I was also looking for a short plug. Thing is I don't have my GT40P heads yet to determin this. These CNC-machined aluminum Fast Burn cylinder heads from Chevrolet Performance are designed for 1958-2000 283-400 c.i.d. I already sent back the dome 283 pistons and the cam. For example, NGK, Autolite, Champion, Bosch, Denso, AC Delco, will all tell you not to use anti-seize with their modern coated spark plugs. It's a Vortec-head LT1 roller cam 357 TBI I built in 2011. Post: I need some shorty spark plugs. I then … These were to long for two of the locations. 723 Posts . You also have to make sure you have the right thread length so the plug is far enough in the head for propper combustion. Note how the electrode is absolutely buried inside the spark plug mounting threads. This very well may be my answer as well. Joined: Mar 30, 2008 Location: Colebrook, Connecticut. 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. need more info like what heads your running and what part number is the exsisting plug? For now, I am … Racing Head Service® offers ZEX™/Champion spark plugs for use in nearly any street or race application. (Topic#232686) Charlie57 Valued Contributor Posts: 3098 Loc: Lebanon, Tennessee Reg: 03-30-08. 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. The data can help determine the best for your particular situation. 636 Posts . If you have the 13/16 size plugs your good to go. The plugs that I needed are 5/8 14mm .375 Be sure and chech the plug size before you order. I use AC 41-993 tapered seat plugs in my 1997, 5.7 Vortec small block. 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. 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). I know a lot of guys are going to say, "make your own" but I'd rather buy something off the shelf. 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. This helps eliminate burning the spark plug boot or dimpling the header tube. I have Block Hugger Headers, and have to run a short plug. 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. Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. R42LTS - Stock and a good place to start. I think he liked the set up. Quote; Share this post. These plugs are about 1/4" shorter than the norm so it allows you the needed air gap to keep your wires alive. I'm having problems with burning lead boots being so close to extractors and shorting from plug to extractor and need a shorter plug. Chevy V8s. What I'm looking for is something clean . 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. one issue....now the Spark Plug seats are different. A spark plug’s reach is defined as the length of the threads. Built of cast iron, these powerhouse heads upped the horsepower of these engines by magnitudes. . I'm assuming we're talking about the L31, 5.7 (non LS) Vortec in this thread. Some suggestions: AC/Delco are the factory stock plugs and I have had good success with them. You can barely see the ground electrode. Once you have determined if your car has a Vortec engine or not, then you will need to discover the model and year. Changed out my aluminum angle plug vortec heads for a pair of Edelbrock etec 200 straight plug heads. 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. ACCEL 0526-4 Copper Core Spark Plug, (Load of 4). 590 Posts #2 • Apr 25, 2009. This photo shows what happens when a too-short 0.460-inch reach spark plug is used in a Vortec head. Jeff (63CHVII) has a 283 with the Vortec heads and a mild cam. I changed my Original 68 -327 SBC heads over to a new set of Heads with larger valves and better flow. Sealing spark plugs to the heads generally falls into two categories: gaskets or tapered seats. Send Private Topic View Profile . … Many spark plug manufacturers have issued statements saying that using anti-seize on spark plugs in 2018/19 is not advised. Loki80RS Veteran Member. I've been reading a lot of posts about plug wires and routing. 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. 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 … I'm running ngk bpr6efs plugs which are otherwise working ok. A stock 1970 iron small-block Chevy head uses a completely different design spark plug than a GM LS engine. Find Chevrolet Performance 19300955 Chevrolet Performance Fast Burn Cylinder Heads and get Free Shipping on Orders Over $99 at Summit Racing! misturmoneybags 0 misturmoneybags 0 Junior Member; Members; 0 46 posts; … 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. Even before considering heat range, it’s critical to choose the correct spark plug design for the particular cylinder head you are using. Make sure the spark plug is not too short. My application is for the Ford gt40p head with its funky spark plug angle as compared to the regular Ford cylinder heads. 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's patented race proven spark plugs in a Shorty configuration. User Info. Anyone know what the spark plug gap should be on my vortec heads? I use the Accel shorty spark plugs. This absolutely kills combustion efficiency. . I need to get some new spark plugs. 01-01-10 05:15 PM - Post# 1834386 I have aluminum heads and flowtech afterburner headers. I do not know the number right now but they are short compared to the Champions I had. I have Vortec heads with Hooker Super Competition headers in my Camaro. 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 … 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. Lately I have been thinking on just finding a short block 350 and putting my Vortec heads and a hotter cam. Discussion Starter • #1 • Nov 1, 2006. Vortec Bowtie cylinder heads come with large valves, a thick deck surface and 66-cc combustion chambers. 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 … 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 have Super Comps,vortec heads and ac delco plugs. R43LTS (colder) R44LTS (coldest) NGK TR5 (stock equivalent ) TR55 (colder) TR6 (coldest) Autolite 103 … Messages: 823 Likes Received: 0. (Image/Jeff Smithi) You did a tech answer around two years ago which was … After checking I found that you can't use an Accell plug in Dart Pro 1 heads. 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. I know that many people are just using 90º spark plug wire boots and are clearing headers. 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. 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. If your engine is not a Vortec engine, many of the spark plugs on the list may still be great options. the other plug was an Accel #437S. DAWG Veteran Member. Getting my money back for the pistons and having them … Messages: 182 Likes Received: 0. Higher performance will certainly need a more effective spark plug, and these will certainly fit the costs for most individuals. The Importance of Spark Plug Design. I don't know about the NGK's but Accel also makes a short plug… But they are very … Jul 29, 2008 #3. One bank is decidedly different from the other. it has the gasketed seat (flat) I now need a shorty Tapered Seat Plug. Im having the same issue with my sandersons long tubes and loooking for a way to solve burnt plug boots too. CAST-IRON VORTEC CYLINDER HEAD ASSEMBLY. Have looked and tried the recommended Champion RC12YC plugs and also the short Accel plugs (which are about the same length). 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). Discussion Starter • #1 • Mar 13, 2005. … 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. From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads. They quickly and completely burn the air/fuel mixture, ensuring higher cylinder pressure and more power. The plugs I bought per the head dealer were Autolite AR3924. You will have to get a cam that will work well with lower compression (8:1-9:1). Ever wonder why after all of these years we still have header/spark plug issues on a SB Chevy? any good spark plugs and what gap do you start with for 383 stroker: thanx, scott Jul 29, 2008 #2. 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. RHS® - Spark Plugs For All Of Your Street And Competition Needs! I have a 350 chev motor with the vortec heads on and big extractors. Recommended Spark Plugs for Vortec Heads. I've got a set of Vortec heads on my TBI motor. But you may need to study the specifications carefully. These upgraded production cylinder heads are ideal for 400-450 horsepower street and racing (great for circle track applications) engines. Link to post Share on other sites. Not too short a new set of Vortec heads on my TBI motor have looked and tried the recommended RC12YC... 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