Your email address will not be published. I ran tr6 copper's on my cammed ls1 with great success. #2 Runner-Up: NGK Iridium IX. Save my name, email, and website in this browser for the next time I comment. The gap will perfectly fit the space where the spark plug will be kept. Best spark plugs to use on cammed camaro. Without the spark plug, you will be in trouble to tackle all these things. It is important to go through the customer reviews before making a purchase to know which manufacturer makes the best quality plugs for your LS1 engine. TR55-IX is the Iridium plug. So, you definitely have to check the resistance ability. How did we come up with the list, you ask? Experienced techs and vendors please step in! Here, we will be showing you the best sparks plugs for LS1 which will help you to choose your desired one. Anyone ever tried E3 plugs? I ran TR55s in my cammed/full bolt-ons Silverado for 20k+ miles and Tr6s for 20k+ miles back when I was running a 150 shot of nitrous. We understand the stress associated with the buying process! In general, its best to avoid cheap products, as they will tend to wear out faster than higher-end models. Sometimes, the buildup of the engine of your car requires a colder spark plug, sometimes it requires a hotter spark plug. You can always rely on Bosch in terms of quality. We ran two pulls after the new plugs and retune and that extra 9hp stayed consistant. NGK TR's are the most popular plug for LS engines. Stock plug gap is .060 to .065 with OEM plugs. Dyno'd last Tuesday at 420/400 through a 4000 stalled th400 at 4.10 gears. If you start to lose power go back. If you are on a budget, this just might be the best spark plug for LS1 engines. We are very satisfied with the service that is provided. This spark plug can last up to 100,000 miles before replacement is required. How many miles on it? Running the TR6 on my Cobra, they have been great. And gladly the core material of this spark plug is cooper. So, you will not need to go to the mechanics so often. Look for spark plugs that will help your LS1 engine get the best miles to gallon. We employed both Artificial Intelligence and large data volume to validate all collected information. Some users have reported that it can be difficult to install and that it does not always perform well in cold weather conditions. ------------------------------------------------. Texas Speed TSP 228R 228/228 .600"/.600" Camshaft, Spring Kit, Chromoly JDMSPEED New Heat Spark Plug Ignition Wires Set 10.5mm Replacement for LSx LS1 NGK # 3186 G-Power Platinum Spark Plugs TR5GP - 8 PCSNEW, PLATINUM SPARK SPLUG SET (8) FOR LS1 LS2 LS3 LS6 L99 ENGINES, HINSON Red LSx Car Performance V8 Spark Plug Wire Set LS1 LS2 LS3 LS6 LS7 LSA. Spark plug for ls1 will help the engine to get additional competency which is needed for the engine to run to the fullest extent and to increase the longevity. Both are just full exhaust and tune cars basically. This plug features a triple gasket seal that gets rid of any combustion gas leakage. The nickel-plated shell has anti-seize and corrosion protection making this a reliable spark plug with durability. Spark plugs ignite your engine. The 228R camshaft is large enough that we recommend a larger than stock stall converter in automatic cars. So, check out the list and choose the one is a good fit for you. NGK 3951 Pack of 8 Spark Plugs (TR55) $22.02: Buy on Amazon: 9: Comp Cams 13702 Trunnion Upgrade Kit for GM LS1/LS2/LS3/LS6 Rocker Arms. Fram Autolite XP5325-4PK Iridium XP Spark Plug is a top pick for those looking for an optimal-performing spark plug. When choosing a new Spark Plug For Cammed Ls1, there are many things to consider. TR6 here too which came with my supercharger. I heard that the head bolts are the same size on one of the years. If you are someone who is planning to replace the spark plugs for the LS1 engine or looking for an upgrade, this buying guide will help you make a choice. Gap spark plugs without tool. They aren't too expensive. CarBole 8 Pack D585 Ignition Coil Pack and 748UU 8mm Spark Plug Wires Fit For Chevy Silverado LS1 LS3 4.8 5.3L Chevrolet GMC CADILLAC 4.8L 5.3 5.7 6.0, Red. Youve been bombarded with information, so you need to find a reputable source with credible options before you make any decisions on which product would be best for your needs? These spark plugs can also handle extreme stress, making them very durable. I still decided to get the TR55. According to me, Iridium Spark Plugs for 5.3L Engine is good. And oh, its My first car. It will also provide longer service life in high-RPM applications. If you consider all of these factors, you will be able to make the best decision about buying the best spark plugs for LS1 engines. Denso (32019) SK20R11 Iridium Spark Plugs are one of the best iridium plugs available today. do you know the part number on the NGK plugs that work best i think i want to go with NGK i have used them in the paset and have had good results. Dyno testing has shown the 228R camshaft to make a solid 45-50rwhp gains. If you are on a budget, this just might be the best spark plug for LS1 engines. E3 Spark Plug E3.48 Automotive Spark Plug. The lower LSA also creates a slightly rougher idle. Could anyone elaborate on this? Here are some of the things that you need to keep an eye on: The quality and design of a spark plug determine how long it can maintain optimum combustion. Your email address will not be published. A spark plugs for LS1 with Cooper, platinum, Iridium is perfect and will work best for your engine. it starts up and idles fine but it's definitely lean when driving. This improves the plugs ability to resist erosion and corrosive combustion. But if you face any issues while loosening up the spark plug, then you can use a pipe to do the work. JavaScript is disabled. But you have to set the spark plug perfectly otherwise the gap will not fit that space. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Which spark plugs are best for performance tuning? The MSD MSC coils are a direct replacement for your stock coils, and feature multi-spark capability when used with the 6LS. How do you do that. These are all products that have proven results for their customers. In lower gears (1, 2, 3) I had to get rpm's down near 1k or under to get any bucking out of it. Let us look through the best five spark plugs in the market. 1. Overall, go with the spark plug that you know is going to last. This spark plug will provide the gas-tight seal and make sure that the engine of your car can easily overcome the other interferences and the compression pressure. There are many different styles, colors, and materials used in Spark Plug For Cammed Ls1 manufacturing, so think about what you like and dont like, and choose a style that matches your personal preferences. http://i43.photobucket.com/albums/e364/silvergto/GTOBurnoutforsigValdosta.jpg. Take a look - No Product Score Action; 1 (6-Pack) NGK Spark Plugs TR55 (Stock # 3951) 9.8: Check Price: 2: At the moment I'm using the NGK TR6's, installed by my builder. Then our AI ranked them on their quality-to-price ratio using industry-standard criteria that let us pick the best Spark Plug For Cammed Ls1 currently on the market! The cost of is a major factor to consider when buying a new product. These are five of the best spark plugs that are available on the market today and they each have their own unique benefits. Stock sparkplug with a 0.50 gap will get blown out under boost and is too hot of a plug NGK TR6 is one step colder and gap of 0.35 So, itd be wise for you to check the design first before buying the spark plugs. Ask this question on any other board and you'll get people recommending them. This multicolored spark plug not only provides great performance but also provides extra accessories, underwood parts, and performance parts. Most people here are running NGK TR55. Pull them out after a few thousand and see what they look like. ACDelco 45GMTR6A Platinum Spark Plug is designed for longer performance and durability, to provide the ultimate performance and protection from extreme temperature and harmful engine combustion by-products that can clog the gap in traditional plugs. And check the things that we have mentioned before and choose accordingly and then you can have the best spark plugs for the stock LS1. It will help the spark plug wire to loosen its inside buildup. My ride is an 05 6-speed. I thought the manual called for .044 or something. We previously used the spark plug from HiVehicle, but if we have to recommend for you between these two, we would surely recommend this spark plug for LS1 from ACDelco. The 228R camshaft is a very popular camshaft for customers wanting a very streetable camshaft that makes approximately 5-7 more horsepower than the 224R camshaft. Consult owners manual for proper part number identification and proper installation. He is always up-to-date on the latest industry trends and is constantly expanding his knowledge to bring our readers the most informative and accurate content possible. The plug is also built to ISO and SAE standards for proven performance. FAST 54039B LSX Black 92mm Intake Manifold. . They hold a good spark, and I pull all the way to 7K seems to be working out alot better then my TR6's. LS1-- heads, torquer v2, intake, stall, supporting mods. EASY DIY Install. Here is what you need to know on a na motor just like a NOS or Fi motor you want to run the hottest plugs you can without detonation. How to choose the correct spark plug? On the flip side, why spend $8/plug for irridium? would i run the same gap? However, some users have complained that its difficult to install. About this page. . Our Top Pick on Amazon https://tinyurlz.co/jZ3lo (Amazon Link) Below are the Tools we use to make our Videos more engaging :Best Video Editor Tool: https:. Im hoping for some constructive criticism and help getting in the right direction. It also helps protect against compression leakage. NGK Spark Plugs V-Power Spark Plugs offer economical performance for nearly any automotive application - and are the only plugs with NGK's V-Groove technology. Iridiums are really good if you can afford them. 5th Generation Chevrolet Camaro 2010 - 2015. so if i go with the AC Delco Irridiums plugs what type of wires should i go with? It is very important for the spark plug to be gapped perfectly otherwise it wont sit correctly and you will find difficulties while placing the spark plug. Remember to get some basic tools like calipers and many more which you will need to change or reset the socket and spark plug. Both my 97 SS and 02 Silverado are running TR6s gapped to .035 I believe. Its tenacious anti-seize compound resists extreme temperatures to keep your idle smooth for years of trouble-free service. Your email address will not be published. Do not twist the wire, if you do that the result will not be in your favor. Would I benefit from dropping to the TR6s? We understand how hard it is to remove the spark plug wires without the fear of breaking or destroying them. All these qualities of this spark plug made us love it instantly. First, our algorithms collected as much information available about these products from trusted sources. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The customer rating section of a Spark Plug For Cammed Ls1 review will tell you how many people have actually purchased the product and given it a rating. What plugs do you recommend for an LS1 with a 150 shot of nitrous? hope for some helpfull informatioon which spar pllugs are the best for a procharged 15psi corvette ls1? Without knowing the right factors, you will not be able to get the best performance out of your engine. Silver Intake Manifold 102mm Throttle Body Sheet Metal Fabricated EFI 15 Throttle Opening, Compatible with Chevrolet Chevy GMC Pontiac Cathedral Port LS1/LS2/LS6 Heads, Drive by Cable Throttle Body - 102mm Bore Throttle Body Openings, 3mm (1/8") Thick T6061 Sheet Aluminum Construction the Intake Will Not Bend or Flex With Boost or Vacuum. When it comes to buying the best LS1 spark plugs, checking the resistance system is a must. I got TR55's but the gap is not the same on all plugs. We have highlighted the pros and cons of each product to help you make an informed decision. I found it easiest to get it up on a lift or standstake the passenger front tire off and go through the wheelwell..unless you are REALLY SKINNY or flexible! This isnt just our opinion. I'm interested to see what others say. The only drawback is that it can be a bit pricier than other options on the market but it is definitely worth the investment. Denso (4511) PT16TT Platinum TT Spark Plug. I assume my car has stock plugs in it from the guy I bought it from. 2001 3.8 v6 camaro, T5, ford 42lb green top injectors, grand national .63 a/r turbo. Sales and Group Purchases from our Great Sponsors! If you want high-quality, durable plugs, ACDelco is always a reliable spark plug to go with. Formato had told me to get TR6's, but I could never understand why since I'm not running any FI or NOS. So, if you want to take care of the engine of your car, the spark plug for is1 is will be your best friend for that purpose. It is designed with an amazing shell that happens to be corrosion resistant. Now, replace with delcos and run around for a week, then go swap them out with the NGK's or (insert any aftermarket name here) irridum/platnium,gold, ect, and see if you "feel" a difference! This spark plug comes with a limited lifetime warranty, making it a great investment. 1 step colder for an additional 100hp. The Toyota 90919-01253 OEM spark plug is a resistor-type spark plug that features durable construction, an iridium center electrode, and 100,000-mile service life. Always look for plugs that are going to give you long-term, excellent fuel efficiency. Oh PS- buy 9 when you do..somepeople (i hear) break off the ceramic trying to get that GD #8 plug back in. I have heard mostly bad things about Bosch. The following are our top 9 picks, which have been subjected to extensive deliberation. By Stealthperf.com in forum Sales and Group Purchases from our Great Sponsors! Depends on a few different things. If you need fuel efficiency, low emissions, and faster ignition, then NGK plugs are right for you! 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) G. The LSx heads are designed to promote fast burn, so mid 30's timing (like SBC) willl actually hurt TQ (and the engine). When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Has your mind been juggling between choices when it comes to buying Spark Plug For Cammed Ls1 in general, specifically regarding which model to choose? Stock is like a step 5 plug. 1996 Vette, 388 CID LT1 (3.75" X 4.060"), Eagle Internally Balanced Forged Crank, Eagle 6" Forged Rods, SRP Forged Pistons, CompCams XFI 467 Cam (230/236 @ .050), Scorpion 1.7 RRs, AFRs ported to 212 ccs (304 cfm @.600), Match Ported LT1 Intake, SVO 30# Injectors, BBK 58mm awizeking Registered Joined Oct 6, 2007 2,819 Posts At this stage, you have to make sure that there is no gap left between the spark plugs and after that, you have to put a very tiny amount of threads on the spark plugs. Fram Autolite XP5325-4PK Iridium XP Spark Plug, 7. real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Platinum tips are used to help prevent flaws caused by gasoline that can result in corrosion and pitting. The plug manufacturer is the best resource for this info. ACDelco 41-962 Professional Platinum Spark Plug. Would the TR6's help on a NA tuned LS2 Motor? What is the best performing spark plug for the LS1? Contents. Some of the criteria are discussed below. 96 & 98 GTPs, 64 'Cuda. 486RWHP/475RWTQ.LOTS MORE. Perfecting Your Pottery: A Buying Guide for the Best Pottery Trimming Tools! Corsa CAI w/Donalson Power Filter, BBK 1 7/8 headers, MF resonator, custom exhaust with Legato mufflers, mildly ported heads, TSP VVT 3.2 cam (whole package), 3.91 1LE gears, Circle D 3200 stall torque converter, B&M power cooler tranny cooler. You must know that most popular brands have different qualities when it comes to their products. If thats the case, know that youre not alone. Silicone Boots and Sleeve, Ready for Install Straight out of the box. #8 is a real PITA! First, the TR55 plugs I removed were gapped at .055, had approximately 7k miles of use and were inspected closely and looked excellent when removed. What tools, etc is required for LT headers? These plugs have great thermal conductivity and strength. Besides you see all that room you got under that hood? We find this one a bit expensive than the others. Fram Autolite XP5325-4PK Iridium XP Spark Plug Fram Autolite XP5325-4PK Iridium XP Spark Plug is a top pick for those looking for an optimal-performing spark plug. It also has an excellent heat range that makes it perfect for high-performance vehicles or when you are looking for a spark plug for LS1 Engine. These plugs have great thermal conductivity and strength. 04 PBM M6 Mille Miglia EV-S 18s K&N FIPK Intake,SLP Loud Mouth 1, 06 brakes,LS7 Clutch, Kooks 1 3/4's,3.91's, Kaaz LSD, Harrop,BMR One Piece,GForce Axles/Stubs,Lovells Eliminator 20mm drop,NGK IX Plugs,Russel SS Lines, HP Tuners Tune. 1. NGK # 3186 G-Power Platinum Spark Plugs TR5GP. Are these ngk tr5 better than gm iridium plugs, cause the the gm plugs are like twice as much. :dunno: I was running TR55's before a header/cam swap. Sunday, I swapped out the NGK TR55 spark plugs with one heat range colder NGK TR6 plugs in a stock bottom end LS1 C5 Corvette with ported heads, cam, intake, headers, etc, which makes 430whp & 400wtq and has a 10.8:1 compression ratio. You will not get as good of gas mileage and your car will struggle to sustain maximum power. NGK V-Power Spark Plug works best for high-performance vehicles and race cars due to its optimized firing and long-life spark capabilities. If youre looking to buy an expensive item, you may want to check out the reviews for a particular brand before you make your purchase. Its also important to know who youre buying from, as there are many unethical companies out there that use unethical marketing strategies to make their products seem like theyre more expensive than they really are. ZOOMBALLS and I just had a big discussion about this exact same subject this past weekend. It is made of iridium which is considered as the superior material. Or should I stick with the TR55's, Stan you're not running crazy hp so no need to go to the TR6's. The car ran great and as good as ever. Ticking might have also been a plug with cracked porcelain, that's happened to me once. It also offers the longest life of any spark plug on the market, making it a great choice for those who want to get the most out of their vehicle. Would you think that the tighter gap is affecting my fuel economy or power? Bosch (6704) HR8LPP30U Original Equipment Fine Wire Platinum Spark Plug. However, it is more expensive compared to others so you have to be prepared to shell out a good amount of money for this. Here's what I've got going; 02 LM7 - 5.3 700R4 BTR stage 2 Truck Cam (Low Lift) Speed Engineering Shorty Headers 2.5" dual exhaust, Wide band has been ordered and on the way. The Fram Autolite XP5325-4PK is also protected with a platinum-coated ground wire, ensuring maximum efficiency in all ignition types. 25000 miles and are fine. Every time. It's a stock heads, cammed, tuned, car with 1 7/8s and other typical mods ls firebird. Dans passion for cars began at a young age, tinkering with engines in his garage with his father. The Denso Platinum Spark Plug is very cost efficient. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. If your tunning and keep making power ever time you add spark without knock keep going if your not past the point of no return (power wise) if you start getting spark retard. Provide longer service life in high-RPM applications flaws caused by gasoline that can result in corrosion and.! Complained that its difficult to install and that extra 9hp stayed consistant V-Power spark plug for the next I! Make a solid 45-50rwhp gains provide longer service life in high-RPM applications protection making this a reliable spark plug go. New plugs and retune and that extra 9hp stayed consistant install and that it be! A great investment 228R camshaft to make a solid 45-50rwhp gains we have highlighted pros. You can use a pipe to do the work to validate all information... Gladly the core material of this spark plug for the best spark plugs it! Durable plugs, checking the resistance ability MSC coils are a direct replacement for engine... Some constructive criticism and help getting in the market today and they each have their own unique benefits heard the. Economy or power performing spark plug perfectly otherwise the gap will perfectly fit the space where the spark plug without... If thats the case, know that most popular plug for cammed with. Informatioon which spar pllugs are the same on all plugs the case, know youre. Some users have complained that its difficult to install and that extra 9hp consistant... For best spark plugs for cammed ls1 Straight out of your car will struggle to sustain maximum power does not always well. This browser for the LS1 collected as much information available about these products trusted. A budget, this just might be the best LS1 spark plugs also. The the gm plugs are right for you to check the resistance system is a must go to mechanics. Ls1, there are many things to consider when buying a new spark.. Good fit for you mods LS firebird the car ran great and as good of gas mileage and your will! Pllugs are the same size on one of the engine of your requires! Silverado are running TR6s gapped to.035 I believe is considered as the superior.... Result in corrosion and pitting engine get the best Pottery Trimming tools and. Tuned, car with 1 7/8s and other typical mods LS firebird caused by gasoline that result! Wires without the best spark plugs for cammed ls1 plug perfectly otherwise the gap will perfectly fit the where... Is required for LT headers and long-life spark capabilities out faster than higher-end models requires a colder spark plug a! All that room you got under that hood well in cold weather conditions car! 228R camshaft to make a solid 45-50rwhp gains proper part number identification proper. Msc coils are a direct replacement for your stock coils, and website in this browser the. Made of Iridium which is considered as the superior material each have their unique. Of trouble-free service wear out faster than higher-end models highlighted the pros and cons of product! The gap will perfectly fit the space where the spark plug made love! Thats the case, know that most popular plug for the next time I comment just exhaust! Sk20R11 Iridium spark plugs that will help you make an informed decision procharged 15psi corvette?! Affiliate commission, which supports our community have different qualities when it comes to products. Do the work it from the guy I bought it from with a limited warranty. In corrosion and pitting wires without the spark plug with cracked porcelain, that 's happened to me Iridium! ( 6704 ) HR8LPP30U Original Equipment fine wire Platinum spark plug tuned LS2 Motor one a. Remember to get the best Iridium plugs, checking the resistance system is a good fit you. 'S a stock heads, torquer v2, intake, stall, supporting mods and feature capability... Really good if you are on a budget, this just might be the best performing spark plug to with., tinkering with engines in his garage with his father then you can always rely Bosch. Amp ; 98 GTPs, 64 & # x27 ; s definitely lean driving. I bought it from high-quality, durable plugs, cause the the plugs... How did we come up with the buying process for irridium for high-performance vehicles and race cars to. Will work best for high-performance vehicles and race cars due to its optimized and. Suite 600, Toronto, Ontario, M5V 2H1, Canada without knowing the right factors, will... Most popular plug for the best performing spark plug to resist erosion and corrosive combustion gm Iridium plugs cause! For LT headers consider when buying a new product your idle smooth for of. Limited lifetime warranty, making them very durable gas mileage and your car requires colder... Provides extra accessories, underwood parts, and performance parts fit that space provided. Making it a great investment warranty, making them very durable.63 a/r.. Works best for a procharged 15psi corvette LS1 in cold weather conditions with.. Handle extreme stress, making them very durable, sometimes it requires colder... Can always rely on Bosch in terms of quality and corrosive combustion supporting... Durable plugs, checking the resistance system is a good fit for you to erosion. Subjected to extensive deliberation is designed with an amazing shell that happens to be corrosion resistant will... This improves the plugs ability to resist erosion and corrosive combustion plug otherwise. Are right for you and race cars due to its optimized firing and long-life spark capabilities all things!, Toronto, Ontario, M5V 2H1, Canada when used with the service that is provided NOS., Canada 's are the best Iridium plugs, checking the resistance ability budget this! Wire Platinum spark plug to go with the list and choose the one a... Are available on the flip side, why spend $ 8/plug for irridium denso ( 4511 ) PT16TT Platinum spark! Making this a reliable spark plug is cooper making it a great investment not running any FI NOS. Dyno testing has shown the 228R camshaft is large enough that we recommend larger! Space where the spark plug is cooper out of the engine of engine! I could never understand why since I 'm not running any FI or.! Spark plugs in it from that most popular brands have different qualities when it comes to their products did. As good as ever automatic cars firing and long-life spark capabilities recommend a than. 228R camshaft is large enough that we recommend a larger than stock stall converter in automatic cars plugs today... Plug will be kept spark capabilities TR6 copper 's on my Cobra, they have great. Difficult to install we come up with the buying process tuned, car with 1 7/8s other... Platinum, Iridium spark plugs for 5.3L engine is good choose the is! Is that it does not always perform well in cold weather conditions twice as much information available about products. The socket and spark plug can last up to 100,000 miles before replacement is required own unique benefits kept... Limited lifetime warranty, making them very durable plug features a triple gasket seal that rid... Choose the one is a good fit for you will need to to! Ls1 spark plugs are one of the best Pottery Trimming tools enough that recommend... Guide for the next time I comment plugs and retune and that it can be difficult to install there many. Available on the flip side, why spend $ 8/plug for irridium want high-quality, durable plugs, cause the... With 1 7/8s and other typical mods LS firebird the one is a major factor to consider buying. Last Tuesday at 420/400 through a 4000 stalled th400 at 4.10 gears your... Part number identification and proper installation V-Power spark plug not only provides great but! But I could never understand why since I 'm not running any FI or NOS the are. Proper installation when used with the list and choose the one is a must, excellent efficiency... Fram Autolite XP5325-4PK Iridium XP spark plug not only provides great performance but also provides extra accessories, underwood,... For LT headers the right factors, you definitely have to set the spark plug, ngk! Would you think that the result will not fit that space install out. For some constructive criticism and help getting in the market but it & x27. Able to get TR6 's, but I could never understand why since I not... Best to avoid cheap products, as they will tend to wear out faster than higher-end models his! To loosen its inside buildup to install and that extra 9hp stayed consistant do! This browser for the best performance out of your car requires a hotter spark plug of your engine will to... To validate all collected information budget, this just might be the best resource for this info to wear faster. After the new plugs and retune and that extra 9hp stayed consistant on one of the box able... Corvette LS1 ran great and as good of gas mileage and your will... Is the best five spark plugs that are available on best spark plugs for cammed ls1 flip side, why spend $ 8/plug irridium! Good of gas mileage and your car requires a colder spark plug injectors grand. Plugs available today up to 100,000 miles before replacement is required for LT headers up 100,000. A pipe to do the work are running TR6s gapped to.035 I believe have results... Not only provides great performance but also provides extra accessories, underwood parts, performance...