The new spark plug has an Iridium tip instead of the current Platinum tip. 12-22-08 09:59 AM - Post# 1590426 In response to Rick_L I was getting nervous yesterday while removing a pipe plug out of the side of one of my heads and I saw the piston through the spark plug hole on the #1 hole. They are what's factory listed for a 96-99 Chevy pickup with a 350. Chevrolet Performance 12691728 SBC Cast Iron Vortec Cylinder Head Chevy Small Block V8, Assembled Cylinder Head Style, Cast Iron, Straight Spark Plug Style. Last edited by reddogg12 on Feb 20 2016, 4:53am, edited 1 time in total. Paired with a decent cooling system, the Vortec heads will be as dependable as any cast iron head that came before it and will increase the over-all performance of your engine. AC Delco R44LTS6. Chevy placed a vortex or … A spark plug’s reach is defined as the length of the threads. How To Choose The Spark Plug Wires For 4.3 Vortec Engines? The original Chevy Vortec engine was built in 1986, a 4.3 L V-6 engine. I've been reading a lot of posts about plug wires and routing. I have a 350 engine I built myself using factory Vortec heads. In this video, I show how to repair stripped spark plug threads PERMANENTLY. I went to the store and got some anti-seize. Is your spark plug hole stripped? They are probably equivalent to a 43 or 44 AC. This item: Pirate Mfg Center Bolt Head Spark Plug Wire Loom Brackets 87-98 Small Block Chevy Sbc 350 $17.79. Clean the spark plug threads and ensure the cylinder head is clean of debris. Not terribly different from your crate engine. Sometimes on the aluminum heads, people forget to put anti-seize compound on the plug and it pulls the threads out when plugs are removed. • The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01 mm (0.040 in) when the spark plug is made. All the heads for those years are the same. I should have been more clear. Go to the website of your local auto repair shop or online parts distributor, and plug in your VIN to find all parts applicable to your 4.3 Vortec engine. These cylinder heads are machined for both center and perimeter bolt valve covers, please see your instructions to avoids oil leaks. Thread reach does vary, but … replaces casting numbers: 14101083, 14096217, 14102191, 14102193, intake runner 176cc / combustion chamber 64cc vortec style, with heat riser / 87 95 intake manifold bolt pattern, center bolt down valve cover holes / angle spark plug, recommended to be replaced in pairs: eq-ch350g: eq-ch350ga: 350: 5.7: 1987 - 1995 Most Chevy heads place the spark plug squarely between the head bolts. What really makes this plug stand out is the copper core center. This is a discussion on what spark plugs fits vortec heads on a 350 chevy engine? Some heads are almost identical, the only significant s=difference being the type of spark plug used, so be sure to inspect the head closely to be sure the right plug is used. the head is probably striped. Is your spark plug hole stripped or cross threaded? Here's a fast and easy hack to repair the damaged spark plug threads in your small engine equipment. Plug reach is .708", 14mm threads, tappered seat, 5/8" wrenching . In reality, the ONLY benefit to angled plug heads is to provide more spark plug boot clearance with some header designs.AdvertisementClick Here to Read MoreAdvertisement The idea of these designs producing more power came from […] • A new spark plug has been released for use in the above vehicles. You will be able to find a high-quality plug for the 5.7L Vortec that will not cost you an arm and a leg and will not break the bank either, but will work great. Straight spark plug design; No heat risers; Drilled and tapped for 7/16"-14 screw-in studs; Dual bolt patterns for Vortec and early style intake manifolds (early model P/N 10051103; Vortec intakes P/N 12366573, 12496820, 12496821, 12496822 or 12489371) The LT1/LT4 engines, while similar, do not use the same cylinder heads as a typical GEN I small-block. what do I need to run if this is the wrong plug? what spark plugs fits vortec heads on a 350 chevy engine? Vortec 5300’s with the LC9 and LH6 engine variations, manufactured from 2007-2011 are prone to fouling spark plugs, which is caused by carbon buildup due to the PCV valve and the valve cover. Final Thoughts On Spark Plugs for the 5.7 Vortec Engine. Some people think that angle plug heads produce more power than straight plug heads. The best spark plugs for your 5.7L Vortec will actually have a Volvo logo on the plug. The Vortec engine is a more modern version of the original 350 Chevy small block that is designed with an improved head that creates a vortex inside the combustion chamber for better air/fuel atomization. 3. The most popular thread size for domestic plugs is 14 mm, although a few older Ford engines used the larger 18mm size back in the '60s. Even a factory Vortec iron cylinder head from the late ‘80s uses a different plug design than the older small-block Chevy iron heads. Torque sequence for big block aluminum heads Spark plugs. These are plain $2 spark plugs, not platinum or anything fancy. Racing Head Service® offers ZEX™/Champion spark plugs for use in nearly any street or race application. The Vortec technology comes from the word "vortex." If you don’t pay attention, it’s very easy to install the wrong spark plug. That makes Vortec a real winner in my book! Autolite 605. I have a set of vortec heads on my 77 Camaro what year heads I don't know,what spark plug do I need to use in a vortec head Right now I am running R42lts plugs. Spark Plug Failure from Carbon Buildup – Vortec 5.3. One additional point with Vortec heads is they take a special-length reach spark plug. AFR LT-1 / LT-4 / Vortec Heads/ Late Model TBI/TPI Heads - Your factory accessory bolts and center bolt valve covers need to be shortened 3/16" or they will bottom out. The name "Vortec" can be confusing because GM used that name for … 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. I use Autolite 605 spark plugs in it. Because of this, it has become a very popular swap. Then tighten the plug as specified below: With a Torque Wrench: Please note there are slight variations in torqueing recommendations between spark plug manufacturers. The reach is defined as the length of the threaded portion of the spark plug. 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 … 0 Reviews | 0 Answered Questions On Backorder Ships FREE STORE PICKUP Availability. 10/11 The Vortec head moves the spark plug closer to the exhaust valve, … They are the good heads I ordered years ago from a speed shop ,I can't think of the name right now but it was something and dickey racing. This common misconception is not true! Read More >> How to Check a Spark Plug. Champion 13 / … As for my last two spark plug changes, I haven't used any anti-seize and they came out fine until the thread came up about the spark plug breaking in the cylinder head. Only 8 left in stock - order soon. In Stock. The 7.4 L 7400 V-8 Vortec engine was produced from 1996 to 2001 and was a fourth-generation Vortec engine. Unfortunately, the only remedy here is replacing the full cylinder head. A vortec 350 head is a vortec 350 head.. Used from 1996-01 in chevy and GMC full size trucks, vans, SUV. AC Delco Rapid Fire Spark Plugs R44LTS; AC Delco Rapid Fire Spark Plugs MR43LTS The regular 350 head utilizes a 90 degree intake bolt angle while the Vortec makes do with a 72 degree bolt angle. A stock 1970 iron small-block Chevy head uses a completely different design spark plug than a GM LS engine. Recommended Spark Plugs for Vortec Heads. 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. Due to the different tip design, the gap of the spark plug has also changed. This plug also comes with a nickel-chrome alloy that provides the same benefit. These Vortec heads employ a tapered seat like older small-block Chevy iron heads but the … The Vortec combustion chamber is a kidney-shaped design that promotes better combustion and will have the spark plug located near the center of the chamber. I also read that you leave about a 1/4 inch at the spark tip with none applied and apply the rest of the spark plug with anti-seize. Copper, of course, is a fantastic conductor of heat, which in this case helps to transfer the heat through your spark plug effectively. The Vortec head uses the newer tapered-seat style spark plug (left) while most aluminum heads employ the gasketed style spark plug (right) with the longer 0.750-inch thread length. The Chevrolet L31 5.7L Vortec cylinder head is the best flowing production head Chevy has made for the Gen I SBC engine to date. Screw in the spark plug finger tight until the gasket meets the cylinder head. During the BBC production, the spark plugs changed from gasketed to tapered seat. Ships from and sold by Pirate Mfg.. Pirate Mfg Ball Milled Polished Aluminum Spark Plug Wire Looms Holders SBC BBC 302 350 454 $58.93. AC Delco R44LTS spark plugs since these are vortec style heads require a 3/4″ reach plug instead of the TBI 1/2″ reach plugs. Choosing spark plug wires on the web is an easy task to perform on any parts website. I know a lot of guys are going to say, "make your own" but I'd rather buy something off the shelf. Heads are machined for both center and perimeter bolt valve covers, please see your instructions to avoids oil.... Same cylinder heads as a typical Gen I SBC engine to date 7400 V-8 Vortec engine produced. A new spark plug aluminum heads Some people think that angle plug heads Vortec cylinder head is Vortec! Late ‘ 80s uses a different plug design than the older small-block Chevy iron heads the above vehicles released! Also changed Delco R44LTS spark plugs for your 5.7L Vortec will actually have a Volvo logo the. 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