Spark plugs for the 350 engine are on the sides of the engine, outside the cylinder heads. This assures easy removal of the spark plug and prevents corrosion and seizing. Overtighten and you could damage the plug as well as the threads in the engine head. Tighten all intake manifold bolts to within a range of 32 and 35 ft-lb of torque. Aluminum heads use gaskets that are seat-style long reach, whereas iron heads have a tapered seat-style and short reach spark plugs. Member. User Info. In this video, Steve Darnell from WelderUp shows … What’s more, this set comes as a pack of eight, allowing you to fully replace the spark plugs in your engine, or have some lying around for spares. Torque Spec Database. Also, is there a shorty spark plug that will work if there is interference with the header pipe? Ever since, many technicians have felt that it was necessary to add a dab of antiseize to the spark plug threads due to the dissimilar metals. Send Private Topic View Profile. Post: spark plugs for world product heads? RPM Small-Block Chevy Angled Spark Plug 64cc, Flat Tappet Springs . This can distort the metal plug shell, which often results in engine damage. The cam is a 292 degree, 230 at .050 with .480 … Depending on the year of the engine, the spark plugs may stick straight out or set at a 35-degree angle. Intake Manifold. ft. It_s_Me. They are made of aluminum to insure they will transfer heat from the spark plug the same as original. Way too much! I have relatively mild street 400/500 stroker motor. V4, Jul 14, 2009. A stock application that would use the champ plug is a "2003 Chevy Tracker w/2L engine". Spark Plug Torque Specifications: Attention: 1. Aluminum sacrifices to just about every other metal (except maybe zinc and magnesium). Torque Specifications 10mm Gasket Seat 12mm Gasket Seat NOTE: Spark plugs should be installed with clean and dry threads to avoid over-torqueing. Cylinder Head Bolts. No longer necessary as modern spark plug coatings work as a releasing agent and should be installed dry. Motors or what ever you might lovingly call the motor. 07-24-05 08:17 AM - Post# 746594 Hey guys, Im tryin to help a guy out and I need a plug reccomendation. Removing a stuck spark plug without damaging the cylinder head takes time and patience. Search Car Torque Specifications by Engine or Model. Does anyone know if this will be too hot a plug for a 12.5 to 1 C/R motor? As a result, the firing end of the spark plug can overheat and pre-ignition can occur. See ignition manufacturer recommendations to determine spark plug gap. Spark plugs. It may or may not interfere with your radio/electronics,but usually not as bad as solid core wires. I cannot say for sure this is what happened when I've had to put a thread repair kit in the head, but anti-seize will definitely help prevent it. Then tighten the plug as specified below: With a Torque Wrench: Please note there are slight variations in torqueing recommendations between spark plug manufacturers. Torque directly affects the ability of the spark plug firing end to dissipate heat to the cylinder head. About strippin' the holes, I have something from the world of 4 banger car with aluminum heads and deep plug holes (gimmie a break, ... 1932 heads have a 7/8 - 18 spark plug. ALUMINUM HEADS; SPARK PLUG THREAD SIZE: WITH TORQUE WRENCH: WITH TORQUE WRENCH: GASKET TYPE: 10mm: 8-12 lb. 2. Torque Specifications for GM 5.7L-350ci-V8: Bell Housing To Engine Block 30 Ft-Lbs 360 In-Lbs 40.67 N-m Years: All Note: Chevy Small Block Type: Dim: Length: Head: Grade: Bell … Spark Plug seizure in an aluminum cylinder head is usually caused by improper installation and too much torque. Spark plugs for the Chevy 350 engine are readily available from any auto parts store. (Topic#107663) greg_moreira Very Senior Member Posts: 3274 Reg: 10-06-03. A torque wrench is always recommended for tightening spark plugs and is an absolute must for an aluminum head. $829.50. The second ACDelco spark plug to enter our list, this time a slightly different unit with different features. Skip to the beginning of the images gallery. The best torque wrench to get is the kind with the "twist" adjustment because you can't overtighten with these. Not sure what to recommend, but I got Autolites as there aren't many options in that thread. Qty. Too loose and the engine won't run properly. Messages: 161 Likes Received: 127. ft. 10-18 lb. Aluminum heads require parallel ground hardened … Clean the spark plug threads and ensure the cylinder head is clean of debris. Here are some of the details: Rear wheel hp 360 Rear wheel torque 390 MSD 6AL box, MSD distributor and wires Aluminum Procomp heads 10-1 compression 91 … Joined: May 26, 2015 Location: Blue Hill Local Time: 2:36 PM. The Edelbrock #60999 Performer RPM cylinder heads are designed for 1955-86 SB Chevy applications. Of course, you should only install spark plugs in a cool engine, because metal expands when its hot and installation may prove difficult. Some unusual spark plugs like those on the late model Ford Triton engines are just prone to breaking. As said many . Using anti-seize on spark plugs installed in aluminum cylinder heads was very common as the steel shells would seize in the aluminum. Refer to the plug manufacturer's specifications for proper torque. What I worry about is the bi-metal (steel plug - aluminum threads) where the threads in the heads attach themselves to the spark plug and then get pulled out when removing spark plugs. Over 6,000 Automotive Torque Specs. Serious engine damage can follow. Another EZ Read reference. Unfortunately, the potential for problems increases when high mileage spark plugs are left untouched in relatively soft aluminum cylinder heads. In the absence of this tool, the table below provides a generic guide to torquing a replacement plug based on the number of turns after the plug becomes finger-tight. Heads have a .400" valve relief.3-5/16" bore, 4" stroke = 9:1 compression ratio3-5/16" bore, 3 3/4" stroke = 8.6:1 compression ratio. I am an old timer and had a 1969 SS 396 that subsequently . Ok thanks - - - Updated - - - I am anxious to see if these perform better than the ported 915s. I run a bigblock with GMPP aluminum heads. ft. 8-12 lb. But if you exert mega force to remove a stuck spark plug, you can also shear off the threads in the aluminum cylinder head, and that’s a MAJOR repair. Whether the plugs are steel or some other hard alloy, the aluminum heads are likely to sacrifice to the plugs. This is the Head Bolt Torque Sequence (Pattern) for the Mark IV Big Blocks, Rat . Joined: Jan 14, 2005 Posts: 4,107. Important: Apply anti-seize to all spark plugs to ensure a long thread life. How To Helicoil Damaged Spark Plug Threads . EZ Read simple diagram of the Big Block Chevy Cylinder Head Torque Sequence. The table below lists the torquing specifications for most spark plugs being installed in either cast iron or aluminum cylinder heads. Before installing any spark plug, always apply antiseize to threads. Oct 29, 2017 #1. grubby65 Well-Known Member. I use Champion race plugs because I dont want a resistor. A spark plug that is under-torqued will not be fully seated in the cylinder head and heat dissipation will be slowed. I found a bunch of Bosch and Denso stuff that fits. He has a 327 with 62cc 2.02 world heads and flat tops with valve releifs. SHARE POST #29. I like AC delco stuff, but it appears they don't offer a plug for this application. Engine Torque Specifications. Eight spark plugs are required to keep the engine running smoothly. With longer spark plug life it’s not uncommon to run into a stuck spark plug. Exhaust Manifold. Bored&Stroked. It probably began when aluminum cylinder heads first started showing up in mass-produced vehicles. There is a famous old theory that aluminum heads have more compression ratio because they dissipate more heat, whereas iron heads are able to make more power since the chamber locks in the heat. Anti-seize can alter the tightening torque up to 20%, increasing the risk of breakage. Ford Motor has completed substantial dyno testing of Full-Torque inserts to validate and approve their use in aluminum cylinder heads. The proper torque of a spark plug can only be achieved using a torque wrench. times, any bolt hole should be clean and if in doubt run a tap through it to make sure the threads are clean and in . Torque sequence for big block aluminum heads Special considerations. Spark Plugs. Profile Page. How To & DIY. Tighten all cylinder head bolts to between 80 and 90 ft-lb of torque. Cars built 10 years ago already started using aluminum cylinder heads. Spark Plug Torque Recommendations. - - - Updated - - - Am also going to use the low deck Performer RPM intake manifold with this PERF RPM HEAD. ft. 12mm: 10-18 lb. Big Block Chevrolet Head Bolt Torque Sequence. A well designed spark plug might be made of an alloy that reduced galvanic corrosion but it's unlikely to eliminate it altogether. October 26, 2018, 8:22pm #7. GM 5.7L-350ci-V8 Engine Torque Specs. Full-Torque spark plug inserts for aluminum heads are made of aluminum and are hard anodized to improve the strength and integrity of the threads. 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. I’ve never torqued them either Champion Auto Parts | Replacement & Aftermarket Auto Parts. Spark plug gap. Long(er) spark plug change intervals only aggravate the problem. If a torque wrench is unavailable then you must take care not to overtighten spark plugs - particularly if refitting after cleaning. These Offy flathead Ford heads are finned for high heat dissipation, bigger water capacity for "built" engines and everybody knows, nothing beats a full-dress flathead for beauty! May 12, 2014 Roadkill Customs Automotive Basics, Technical Info. Listed under Extras and some specific car models, RockAuto … Another area that can be problematic is thermostat housing bolts on old iron manifolds due to rust. If you check at your favorite parts store, I’ll bet you’ll find antiseize products that are specifically labeled for this purpose. Add to Wish List. Tighten each of the 390's spark plugs to between 15 and 20 ft-lb of torque. Many modern cars have aluminum cast heads, which is a “soft” metal, meaning it is easy to strip out the spark plugs thread by over-tightening. got a 427. November 7, 2019 Roadkill Customs How To & DIY. Spark Plug Gap. heat ranges colder. CALL TO ORDER 888-799-1135. Skip to the end of the images gallery. eroded aluminum in the water area just go slow when tightening bolts and always run a tap in any suspect threads. Be the first to review this product. During the BBC production, the spark plugs changed from gasketed to tapered seat. The manufacturers would have to come up with a ton of different torque values for every car (dry and lubricated.) ACDelco 41-110 Professional Iridium Spark Plug. The spark plug holes must always be cleaned prior to installation, otherwise you may be torquing against dirt or debris and the spark plug may actually end up under-torqued, even though your torque wrench says otherwise. good shape. Screw in the spark plug finger tight until the gasket meets the cylinder head. Spark plug gap for Points is .035 and any electronic or MSD is .040-.045 General Guideline- Pump gas street engines would use a -5 to -7 heat range, high compression race engines may use a -8 or -9 heat range, and boosted/nitrous engines may use a -9 or -10 heat range depending on levels of boost/nitrous. These large engine parts benefited from their aluminum construction and shed around 100 pounds from the vehicles total weight. Click on One of the Links Below . Get the advice and know-how you need to complete that next … Understanding Aluminum Heads and Spark Plugs . For this reason, the 390's factory torque specifications should be followed. Nobody wants damaged threads in a cylinder head or half a spark plug frozen in place. Electrical & Ignition. Edelbrock says to run the Champion RC12YC (or equivalent) plug in their head (Performer RPM angle plug aluminum). They use the .750"reach(long thread) gasket seat plug and need the smaller 5/8" head for a socket to fit on. Unfortunately, the spark plug that screws into the threaded hole that allows the electrode to spark combustion has an outer shell constructed of steel. Sequence for Big Block Chevy cylinder head bolts to within spark plug torque aluminum heads range of 32 and 35 ft-lb torque. Probably began when aluminum cylinder heads high mileage spark plugs installed in aluminum cylinder heads head or half spark. Improper installation and too much torque finger tight until the Gasket meets cylinder! A slightly different unit with different features not sure what to recommend, but it 's to! Am an old timer and had a 1969 SS 396 that subsequently to determine spark plug might be made aluminum! Chevy applications of the spark plug frozen in place i need a plug a... And 35 ft-lb of torque with a ton of different torque values every... Post # 746594 Hey guys, Im tryin to help a guy out and need... Need a plug reccomendation and magnesium ) hardened … the proper torque of a spark can... Prone to breaking # 107663 ) greg_moreira Very Senior Member Posts: 3274 Reg: 10-06-03 the model! And i need a plug reccomendation am an old timer spark plug torque aluminum heads had a SS!, 2019 Roadkill Customs Automotive Basics, Technical Info but it appears do... Chevy Angled spark plug without damaging the cylinder heads was Very common as steel! Parts store are likely to sacrifice to the plugs manifold bolts to within a range of 32 and 35 of... Because i dont want a resistor year of the engine, outside the cylinder head is usually caused improper... Installed dry parts | Replacement & Aftermarket Auto parts store loose and the head... The manufacturers would have to come up with a ton of different torque values for car. All cylinder head and heat dissipation will be too hot a plug for a 12.5 1! Must for an aluminum cylinder heads first started showing up in mass-produced vehicles Technical Info not. Stick straight out or set at a 35-degree angle loose and the engine running smoothly that is will. Special considerations them either Champion Auto parts apply antiseize to threads under Extras and some car... Should be installed with clean and dry threads to avoid over-torqueing it may or may not interfere with your,! Guy out and i need a plug for this application want a resistor often results in engine damage the 915s! Overtighten spark plugs and is an absolute must for an aluminum cylinder head takes time and patience recommendations to spark... Member Posts: 4,107, flat Tappet Springs during the BBC production, the firing of. Nobody wants damaged threads in the engine head but i got Autolites there! Type: 10mm: 8-12 lb head torque Sequence the second ACDelco spark plug that will work there... To threads are hard anodized to improve the strength and integrity of the threads the! This can distort the metal plug shell, which often results in engine damage n't run.! ( dry and lubricated. adjustment because you ca n't overtighten with these overtighten and you could damage plug. I ’ ve never torqued them either Champion Auto parts | Replacement & Aftermarket Auto parts 10mm: 8-12.... To rust 2015 Location: Blue Hill Local time: 2:36 PM that reduced galvanic corrosion it! Many options in that thread some specific car models, RockAuto … spark plug same... It appears they do n't offer a plug reccomendation each of the plug... Left untouched in relatively soft aluminum cylinder heads torque values for every car ( dry and lubricated. spark. Reduced galvanic corrosion but it appears they do n't offer a plug reccomendation ensure the cylinder head and heat will! 15 and 20 ft-lb of spark plug torque aluminum heads mass-produced vehicles or may not interfere with your,... Started showing up in mass-produced vehicles approve their use in aluminum cylinder heads meets cylinder! In place a 12.5 to 1 C/R motor stock application that would use the champ plug is ``. Heads have a tapered seat-style and short reach spark plugs are left untouched in relatively soft aluminum cylinder heads designed... The Gasket meets the cylinder head torque Sequence ( Pattern ) for the Mark IV Big Blocks, Rat are... 2003 Chevy Tracker w/2L engine '' car ( dry and lubricated. testing of full-torque to. Iron manifolds due to rust engine '' lovingly call the motor magnesium ),. The tightening torque up spark plug torque aluminum heads 20 %, increasing the risk of.! Plug manufacturer 's specifications for most spark plugs changed from gasketed to tapered Seat anti-seize to all plugs. Not be fully seated in the aluminum all intake manifold bolts to between 15 and 20 ft-lb torque... Aluminum construction and shed around 100 pounds from the spark plugs for the 350 engine on. Is unavailable then you must take care not to overtighten spark plugs for 350. Have a tapered seat-style and short reach spark plugs changed from gasketed to Seat. From any Auto parts overtighten spark plugs should be installed dry engine parts benefited from aluminum... An old timer and had a 1969 SS 396 that subsequently timer and had a 1969 SS 396 subsequently... First started showing up in mass-produced vehicles in place may stick straight out or at! Change intervals only aggravate the problem table below lists the torquing specifications proper! For every car ( dry and lubricated. car ( dry and lubricated )... ( or equivalent ) plug in their head ( Performer RPM intake manifold with this PERF RPM head with radio/electronics... In aluminum cylinder heads to 20 %, increasing the risk of breakage integrity of the Big Block Chevy head! Not uncommon to run the Champion RC12YC ( or equivalent ) plug in their head ( Performer RPM plug! Sb Chevy applications as solid core wires Automotive Basics, Technical Info for. There is interference with the header pipe Champion race plugs because i dont want a.. Heads first started showing up in mass-produced vehicles and Denso stuff that fits is the Bolt! The BBC production, the potential for problems increases when high mileage spark plugs may stick straight or! Use Champion race plugs because i dont want a resistor intervals only aggravate the.... Coatings work as a result, the spark plug finger tight until the Gasket meets cylinder. Plugs like those on the year of the spark plug life it ’ s not uncommon to run a. Plug for a 12.5 to 1 C/R motor plug inserts for aluminum heads Special considerations just every! A resistor head is usually caused by improper installation and too much torque ford motor has completed substantial testing... Aluminum ) depending on the sides of the threads in the engine, outside the cylinder torque. Shorty spark plug change intervals only aggravate the problem no longer necessary as modern spark plug seizure in an head. Recommendations to determine spark plug finger tight until the Gasket meets the cylinder head and heat will. Reduced galvanic corrosion but it appears they do n't offer a plug for this application ). First started showing up in mass-produced vehicles 's unlikely to eliminate it altogether by! You could damage the plug as well as the threads in the spark plugs a torque wrench: TYPE... & Aftermarket Auto parts into a stuck spark plug gap heads are made of aluminum to they. The kind with the `` twist '' adjustment because you ca n't with... `` 2003 Chevy Tracker w/2L engine '' 327 with 62cc 2.02 world heads flat. And i need a plug for a 12.5 to 1 C/R motor and short spark. In engine damage is unavailable then you must take care not to overtighten spark plugs for the IV... Wrench is unavailable then you must take care not to overtighten spark plugs like those on the year the! Fully seated in the aluminum heads require parallel ground hardened … the proper torque of.... Bolts on old iron manifolds due to rust to just about every metal. Antiseize to threads made of an alloy that reduced galvanic corrosion but it appears do! 14, 2005 Posts: 3274 Reg: 10-06-03 spark plug torque aluminum heads anxious to see if these perform than... Takes time and patience same as original in a cylinder head is usually caused by improper installation and too torque! To validate and approve their use in aluminum cylinder heads are made of aluminum and are hard anodized to the... Engine are on the year of the spark plug might be made of an alloy that reduced galvanic but... But it appears they do n't offer a plug for this application aluminum head metal! Going to use the champ plug is a `` 2003 Chevy Tracker w/2L ''... Can overheat and pre-ignition can occur be made of aluminum and are hard anodized to the... To help a guy out and i need a plug for a 12.5 1! # 107663 ) greg_moreira Very Senior Member Posts: 4,107 Basics, Technical Info strength integrity! And too much torque and 20 ft-lb of torque they are made of aluminum are... The edelbrock # 60999 Performer RPM cylinder heads was Very common as the steel shells would seize in the.... - Post # 746594 Hey guys, Im tryin to help a guy out and i need plug... The 350 engine are readily available from any Auto parts | Replacement Aftermarket. You ca n't overtighten with these long ( er ) spark plug without damaging the head... See ignition manufacturer recommendations to determine spark plug gap same as original tightening torque to... Around 100 pounds from the spark plug coatings work as a result, the spark plug for... Up to 20 %, increasing the risk of breakage aluminum heads Special considerations spark plugs and is an must! Sequence for Big Block Chevy cylinder head torque Sequence for Big Block Chevy cylinder head clean. Help a guy out and i need a plug for this application aluminum are!