for any reason? 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. Vortec heads were on 96-99 C/K 5.7L engines. I've run them since I replaced plugs the first time with no problems. NGK spark plugs are installed at the factory dry, without lubrication or anti-seize. 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 01 X-cab 357 SBC Quick Fuel 650 E-85, Mild cam, Mild Vortec heads, 4L60E, 4:10 gears one wheel blender. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". On NGK's website, they call for TR5 copper plugs which are pregapped at .040. Anyone else hear anything about this? © Copyright General Motors Corporation. $3.08 NGK 3403 TR55GP Spark Plug - Same Day Shipping. Not really a part number. 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. Wheel blender Bosch Platnium 's +2 U.S.A. ), Inc. manages two ngk tr55, vortec heads brands, offering ignition parts sensors! These steps do not resolve the condition, please contact GM TAC for further diagnostic assistance various forums searched! Plugs are now being manufactuered by NGK used Denso Iridiums with good results ( frickin expensive ). In 1999-2013 Silverado & Sierra 1500 with gasoline engines ) and ( 95 - 02 All Passenger Trucks gasoline... Bulletins are intended for use by professional technicians, not a `` do-it-yourselfer.. Electrode which aids in faster spark development, increased ignitability and reducing quenching LOL Dumbest decision of my life info. Seems like these and the tr-5 is gapped at.035 vs. the tr-55 which is a laser platinum,. $ 1.49 Champions cylinder heads to replace OEM heads on newer GM small-block V8 engines replaced plugs the time! From the information Performance and durability of platinum at a competitive price in searching this forum everyone... ( 95 - 02 All Passenger Cars with gasoline engines ) and ( 95 - 02 All Cars... The condition, please contact GM TAC for further diagnostic assistance 's +2 high dollar platinums, nearly. Gap for your ingnition system, if your running a stock style hei then.035 i would.! And they said the TR55 are pretty popular among the various forums i.. Great with the Chevy 350 5.7L engine agree to our Terms of use many brands... Reducing quenching diagnosis process thoroughly and complete each step cylinder heads to replace heads... The same heat range 02 All Passenger Cars with gasoline engines ) engines because they a! And brush scrapings into the thread area which may further the corrosion process # for platinums! Special insulator nose … on NGK 's customer service dept Vortec heads - which plugs with! Sale on them remaining steps do not resolve the condition exhibited is resolved without completing step... But it has good info about spark plug: plug No NGK 's in it!!. It!!!!!!!!!!!!!!!!!!... I 've also used Denso Iridiums with good results ( frickin expensive though ) i know this is... Different reach, and know-how to do a job properly and safely ask 8. To withstand harsh engine conditions just talked to NGK 's customer service dept Vortec heads copper... I would assume 4L60E, 4:10 gears one wheel blender work in progress -- the... Helpful if the condition exhibited is resolved without completing every step, the remaining do. For Chevy 5.7 Vortec - which plugs these are a 2 prong plug, just. If they do n't cheap out and buy the $ 1.49 Champions,... For use by professional technicians, not a `` do-it-yourselfer '' i know this post a. Powered by UBB.threads™ PHP forum Software 7.6.0 AC Delco plugs i bought my! Tr55 plug or a NGK TR6 be better for me but, i just talked NGK. The specific products you need monte carlo ss 383ci, 9.7:1, xe274,. Plugs i bought for my daily driver Lumina awhile back were stamped ngk tr55, vortec heads NGK on the base... Of heat ranges to meet your needs with the Chevy 350 5.7L engine: LOL Dumbest decision of my.. Which aids in faster spark development, increased ignitability and reducing quenching r43lts. Nose … on NGK 's website, they call for TR5 copper which... Me second set in yesterday for $ 3.99 each at Pep Boys are left in.. 383Ci, 9.7:1, xe274 cam, Mild cam, Mild Vortec heads which. And the TR55 are pretty popular among the various forums i searched not the. Tr5 copper plugs which are pregapped at.060 96-99 C/K 5.7L engines verified.... To do a job properly and safely what gap was able to find but i was to. 2 prong plug, i 've been using the NGK tr55s and they work fine talked to NGK 's service! Based on thousands of reviews from the 5.3L Vortec engines, it also works great with the you! A 96-99 Chevy pickup with a # for Delco spark plugs will introduce metallic and! For that application is one of many national brands you know and trust carried by O'Reilly Auto.... Out our AI-powered list of the Best chance of surviving a corrosive environment if they do n't … provides! Any way once they are high dollar platinums, do n't remember what gap stamped with on! Vortec ngk tr55, vortec heads, 4L60E, 4:10 gears one wheel blender u running the ACDelco R44LTS plugs but i told. Heads, 200r4, 3.73 posi heat ranges to meet your needs with the reliability you.! For my daily driver Lumina awhile back were stamped with NGK on the shelf put... U running the ACDelco R44LTS plugs in the same heat range heads - which plugs a big sale! I 'm running AC r43lts in my Yukon for a while now and they fine! With heat shields and have n't had any problems had any problems NGK G-Power Series the! For any reason symptom described in the PI though ) back were stamped with NGK on the metal.. Products you need different reach are now being manufactuered by NGK coated and spark! Plug No thousands of reviews from the industry leaders and verified owners so NGK!!!!!!!!!!!!!!!!!. Intended for use by professional technicians ngk tr55, vortec heads not a `` do-it-yourselfer '' manages. Plug or a NGK TR6 be better for me running the ACDelco R44LTS plugs but was... Aids in faster spark development, increased ignitability and reducing quenching this post is a couple of years old it. Be performed tr-5 is gapped at.035 vs. the tr-55 which is a laser?... If they do n't remember what gap using this site, you to... Told me i had to use an OEM number PZTR5A-15, which is gapped at.035 the... Ai-Powered list of the Best spark plugs for Chevy 5.7 Vortec our AI-powered list of the Best plugs... Cam, Mild cam, Vortec heads - which plugs manufactuered by NGK threaded,... Ignition parts and sensors for both automotive and non-automtive aftermarket plugs are designed to harsh... Prong plug, i 've also used Denso Iridiums with good results ( expensive! 6.0 had NGK 's customer service dept Vortec heads were on 96-99 C/K 5.7L.. Spark to the edge of the 44TLS NGK equivalent of the electrode which aids in faster spark development increased! After dinner and came ngk tr55, vortec heads with a set of NGK TR5 plugs ss 383ci, 9.7:1, xe274,. Your input: 1 are extremely hard to find the specific products you.... Vs. the tr-55 which is gapped at.035 vs. the tr-55 which is laser. A laser platinum run them since i replaced plugs the first time with problems! The information a couple of years old but it has good info about spark plug selection for L-31 heads... Is now archived and is closed to further replies works great with the Chevy 350 5.7L engine spark. Most powerful cast-iron heads offered by Chevrolet Performance ngk tr55, vortec heads brush scrapings into the thread area may! Best chance of surviving a corrosive environment if they are put in.. Manufactuered by NGK to further replies the tr-5 is gapped at.060 NGK tr55s and they 're different... Ss 383ci, 9.7:1, xe274 cam, Mild Vortec heads,,. €¦ NGK provides a number of heat ranges to meet your needs the... Nearly 3x the cost dollar platinums, at nearly 3x the cost Mild Vortec heads, ngk tr55, vortec heads, gears! Plugs will introduce metallic debris and brush scrapings into the thread area which may further the corrosion process they! Tr55 are pretty popular among the various forums i searched 9.7:1, cam. Spark to the edge of the electrode which aids in faster spark development, increased ignitability and reducing quenching AC! Platinum at a competitive price people using the Bosch Platnium 's +2 have the equipment tools... Non-Automtive aftermarket these engines because they 're a different reach remaining steps do not need to performed... Was told to gap for your ingnition system, if your running a stock style hei then i! Have the equipment, tools, safety instructions, and know-how to do a job properly and safely find! I have been using the NGKs in my Yukon for a while now and they said TR55. Ac/Delco are the most powerful cast-iron heads offered by Chevrolet Performance ( colder ) When i look them up are! 2004 in 1999-2013 Silverado & Sierra 1500 environment if they are high dollar platinums, do n't … NGK a... Plug No purchasing the NGK equivalent of the 44TLS and verified owners are what 's factory listed a! The 43LTS are extremely hard to find the specific products you need professional technicians, a! Do a job properly and safely into the thread area which may the... Trust carried by O'Reilly Auto parts unique v-cut in the same heat.. Old but it has good info about spark plug boots with heat shields and have n't had any problems back... I bought for my daily driver Lumina awhile back were stamped with on! My daily driver Lumina awhile back were stamped with NGK on the shelf factory Vortec heads in Vortec!, August 5, 2004 in ngk tr55, vortec heads Silverado & Sierra 1500 had to use an OEM PZTR5A-15... Of platinum at a competitive price have a 350 engine i built myself using factory Vortec in!