You will need the usual things for . Are they the same as regular torque specs for the heads on a SBC heads with bolts? Torque to 50-65-80 ft.-lbs., with 75 ft.lbs. Discussion Starter • #1 • May 26, 2004. This seems like WAY too much torque for an aluminum block. Chase if necessary with ARP Thread Chaser, part number 911-0004 (7/16-14). torque on the bottom. And of course re-torque after a full warm-up cycle. according to the thread profile you should compute the height(h)of the thread in the aluminum part at the outer bolt diameter. This Performance Cylinder Head is fully CNC ported for maximum horsepower and torque, making them ideal for high-performance street and light-duty racing applications. (Torque in 3 steps, gradually approaching final torque spec.) They also feature high-quality lightweight valve springs and heavy-duty hardware for maximum lift … GM 5.7L-350ci-V8 Engine Torque Specs. These are on my Chevelle that I do not drive much. Heads are not drilled for steam holes that are required on SBC 400 engines. Cylinder Head (oiled) 7/16"-14 60 ft. lbs. Small block chevy torque specifications for Main Caps, Connecting Rods, Heads, Cam Sprocket, Rocker Studs, Oil Pump, Timing Cover, Harmonic Damper, Valve Covers, Oil Pan, Exhaust Manifolds, Intake Manifold and Spark Plugs. Over 6,000 Automotive Torque Specs. I'm now going to install my manifold and then headers onto my (pro topline) aluminum heads. This is because of the different expansion rate of the aluminum … i bought these heads from speedmaster Chevy SBC 350 205cc 64cc Straight Hydr-FT Complete Aluminum Cylinder Heads - See more at: Chevy SBC 350 205cc 64cc Straight Hydr-FT Complete Aluminum Cylinder Heads they seem to be good 603 dollars im using them to bring my compression up but i need the torque specs for them could any of yall decipher the torque specs … The answer I finally found thru my local GM Performance Center (they even showed me the book) was 11 ft-lbs on the first pass then 18 ft-lbs on the second pass. By Jason Lubken. DO NOT use loctite on any of this style fastener. Machined and assembled in the USA. They say to use ARP moly, no other moly, and to torque to 65 ft lbs, but with alum heads, to torque to 60. Check cylinder bore concentricity and deburr bottom of sleeve for removal. Recommend head gasket for 4” bore engines is the Fel-Pro 1003 style gasket. Small-head header bolts are great for exhaust headers because you can usually get a socket on them to torque them down. For une turn the shear area will be A1=d*pi*h, the maximal shear force per turn will be 7/7/2016. The intake specs vary due to the differences between metals, such as aluminum intake to iron heads, or iron intake to aluminum heads. Install fastener hand tight. Torque Specs - Main Caps 1-4 7/16" studs 75 ft lbs w/ CMD # 3 high pressure lube ... Before honing sleeves or decking block you MUST install a torque plate using a head gasket with a steel wire. All aluminum cylinder heads with factory bolts should be torqued to 70-75 ft./lbs using Permatex thread sealant with Teflon. NOTE 1: The torque values represented here are intended to be for general information only, not for specific installations. Tags: Tech, Engine, Chevy, LS, SBC, Small Block Chevy, V8. Exh Manifold to Cyl Head (Center) 3/8"-16 25 ft. … or 70 with 30W but this does not say whether iron or aluminum heads. 2171 - ProMaxx Performance Small Block Chevy Aluminum Cylinder Heads is rated 2.0 out of 5 by 1. Regardless of the configuration, the 327's torque specifications are identical. The ARP bolts have instructions...that are confusing and contradictory. Figure 1 - SBC Cylinder Head Bolt Torque Sequence Torque Bolts to 65 ft./lbs. I am mounting them to a 383 stroker. AFR - Eliminator SBC High Performance Cylinder Heads. Aluminum rods are designed to be run with full flotation wrist pins ( we recommend .0008" to .0015"), but are subject to change based on personal preferences. I have Brodix (aluminum) Ik200's. A Little History. The kit number is not too important, the torque depends on the fastener strength. Torque Specs for Small Block Chevy Engines Part Bolt Size Minimum Maximum Camshaft Sprocket 5/16"-18 15 ft. lbs. ... eroded aluminum in the water area just go slow when tightening bolts and always run a tap in any suspect threads. TORQUE SPECIFICATION Some owners will re-check all flathead torque settings again after the first month of operation. The torque on this kit which uses the 190,000# fasteners is 70# with ARP's moly lube or 85# with 30wt oil. The 180cc, 190cc and 195cc models are CARB Certified EO #D-250-2 for vehicles model year 1994 and older.While our 210cc, 220cc, 227cc, 235cc, and 245cc SBC … What torque setting do I use for the studs into the block? E-CNC ™ CYLINDER HEADS For the ultimate in performance, our E-CNC cylinder heads are the answer. True to form, the iron lungs made excellent torque, generating over 400 lb-ft of torque for a 1,200-rpm power spread. Peak torque saw the Jegs head take top honors with 421 lb-ft of torque besting both the Dart and Patriot heads' 417 lb-ft achievement that … Edelbrock aluminum e-tec 200 heads fel pro gaskets ARP bolts What torque spec do I use? For nearly six decades now the small block Chevy engine has dominated the world of motorsports. Aluminum heads call for lower torque specs and it is recommended that the mechanic re-check the torque after the engine has run up to temp and then cooled (in other words….after it has cooled from running). Aftermarket aluminium heads have unique torque settings, so manufacturers' guides should be consulted. 70 ft. lbs. A minimum of .055" is recommended for total deck height (including head gasket). The head and gasket 'instructions' say nothing. the proper procedures and torque specs if they have specific values as many do. 4. All I can find are generic specs for the 5.3, which are 22 ft-lbs initial pass, then 90 degrees on the second pass, then another 70 degrees on the third pass. for 1/2" bolts or studs (351W) in three or four steps following the factory tightening sequence. ... SBC Head Torque Sequence; SBC Intake Torque Sequence; SBF Head Torque Sequence; Recommended torque is equal 75% of the fastener’s yield strength. It’s been the most sought-after V-8 engine among hot rodders and racing enthusiast since its debut in 1955. If you under-torque the intake bolts, this can cause coolant and vacuum leaks. Based on the smaller 283 engine, the 327 was manufactured in a variety of configurations to produce different power ratings. SBC Firing Order and Torque Specs. This will ... Dart Aluminum SBC Sleeve Installation and Removal Procedure 1.) SOURCE: head bolt torque specs and sequence for early 350 malibu motor There are two different torque specs for this engine depending on which bolts you are torquing. This is information that you can never find when you need it so here is a table for the ARP Head Studs, Main Studs, and Rod Bolts Torque Specifcations and Stretch Specs. Making great power at a price that cannot be matched. Dyno results show 20 to 35 hp gains over the competition. To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. If you over-tighten, the bolt threads can be severely damaged and you risk breaking a bolt off inside the head. This engine uses three different length bolts, the two sets of longer bolts can be torqued to 70 foot pounds, the short set of bolts that go along the bottom of the head should be torqued to 65 foot pounds. Search Car Torque Specifications by Engine or Model. Connecting Rod 3/8"-24 30 ft. lbs. The “right” cylinder head on an engine will deliver […] 4. Chevrolet first introduced the 327 small-block engine in 1962. Chevy Small-Block Firing Order and Torque Sequences - Covers Engines: 262, 265, 267, 283, 302, 305, 327, 350, and 400-ci Apply ARP Ultra-Torque ® to fastener threads and the underhead of the bolt or underside of the nut. - mechanical values of the aluminum as yield limit (Re) and friction coefficients for the bolt head against the surfaces it clamps. A cylinder head is much more than a casting that tops off the block, holds the valves and forms the combustion chambers. Re: SBC ARP Head Studs - Torque? The torque specifications for Chevrolet 350 cubic inch V8 head bolts are 65 foot-pounds per bolt if securing the stock cast iron head. I'm looking for the correct torque specifications for the heads on the aluminum block L33. Use torque wrench to install fastener to the torque value from the chart below. Use Permatex 80631 style sealant on the threads. The head works in combination with the camshaft, induction and exhaust systems to determine how the engine breathes, the engine’s power curve and personality. On aluminum heads you can back the numbers down to 65# with the moly lube or 80# with the oil. 5. Head bolts such as 50542171 and washers 50542102 are recommended. 3. 3. I am using arp studs. Torque Spec Database. 25 ft. lbs. head bolt torque: Apply moly-oil mixture to washers, and area around head bolt to prevent galling and improper torque readings. Rated 2 out of 5 by Taylor0144 from Bad quality I bought the heads a month ago and installed them. For the SR20, which has an aluminum block and head, you need to use 65 lb-ft as the torque spec. HC 410 Blocks; HC 400 Blocks; 350/400 Blocks † Intake Manifold:Although stock Vortec intake manifold will fit, Edelbrock E-Tec 170 Cylinder Heads are matched in size and operating range with Edelbrock Performer, Performer RPM, and Listed here are the general torque recommendations for most ARP fasteners. I've read the torque specs that came with my ARP Rocker arm studs and they say 55 with thread sealant (is that like thread locker?) 35 ft. lbs. Our ELIMINATOR line of SBC heads feature 100% 5-AXIS CNC ported intake, exhaust and combustion chambers; available in street and competition version. Donovan Big Block Info. Aluminum rods require additional "deck" clearance. Be sure to follow the proper GM torque sequence, starting at 40 ft./lbs and increasing by 10ft./lbs until reaching the recommended setting. RC 600 Raised Cam Big Block; D500 Big Block; Donovan Small Block Info. And the nuts to the studs? Menu. Torque to 70 ft/lbs. If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP THREAD SEALER. I really don't feel like stipping out my brand new heads with 70ft lbs of torque. Post by bigjoe1 » Wed Jun 16, 2010 7:49 pm Anything over 70 pounds will be VERY risky on a stock block-- I wound NEVER go above 70 on a stock block ( ask me how I know ) Gm called for 65 pounds for one hundred years so who are you gfoing to listen to for 7/16" bolts or studs (289 or 302) or 100 ft/lbs. Engine Blocks. 413 Posts . We set the total ignition timing at 36 degrees. Simply re The 185cc series 1 heads are perfect for that budget build. I was also wondering about header studs vs header bolts.