(Topic#232686) Charlie57 Valued Contributor Posts: 3098 Loc: Lebanon, Tennessee Reg: 03-30-08. These were to long for two of the locations. Yikes, from what I do know, the reach on those are way too short for vortec heads... they won't work as they should as the spark would not be far enough into the combustion chamber. ACCEL 0526-4 Copper Core Spark Plug, (Pack of 4) While not making use of several of the newer materials, these copper cored spark plugs are a little bit hotter compared to the typical plugs. Recommended Spark Plugs for Vortec Heads. I then … My application is for the Ford gt40p head with its funky spark plug angle as compared to the regular Ford cylinder heads. Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. For now, I am … … This may not seem like an important consideration, but install a standard reach small-block Chevy plug (like the one you can barely see here) into a longer-reach chamber like this iron Vortec head and the spark becomes shrouded and power will suffer. I use the Accel shorty spark plugs. The white looking plugs on the left are the passenger side (bank with the o2 sensor) and the tan/brown ones are the driver side. DAWG Veteran Member. need more info like what heads your running and what part number is the exsisting plug? Changed out my aluminum angle plug vortec heads for a pair of Edelbrock etec 200 straight plug heads. A spark plug’s reach is defined as the length of the threads. Anyone know what the spark plug gap should be on my vortec heads? I know that many people are just using 90º spark plug wire boots and are clearing headers. One bank is decidedly different from the other. If you have the 13/16 size plugs your good to go. Spark Plugs For Vortec Heads: 5613611: R44LTS, set of 8: 5614210: MR43LTS, set of 8: 25164641 #3, Rapidfire style, set of 8: P526S : Accel U-Groove “shorty” Double Platinum Header Plugs approximately 3/16" shorter then R44LTS plugs, set of 8 : Miscellaneous Parts For Vortec Heads: 12495499: GM Head Bolt Kit: 12495491: GM Flat Tappet HD Push Rod Kit: 12371041: Factory Roller … The plugs that I needed are 5/8 14mm .375 Be sure and chech the plug size before you order. Ever wonder why after all of these years we still have header/spark plug issues on a SB Chevy? I use AC 41-993 tapered seat plugs in my 1997, 5.7 Vortec small block. 590 Posts #2 • Apr 25, 2009. If your engine is not a Vortec engine, many of the spark plugs on the list may still be great options. A stock 1970 iron small-block Chevy head uses a completely different design spark plug than a GM LS engine. I've been reading a lot of posts about plug wires and routing. The Importance of Spark Plug Design. They quickly and completely burn the air/fuel mixture, ensuring higher cylinder pressure and more power. Sealing spark plugs to the heads generally falls into two categories: gaskets or tapered seats. Edelbrock may call their heads "Vortec" due to intake port design but they modified the plug requirements to be the same as many other aluminum heads (spark plugs with a gasket). I have Vortec heads with Hooker Super Competition headers in my Camaro. RHS® - Spark Plugs For All Of Your Street And Competition Needs! It's a Vortec-head LT1 roller cam 357 TBI I built in 2011. (Image/Jeff Smithi) You did a tech answer around two years ago which was … You will have to get a cam that will work well with lower compression (8:1-9:1). Link to post Share on other sites. These plugs are about 1/4" shorter than the norm so it allows you the needed air gap to keep your wires alive. CAST-IRON VORTEC CYLINDER HEAD ASSEMBLY. In keeping with a tradition of offering only the finest cylinder heads and components available, RHS® has selected the very best spark plug designs in the industry. 01-01-10 05:15 PM - Post# 1834386 I have aluminum heads and flowtech afterburner headers. it has the gasketed seat (flat) I now need a shorty Tapered Seat Plug. You can barely see the ground electrode. Lately I have been thinking on just finding a short block 350 and putting my Vortec heads and a hotter cam. I've tried to figure out the problem via a OBD1 datalog and not really seeing anything definitive so I pulled a few plugs to get a look. Discussion Starter • #1 • Mar 13, 2005. I think he liked the set up. Jeff (63CHVII) has a 283 with the Vortec heads and a mild cam. I already sent back the dome 283 pistons and the cam. Racing Head Service® offers ZEX™/Champion spark plugs for use in nearly any street or race application. Completely assembled with 1.940"/1.500" valves; Uses bare head P/N 12529093; 64-cc combustion chamber; Straight spark plugs; No heat risers; Requires Vortec-specific intake manifold; Camshafts with more than 0.475" lift require machining valve guide bosses and checking valve seal to valve spring retainer clearance ; Can be machined for … You also have to make sure you have the right thread length so the plug is far enough in the head for propper combustion. Those you listed have a .46" reach and the reach for a spark plug for vortec heads has to be at least .7+ inches. I'm running ngk bpr6efs plugs which are otherwise working ok. … ACCEL 0526-4 Copper Core Spark Plug, (Load of 4). Built of cast iron, these powerhouse heads upped the horsepower of these engines by magnitudes. Post: I need some shorty spark plugs. Quote; Share this post. Higher performance will certainly need a more effective spark plug, and these will certainly fit the costs for most individuals. Once you have determined if your car has a Vortec engine or not, then you will need to discover the model and year. Many spark plug manufacturers have issued statements saying that using anti-seize on spark plugs in 2018/19 is not advised. Send Private Topic View Profile . Joined: Mar 30, 2008 Location: Colebrook, Connecticut. one issue....now the Spark Plug seats are different. I don't know about the NGK's but Accel also makes a short plug… Some suggestions: AC/Delco are the factory stock plugs and I have had good success with them. Thing is I don't have my GT40P heads yet to determin this. For example, NGK, Autolite, Champion, Bosch, Denso, AC Delco, will all tell you not to use anti-seize with their modern coated spark plugs. Have looked and tried the recommended Champion RC12YC plugs and also the short Accel plugs (which are about the same length). . I know a lot of guys are going to say, "make your own" but I'd rather buy something off the shelf. Spark Plug Accessories Year-Make-Model Year *select 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 … I need to get some new spark plugs. I've got a set of Vortec heads on my TBI motor. But they are very … I changed my Original 68 -327 SBC heads over to a new set of Heads with larger valves and better flow. Chevy V8s. 90 degree plug boots worked very well on the old heads but now the plugs on the new heads are very close to my 1 3/4" header tubes. Discussion Starter • #1 • Nov 1, 2006. This very well may be my answer as well. 636 Posts . any good spark plugs and what gap do you start with for 383 stroker: thanx, scott Jul 29, 2008 #2. I have Block Hugger Headers, and have to run a short plug. This photo shows what happens when a too-short 0.460-inch reach spark plug is used in a Vortec head. The overall length has been reduced 3/16 in to 3/8 in (depending on the specific spark plug) to gain critical air gap between the spark plug boot and the exhaust manifold or header tube. R42LTS - Stock and a good place to start. Now, the new E3 website is an inclusive portal for all spark plug applications as well as a technical center for information about our fuel-efficient line of premium performance OEM replacement plugs. These upgraded production cylinder heads are ideal for 400-450 horsepower street and racing (great for circle track applications) engines. Note how the electrode is absolutely buried inside the spark plug mounting threads. 723 Posts . From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads. Jul 29, 2008 #3. This is primarily attributed to the high port flow in the .300”-.500” valve lift area, wide bowl, and back-cut intake valve and exhaust. Getting my money back for the pistons and having them … the other plug was an Accel #437S. 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. I'm having problems with burning lead boots being so close to extractors and shorting from plug to extractor and need a shorter plug. . I was also looking for a short plug. Even before considering heat range, it’s critical to choose the correct spark plug design for the particular cylinder head you are using. The plugs I bought per the head dealer were Autolite AR3924. Loki80RS Veteran Member. This absolutely kills combustion efficiency. Im having the same issue with my sandersons long tubes and loooking for a way to solve burnt plug boots too. Don't know the part # of the top of my head but I got them from Summit Racing (as Vile pointed out Jegs will have them also). R43LTS (colder) R44LTS (coldest) NGK TR5 (stock equivalent ) TR55 (colder) TR6 (coldest) Autolite 103 … These CNC-machined aluminum Fast Burn cylinder heads from Chevrolet Performance are designed for 1958-2000 283-400 c.i.d. What I'm looking for is something clean . Make sure the spark plug is not too short. ACCEL's patented race proven spark plugs in a Shorty configuration. I'm in the final stages of collecting parts for my engine rebuild - 400 sbc into 72 base - street fire HEI with integrated coil, headers, vortec heads, eddy air gap. This helps eliminate burning the spark plug boot or dimpling the header tube. User Info. The spark plugs in the Vortec heads are moved closer towards the exhaust valve, movint it towards the port giving you that much less clearance. The data can help determine the best for your particular situation. I'm assuming we're talking about the L31, 5.7 (non LS) Vortec in this thread. Vortec Bowtie cylinder heads come with large valves, a thick deck surface and 66-cc combustion chambers. After checking I found that you can't use an Accell plug in Dart Pro 1 heads. misturmoneybags 0 misturmoneybags 0 Junior Member; Members; 0 46 posts; … But you may need to study the specifications carefully. Messages: 823 Likes Received: 0. I have a 350 chev motor with the vortec heads on and big extractors. Find Chevrolet Performance 19300955 Chevrolet Performance Fast Burn Cylinder Heads and get Free Shipping on Orders Over $99 at Summit Racing! I have Super Comps,vortec heads and ac delco plugs. The guys at the parts store ask me what year truck... well, these heads don't come on a 93 Chevy, so I can't tell them that. Messages: 182 Likes Received: 0. I am using Vortec heads and the plug hole is just a little closer to the exhaust port so this makes the plug a little closer to the header. I do not know the number right now but they are short compared to the Champions I had. AC Delco Rapid Fire Spark Plugs R44LTS ; AC Delco Rapid Fire Spark Plugs MR43LTS; AC Delco RapidFire No 3 Sparkplug; ACCEL P526S U-Groove “SHORTY” Double Platinum (approximately 3/16″ shorter then R44LTS) ACCEL 516; Autolite 26; Autolite 104; Champion RS12YC; Bosch HR10B; Bosch HR10BX; Bosch HR9DC; Article Sources. I 've been reading a lot of Posts about plug wires and routing, ( Load of 4 ) 0. Head dealer were Autolite AR3924 Apr 25, short spark plugs for vortec heads and routing race proven spark plugs in 2018/19 is not short... N'T have my GT40P heads yet to determin this also the short accel plugs ( which about! A spark plug wire boots and are clearing headers cast iron, these powerhouse upped. Just using 90º spark plug ’ s reach is defined as the length of the threads air/fuel mixture ensuring! Gap to keep your wires alive: AC/Delco are the factory stock plugs and what gap do you with. 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