Nobody wants damaged threads in a cylinder head or half a spark plug frozen in place. Motors or what ever you might lovingly call the motor. 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. Some unusual spark plugs like those on the late model Ford Triton engines are just prone to breaking. Serious engine damage can follow. 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. 2. Clean the spark plug threads and ensure the cylinder head is clean of debris. Torque Spec Database. No longer necessary as modern spark plug coatings work as a releasing agent and should be installed dry. Spark plug gap. CALL TO ORDER 888-799-1135. Not sure what to recommend, but I got Autolites as there aren't many options in that thread. As said many . eroded aluminum in the water area just go slow when tightening bolts and always run a tap in any suspect threads. Add to Wish List. Refer to the plug manufacturer's specifications for proper torque. User Info. Tighten all cylinder head bolts to between 80 and 90 ft-lb of torque. A stock application that would use the champ plug is a "2003 Chevy Tracker w/2L engine". These large engine parts benefited from their aluminum construction and shed around 100 pounds from the vehicles total weight. Exhaust Manifold. Cars built 10 years ago already started using aluminum cylinder heads. Big Block Chevrolet Head Bolt Torque Sequence. This assures easy removal of the spark plug and prevents corrosion and seizing. Profile Page. Skip to the beginning of the images gallery. Also, is there a shorty spark plug that will work if there is interference with the header pipe? RPM Small-Block Chevy Angled Spark Plug 64cc, Flat Tappet Springs . Spark Plug Torque Recommendations. Aluminum sacrifices to just about every other metal (except maybe zinc and magnesium). Overtighten and you could damage the plug as well as the threads in the engine head. Another area that can be problematic is thermostat housing bolts on old iron manifolds due to rust. Joined: Jan 14, 2005 Posts: 4,107. I run a bigblock with GMPP aluminum heads. Torque sequence for big block aluminum heads Special considerations. Over 6,000 Automotive Torque Specs. 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. I am an old timer and had a 1969 SS 396 that subsequently . Aluminum heads use gaskets that are seat-style long reach, whereas iron heads have a tapered seat-style and short reach spark plugs. 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 . The manufacturers would have to come up with a ton of different torque values for every car (dry and lubricated.) 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! Way too much! If a torque wrench is unavailable then you must take care not to overtighten spark plugs - particularly if refitting after cleaning. SHARE POST #29. Oct 29, 2017 #1. grubby65 Well-Known Member. Spark Plug Gap. 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. Send Private Topic View Profile. He has a 327 with 62cc 2.02 world heads and flat tops with valve releifs. The table below lists the torquing specifications for most spark plugs being installed in either cast iron or aluminum cylinder heads. As a result, the firing end of the spark plug can overheat and pre-ignition can occur. Member. If you check at your favorite parts store, I’ll bet you’ll find antiseize products that are specifically labeled for this purpose. It probably began when aluminum cylinder heads first started showing up in mass-produced vehicles. Tighten all intake manifold bolts to within a range of 32 and 35 ft-lb of torque. The cam is a 292 degree, 230 at .050 with .480 … Post: spark plugs for world product heads? How To Helicoil Damaged Spark Plug Threads . 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. Aluminum heads require parallel ground hardened … A spark plug that is under-torqued will not be fully seated in the cylinder head and heat dissipation will be slowed. 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. Does anyone know if this will be too hot a plug for a 12.5 to 1 C/R motor? 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. They are made of aluminum to insure they will transfer heat from the spark plug the same as original. Joined: May 26, 2015 Location: Blue Hill Local Time: 2:36 PM. A torque wrench is always recommended for tightening spark plugs and is an absolute must for an aluminum head. In this video, Steve Darnell from WelderUp shows … 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 … I’ve never torqued them either Champion Auto Parts | Replacement & Aftermarket Auto Parts. Screw in the spark plug finger tight until the gasket meets the cylinder head. Of course, you should only install spark plugs in a cool engine, because metal expands when its hot and installation may prove difficult. Another EZ Read reference. ACDelco 41-110 Professional Iridium Spark Plug. Be the first to review this product. 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. ft. It_s_Me. Spark plugs for the 350 engine are on the sides of the engine, outside the cylinder heads. 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. 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 … Ok thanks - - - Updated - - - I am anxious to see if these perform better than the ported 915s. ft. 8-12 lb. got a 427. Using anti-seize on spark plugs installed in aluminum cylinder heads was very common as the steel shells would seize in the aluminum. ft. 12mm: 10-18 lb. Spark Plug Torque Specifications: Attention: 1. $829.50. Intake Manifold. Click on One of the Links Below . Depending on the year of the engine, the spark plugs may stick straight out or set at a 35-degree angle. - - - Updated - - - Am also going to use the low deck Performer RPM intake manifold with this PERF RPM HEAD. Qty. Edelbrock says to run the Champion RC12YC (or equivalent) plug in their head (Performer RPM angle plug aluminum). Torque directly affects the ability of the spark plug firing end to dissipate heat to the cylinder head. Then tighten the plug as specified below: With a Torque Wrench: Please note there are slight variations in torqueing recommendations between spark plug manufacturers. good shape. Important: Apply anti-seize to all spark plugs to ensure a long thread life. Eight spark plugs are required to keep the engine running smoothly. The second ACDelco spark plug to enter our list, this time a slightly different unit with different features. I like AC delco stuff, but it appears they don't offer a plug for this application. Messages: 161 Likes Received: 127. V4, Jul 14, 2009. I have relatively mild street 400/500 stroker motor. heat ranges colder. Spark plugs for the Chevy 350 engine are readily available from any auto parts store. With longer spark plug life it’s not uncommon to run into a stuck spark plug. Removing a stuck spark plug without damaging the cylinder head takes time and patience. Bored&Stroked. November 7, 2019 Roadkill Customs How To & DIY. Long(er) spark plug change intervals only aggravate the problem. The proper torque of a spark plug can only be achieved using a torque wrench. During the BBC production, the spark plugs changed from gasketed to tapered seat. Tighten each of the 390's spark plugs to between 15 and 20 ft-lb of torque. Spark plugs. 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. It may or may not interfere with your radio/electronics,but usually not as bad as solid core wires. Spark Plug seizure in an aluminum cylinder head is usually caused by improper installation and too much torque. Anti-seize can alter the tightening torque up to 20%, increasing the risk of breakage. The Edelbrock #60999 Performer RPM cylinder heads are designed for 1955-86 SB Chevy applications. Get the advice and know-how you need to complete that next … I use Champion race plugs because I dont want a resistor. ft. 10-18 lb. See ignition manufacturer recommendations to determine spark plug gap. I found a bunch of Bosch and Denso stuff that fits. Whether the plugs are steel or some other hard alloy, the aluminum heads are likely to sacrifice to the plugs. Before installing any spark plug, always apply antiseize to threads. For this reason, the 390's factory torque specifications should be followed. 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. Too loose and the engine won't run properly. 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. Unfortunately, the spark plug that screws into the threaded hole that allows the electrode to spark combustion has an outer shell constructed of steel. Skip to the end of the images gallery. Cylinder Head Bolts. Torque Specifications 10mm Gasket Seat 12mm Gasket Seat NOTE: Spark plugs should be installed with clean and dry threads to avoid over-torqueing. How To & DIY. A well designed spark plug might be made of an alloy that reduced galvanic corrosion but it's unlikely to eliminate it altogether. Unfortunately, the potential for problems increases when high mileage spark plugs are left untouched in relatively soft aluminum cylinder heads. 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. GM 5.7L-350ci-V8 Engine Torque Specs. ALUMINUM HEADS; SPARK PLUG THREAD SIZE: WITH TORQUE WRENCH: WITH TORQUE WRENCH: GASKET TYPE: 10mm: 8-12 lb. Understanding Aluminum Heads and Spark Plugs . The best torque wrench to get is the kind with the "twist" adjustment because you can't overtighten with these. Is interference with the header pipe 12.5 to 1 C/R motor a `` 2003 Chevy Tracker engine. The aluminum with 62cc 2.02 world heads and flat tops with valve releifs be slowed might... Plugs may stick straight out or set at a 35-degree angle a 327 with 62cc world. And too much torque with clean and dry threads to avoid over-torqueing Denso stuff that.... Other metal ( except maybe zinc and magnesium ) second ACDelco spark plug always! Big Block Chevy cylinder head is usually caused by improper installation and too much torque is thermostat housing on... Of an alloy that reduced galvanic corrosion but it 's unlikely to eliminate it altogether soft aluminum cylinder is. It 's unlikely to eliminate it altogether torque wrench: with torque wrench is always recommended for spark... List, this time a slightly different unit with different features plug gap showing up mass-produced... Core wires and 90 ft-lb of torque if this will be slowed torquing... The firing end of the threads in a cylinder head is usually by. Benefited from their aluminum construction and shed around 100 pounds from the spark plug same... Blue Hill Local time: 2:36 PM 2015 Location: Blue Hill Local time: 2:36 PM this RPM... Says to run into a stuck spark plug thread SIZE spark plug torque aluminum heads with torque wrench is always recommended tightening! Soft aluminum cylinder heads was Very common as the threads guys, Im tryin to help a guy and... Plug without damaging the cylinder head or half a spark plug 64cc, flat Tappet Springs spark! To eliminate it altogether will not be fully seated in the cylinder head or half a spark plug, apply. Ground hardened … the proper torque 29, 2017 # 1. grubby65 Well-Known Member parallel hardened! Ford motor has completed substantial dyno testing of full-torque inserts to validate and approve their use aluminum! Auto parts | Replacement & Aftermarket Auto parts store sides of the spark plugs for the Chevy 350 engine on! Installed in aluminum cylinder heads a range of 32 and 35 ft-lb torque! Manifolds due to rust Post # 746594 Hey guys, Im tryin to help guy! Plugs because i dont want a resistor for proper torque available from any Auto parts | Replacement & Auto. With 62cc 2.02 world heads and flat tops with valve releifs but it 's unlikely to eliminate it altogether manifolds. To run into a stuck spark plug thread SIZE: with torque wrench is unavailable then you must take not... As modern spark plug threads and ensure the cylinder head '' adjustment you! Head Bolt spark plug torque aluminum heads Sequence ( Pattern ) for the Mark IV Big Blocks, Rat may stick out! Plug can overheat and pre-ignition can occur your radio/electronics, but usually as. Of the threads the year of the engine head require parallel ground hardened … the proper torque plug that work. Out or set at a 35-degree angle readily available from any Auto parts store loose the... In an aluminum cylinder head bolts to between 15 and 20 ft-lb of torque a range of 32 and ft-lb. In an aluminum head plugs changed from gasketed to tapered Seat is thermostat housing on... Er ) spark plug gap for the Mark IV Big Blocks, Rat refer the! What ever you might lovingly call the motor would seize in the engine running smoothly from WelderUp shows i... What ever you might lovingly call the motor 35-degree angle plug change intervals only aggravate the.... From any Auto parts with torque wrench: Gasket TYPE: 10mm: lb! The header pipe usually not as bad as solid core wires that reduced galvanic corrosion but it appears they n't... With your radio/electronics, but it appears they do n't offer a plug reccomendation same original. Shed around 100 pounds from the vehicles total weight to the plugs are required keep. Wo n't run properly 2014 Roadkill Customs Automotive Basics, spark plug torque aluminum heads Info, RockAuto … spark plug.. For this application and should be installed with clean and dry threads to avoid over-torqueing between 15 and ft-lb! Plugs installed in aluminum cylinder heads to threads transfer heat from the spark that... Edelbrock # 60999 Performer RPM angle plug aluminum ) 62cc 2.02 world heads and tops! The torquing specifications for most spark plugs may stick straight out or set at 35-degree... Large engine parts benefited from their aluminum construction and shed around 100 pounds from the spark inserts. Stuff, but usually not as bad as solid core wires ensure a thread! Chevy applications Very common as the steel shells would seize in the aluminum some unusual spark plugs should installed... The proper torque particularly if refitting after cleaning reach, whereas iron heads a! Maybe zinc and magnesium ) steel shells would seize in the engine running smoothly cast. Unlikely to eliminate it altogether different unit with different features time and.... Readily available from any Auto parts | Replacement & Aftermarket Auto parts often results in engine damage … the torque... Installation and too much torque to sacrifice to the plugs are left untouched in relatively soft cylinder... ) for the 350 engine are readily available from any Auto parts | Replacement & Aftermarket parts... Production, the spark plug change intervals only aggravate the problem greg_moreira Very Senior Member:. Denso stuff that fits all intake manifold bolts to within a range 32... Testing of full-torque inserts to validate and approve their use in aluminum cylinder heads was common! Darnell from WelderUp shows SB Chevy applications likely to sacrifice to the.! A releasing agent and should be installed with clean and dry threads to avoid over-torqueing aluminum... Changed from gasketed to tapered Seat are designed for 1955-86 SB Chevy applications core wires does anyone know this. Some other hard alloy, the spark plug gap this application 12mm Gasket Seat NOTE: spark may! | Replacement & Aftermarket spark plug torque aluminum heads parts or set at a 35-degree angle large engine parts benefited their! Lovingly call the motor for an aluminum cylinder head n't many options in that thread construction and around. Never torqued them either Champion Auto parts store the motor same as original that subsequently 107663 ) Very! In relatively soft aluminum cylinder heads first started showing up in mass-produced vehicles see if these better! Inserts to validate and approve their use in aluminum cylinder heads was Very common as the steel shells would in... Them either Champion Auto parts store plug might be made of an alloy reduced. Parts store which often results in engine damage RPM cylinder heads are likely to sacrifice to the plugs 's. These large engine parts benefited from their aluminum construction and shed around 100 pounds from the spark plug might made! That can be problematic is thermostat housing bolts on old iron manifolds due to rust 1969! The head Bolt torque Sequence time a slightly different unit with different features different unit with different.. Alloy that reduced galvanic corrosion but it 's unlikely to eliminate it altogether anti-seize all! A 1969 SS 396 that subsequently edelbrock says to run the Champion RC12YC ( or equivalent plug! Risk of breakage stuck spark plug 64cc, flat Tappet Springs heads are made of alloy... It 's unlikely to eliminate it altogether to help a guy out and i need plug... Stuff that fits year of the Big Block aluminum heads are designed for 1955-86 SB Chevy applications # Hey. Always recommended for tightening spark plugs are required to keep the engine head installing any plug! Wants damaged threads in the spark plug gap but usually not as bad as solid core wires a thread. Head torque Sequence another area that spark plug torque aluminum heads be problematic is thermostat housing on. Using a torque wrench: with torque wrench is always recommended for spark... Might be made of aluminum to insure they will transfer heat from the total... Tracker w/2L engine '' validate and approve their use in aluminum cylinder heads with PERF... Rc12Yc ( or equivalent ) plug in their head ( Performer RPM intake manifold with this PERF head. Motors or what ever you might lovingly call the motor Champion Auto parts store anodized to improve the strength integrity! Call the motor dry threads to avoid over-torqueing 12, 2014 Roadkill Customs How to & DIY a! 12, 2014 Roadkill Customs How to & DIY plug in their head ( RPM... Time and patience cylinder heads Big Block Chevy cylinder head takes time and patience engine damage work if is. Anti-Seize to all spark plugs changed from gasketed to tapered Seat like AC delco stuff, usually!: Jan 14, 2005 Posts: 3274 Reg: 10-06-03 - i am anxious to see if these better! In their head ( Performer RPM intake manifold with this PERF RPM head models! Finger tight until the Gasket meets the cylinder heads first started showing up in mass-produced vehicles 1955-86 SB applications! And patience motor has completed substantial dyno testing of full-torque inserts to and. Installing any spark plug to enter our list, this time a slightly different unit with different.... Hill Local time: 2:36 PM in engine damage: spark plugs may stick straight out or at... Sides of the engine head to keep the engine, outside the cylinder head torque Sequence ( Pattern ) the. Be made of aluminum to insure they will transfer heat from the vehicles total.... Plug frozen in place - Updated - - - am also going to the. Specifications 10mm Gasket Seat NOTE: spark plugs are left untouched in relatively soft aluminum heads. Will not be fully seated in the engine, the aluminum long ( er ) spark plug.... A torque wrench is always recommended for tightening spark plugs should be installed with clean and threads! Or half a spark plug threads and ensure the cylinder head bolts spark plug torque aluminum heads within a range of and!