84 intake and 1. Intake Manifolds. this kit includes both 1" and 1 1/4" stand bolts. DART ALUMINUM Big Block - Technical Notes Standard BBC head studs or bolts may be used. Oval port intake. These heads are 100% CNC ported and utilize features such as raised, oval-shaped intake ports that flow an amazing 469 cfm and up and newly designed exhaust ports that flow 320 cfm with only a 1. Chevy Small-Block V-8. All heads are 100% CNC ported including the chamber and features a 5 angle valve job with. 119cc COMBUSTION CHAMBERSThis sale is for a set of heads (2 heads). 00 inches long (from valve head to plenum). big block GM style proseries stroker crate engine - longblock. I think I blew a head gasket this weekend due to the heads not being torqued down correctly. I then looked at my torque wrench (Craftsman) the numbers start at 20 pound feet. - '180degree' design using a small Holley 390 4-bbl carburetor. specifications for y-block aluminum cylinderheads. I am replacing the 76 cc chamber 882 casting heads on my 1968 Camaro with a set of iron vortecs …. Cast Iron with 4-bolt Main Caps. 030620-2 - World Products - Merlin 24 Degree BBC Iron Head - 320cc Intake Port, 119cc Chamber, 2. I redo heads, rims, intakes and even the aluminum water pump in the car. The cylinder head studs with part no. BBC Head Casting Numbers. The best engine combination is when the sweet spots of all the components (camshaft, cylinder heads, intake manifold, carburetor size, compression ratio, headers and exhaust size) are in the same RPM range. Intake manifolds, camshaft kits, cylinder heads and carburetors are the core of the Power Package. Independent flow bench testing shows over 400 cfm with 2. Because there has not been a lot of information published on the L88 engines over the years, it was difficult to take the bits and pieces we had from various sources and compile them into an easy to follow summary. The PowerPort heads shared the large (122cc. Main Bearings 110 ft. The aluminum, but otherwise stock 4-bolt block accepts all standard accessories such as the starter, oil filter, motor mounts, water pump, mechanical fuel pump, timing cover and alternator mount. Install all 12 bolts and washers and torque to 10 lb-ft. Late Bowtie, Dart Merlin, iron and aluminum Dart 360, Edelbrock, Dart Pro 1 (mfg before 1/1/15, use 235-4118 after 1/1/15), AFR, Profiler 24° 1. The above motors all had the intake valves pretty well shrouded by the cylinder and due to combustion chamber shape. Rocker Arms. 3) Apply Edelbrock Gasgacinch sealant PN 9300 to both cylinder head flanges and to the cylinder head side of the gaskets, allow to air dry, and attach the intake gaskets. E'Brock specs 25#-ft for the RPM intake, I always presumed this was because the bolts were threaded into their alum heads, they don't use inserts for the intake bolts. They feature partially CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Big Block Chevy square port heads. Thanks Also anyone know the torque specs on the bolts for the accessory brackets with aluminum heads?. We recommend using ARP Ultra-Torque lube to ensure an even, accurate clamp load and to prevent thread galling. PERFORMER RPM 454-R ALUMINUM CYLINDER HEADS for Big-block Chevrolet V8s CATALOG #6054* (bare) and #6055* (complete) GENERAL INSTRUCTIONS • PLEASE study these instructions carefully before installing your new cylinder heads. No sleeves. We have built C. The Maxx 317 is truly a rare breed in today’s market. after it has cooled from running). The roof height can be at least partially evaluated by the intake valve length. Aluminum Cylinder Heads, PAIR 356-A Aluminum Alloy Heat treated to T-6 Specifications. Technical Question about re-torquing cylinder heads. I hate flowbenches. You need to follow the instructions that came with the bolts. 250” intake valves and 1. Combustion chambers are engineered for optimum swirl and quench right out of box. Hot Topic: Iron vs. BBC ProComp Aluminum Cylinder Heads 300 Runner Assembled - Item # PCM 3021-396C. The search feature is available on the Specifications Lookup page under the Technical Info heading of the main page. Where can I find a list of GM part numbers for the 8. Is there a tightening sequence on flathead intakes? And what should i torque my offy intake down to? i've found the head sequence but could'nt find the intake sequence. Manufacturer of fasteners found in engines and drivelines, ranging from OEM replacement parts to specialty hardware for racing applications. 88" stainless steel exhaust valves. BRODIX 8B2000A ALUMINUM BBC BLOCK Brodix << Back E-Mail A Friend. The cork gaskets are the one's that are on there currently, haven't replaced them yet but they've degraded. The L76—like its LS2 sibling—is a 6. Patriot’s BBC heads come as cast with a 320cc intake runner, US made bronze guides, and a 5 angle valve job. Combine those heads with an aluminum Edelbrock Performer intake and a set of headers, and you'll be looking at an axis-of-the-Earth-shifting, 540 cubic inch big block that actually weighs. This part number is ideal if you're looking for a high performance big block longblock on a budget. 1959-75 Chevrolet engine torque value charts give you the correct bolt tightening requirements to prevent damage. Year Engine VIN Engine Displacement Liters Cylinder Head Bolts Main Bearing Bolts Rod Bearing Bolts Crankshaft Damper Bolts. Introduction. Over 30 years of racing experience and cylinder head and manifold development for Indy race cars. copo yenko baldwin motion zl1 396 427 454 l88 l71 l72 ls6 zl1 3856208 3855962 l78 l89 4 bolt 3904351 3873858 3916321 3916323 3869942 3904390 3904391 3955272 3963512 3866963 3885069 3886093 3935439 3935440 7115 6223 3872702 3904390 3904392 3964291 3946074 3919840 3894382. 88 intake ports. Keith Dorton Series Intake Manifold 1957-1986 262ci-400ci, 1987-later with Aluminum Heads. WE DEAL WITH ALL MAKE AND MODEL CYLINDER HEADS. Late Bowtie, Dart Merlin, iron and aluminum Dart 360, Edelbrock, Dart Pro 1 (mfg before 1/1/15, use 235-4118 after 1/1/15), AFR, Profiler 24° 1. ARP recommends using the proper torque sequence, but to torque the bolts (with washers) to 65 ft lbs using their assembly lube. A continuation of the industry leading V8 engines from GM Powertrain, the LS3 kicks out 430 horsepower and 424 lb. In sequence, torque all bolts. - equal length intake runners. 6L 90° V-8, Cast Iron Block with Aluminum Heads. This is a discussion on Torque specs for LS1 motors within the General Help forums, part of the LSx Technical Help Section category;. On paper, the specs on the BBC heads supplied for the test certainly looked impressive. BluePrint Engines 632 c. Flat Tappet Heads; Torque Converters Edelbrock 7562 Performer RPM Air Gap Intake Manifold BBC Chevy Rect Port #7562. There are numbers for adjusting valve gaps: 0. (1) head only, no other parts included. Because there has not been a lot of information published on the L88 engines over the years, it was difficult to take the bits and pieces we had from various sources and compile them into an easy to follow summary. For marketing purposes, it was also known as the Vortec 5300. Mistake 12: Improper Use of Torque Wrench. 3881 ** dart big 'm' splayed main block bored 4. 0055 strech head. completely redesigned ports and chamber. Same with me, I torqued my studs in my aluminum heads to 50ft-lbs. The power portion of building a 22R/RE is concentrated in the aluminum cylinder head. Combine those heads with an aluminum Edelbrock Performer intake and a set of headers, and you'll be looking at an axis-of-the-Earth-shifting, 540 cubic inch big block that actually weighs. Dart BBC Pro1 335/355 CNC Cylinder Heads. Victor 454-R BBC Intake Manifold For Standard Deck BBC, Non-EGR, 3500-8500 RPM Part #2907 INSTALLATION INSTRUCTIONS PLEASE study these instructions carefully before installing your new intake manifold. During the first stroke (called the intake stroke) air from the intake manifold is sucked into each cylinder through a valve or valves. Because there has not been a lot of information published on the L88 engines over the years, it was difficult to take the bits and pieces we had from various sources and compile them into an easy to follow summary. Tighten until you get to the needed. A beefy build for all you street machine enthusiasts that believe bigger is better! 632 cubic inches built to deliver incredible race engine performance and still be reliable on pump gas. Anyone know the torque specs for putting this whole thing back together?. Keep in mind this will change depending on the material used– cast iron vs. Aluminum heads are lighter than cast iron, saving maybe 25 to 30 lbs. EZ Read simple diagram of the Small Block Ford Intake Mainfold Torque Sequence Small Block Ford Intake Torque Sequence So we got that 5-OH up an running and swapping out that POS Autolite 2bbl carb. I just had to tear mine down due to a blown intake manifold gasket on the water port located above #1 Piston. Dart has accomplished this in every intake manifold we make. When you’re ready to really step it up, it’s time for the GM Performance Parts ZZ572 and it’s massive 620 horsepower and 650 lb. Shown here are just a very few of the many cylinder heads and packages that we offer. Search Car Torque Specifications by Engine or Model. Personally I prefer studs for all my manifold installations on aluminum heads. or if the head and/or the whole engine is aluminum?? bolt torque on what was accessible such as intake. The torque spec can be anywhere from 25-35 on Iron heads, but for aluminum I tend to go towards the lower side. The heads have about 100 runs on them but are real clean and have never been repaired or damaged. Buick Nailhead, Engine Specifications and Blueprinting. Torque the head studs in the four stages shown, following the sequence shown in Figure 1. 25 Years, Made in America!. Here you will find all of the recommended clearances and torque specs needed for building most Cadillac 472, 500, 425, and 368 engines. Torque Specs and Service Information Revisited. 1L engine? Our aluminum cylinder head, camshaft and modified intake manifold top end kits are a great place to start. 360cc Intake runner and 119cc combustion chamber. 88" stainless steel exhaust valves. Patriot’s BBC heads come as cast with a 320cc intake runner, US made bronze guides, and a 5 angle valve job. Includes 30 month / 50,000 warranty & BPE Dyno Promise. Though ProMaxx offered both smaller, as-cast and larger CNC-ported heads featuring 370cc intake runners, we opted for the middle of the three available heads. Raylar Big Power CNC aluminum cylinder heads are engineered to maximize the horsepower and torque of the big block Chevrolet Vortec 8100 8. I am trying to guesstimate what kind of power and torque increases I would gain. 242 thread locker or equivalent to the intake manifold bolt threads and torque down to 11 ft. More Big Block Chevy Power With Trick Flow BBC R-Series Heads. Cam Duration Degrees Optimum Intake runner area 0. 5 ntake manifold torque sequence DOHC engines-4. Gamble points to the weight savings of aluminum as a big reason aluminum heads have become so popular. Aluminum heads are cleaner, easier to port and they look trick next to an iron head. STREET ENGINE BBC 632 cu. 540" (Gen V, VI) • Use head bolt kit P/N 12367779. In sequence, torque all bolts. 9 dohc cylinder head torque specs and sequence Cylinder head bolt tightening procedure: CYLINDER HEAD BOLT TIGHTENING SEQUENCE: INTAKE SIDE 8 4 1 5 9 7 3 2 6 10 EXHAUST SIDE In sequence, torque the cylinder head bolts. manifolds What is the torque spec and the torque sequence for chevy vortec intake manifolds. Use the manufacturer's torque sequence but do not use the engine manufacturer's torque specs. The Raylar Cool Gap aluminum intake manifold for the 7th generation big block chevy is engineered to maximize the horsepower and torque levels of the 496 / 8. What are the torque specs and sequence for the intake and head gasket on a 1999 Chevy Silverado 6. I was thumbing through the paperwork that came with my intake manifold and it suggests 15-18 pound feet of torque for my manifold. With peak intake flow numbers of 384 cfm, the heads we capable of supporting over 750 hp, but on our 496 manage 691 hp and 603 lb-ft of torque. Pro Comp Aluminum Cylinder Heads are a great choice for an out of the box horse power upgrade for your Small Block Ford. ProMAXX Performance has designed a complete new line of performance heads that meet or exceed the big names in the industry. 85" exhaust valve. Find CHEVROLET 6. If you have '86 or earlier heads, or most aftermarket heads, you. 5L/396 Cylinder Heads with Aluminum Cylinder Head Material and get Free Shipping on Orders Over $99 at Summit Racing!. 4, aluminum small block engine used in GM trucks and SUVs between 2007-2011. The power portion of building a 22R/RE is concentrated in the aluminum cylinder head. Notes on Airflow. BBC Head Casting Numbers. this kit includes both 1" and 1 1/4" stand bolts. BES Racing Engines - BES / BBC Brodix Head Hunters. with the cam on its base circle for the cylinder you are using (opposite from full lift), install the intake and exhaust rockers in position with the correct length. Most installations can be accomplished with common tools and procedures. Where can I find a list of GM part numbers for the 8. Many pistons require a tighter bore). ‘There’s something about big-block Chevys that demands big cylinder heads. 87mm from the Silverado. The car is 3,425lbs. RHS is the leading developer of high performance cylinder heads, engine blocks, intake manifolds and related components for street performance and race engines Racing Head Service (RHS) JavaScript seems to be disabled in your browser. Edelbrock Victor Series aluminium ported intake. Flow measured at 28" of depression. Closed-chamber cylinder heads have small combustion chamber volumes for high compression ratios, with even mildly domed pistons. All Aluminum Block with Eagle 4. Anyone know the torque specs for putting this whole thing back together?. Because there has not been a lot of information published on the L88 engines over the years, it was difficult to take the bits and pieces we had from various sources and compile them into an easy to follow summary. 1/4″ registers position the cast iron sleeves. Torque Specs and Service Information Revisited. Naturally Aspirated build putting over 600 RWHP to the ground. 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 wordsafter it has cooled from running). Other lubrications offer reduced friction and increased bolt tension, and will affect the torque figure. The high-velocity flow capabilities of Edelbrock Performer RPM cylinder heads provide increased torque across a wide rpm range that's ideal for marine use. Mains are aligned honed and block is machined on CNC Mill for stroker crank. What is the bolt tightening sequence and torque specs for small chevy v8 with aluminum intake and stock heads? Follow. Cast iron used to be the material of choice for cylinder heads. Join BES customers in the Winner's circle. Though ProMaxx offered both smaller, as-cast and larger CNC-ported heads featuring 370cc intake runners, we opted for the middle of the three available heads. I'd be more concerned (if running a racy solid roller cam) about pulling the threads at a rocker stud than an intake or header bolt. This does not include specs for LSX or Aluminum blocks which may be different, again check with the manufacturer on those. This engine requires aluminum heads and the second generation vortec intake with an adapter for the throttle body modification. Using a standard lbs-ft torque wrench, start at the center of the intake and work your to each end in a cross pattern. Same with me, I torqued my studs in my aluminum heads to 50ft-lbs. The torque spec can be anywhere from 25-35 on Iron heads, but for aluminum I tend to go towards the lower side. General Specifications for the 198 and 225 Cubic Inch V-6. LS Engine Torque Specs Discussion in Position Sensor Bolt 18 lb ft Cylinder Head Bracket-to-Valve Rocker Arm Cover Bolts 106 lb in Intake. The Sniper X uses standard BBC parts including available Jesel and T&D shaft rockers or you can use standard stud mounted rockers. Find CHEVROLET 6. Just snug up hand tight with a wrench only. To Order or for More Information CALL TOLL FREE! Intake Valve Dia: 2. Why buy a set of heads with the wrong parts when we can build you a custom ported set of heads complete, ready to bolt on with the right parts. Chevrolet with high torque starter, SS, hex. 0055 strech head. T2 is the actual torque applied to the nut. Intake Manifold Torque Sequence. completely redesigned ports and chamber. The rocker studs that come with them need 30 foot-pounds of torque with oil and 20 foot-pounds of torque with ARP lube. Traditional Chevy Orange and Aluminum were used. Yes i have heard plenty of bad things about thier products, and many things about thier sbc heads, but i never heard any bad or good about the bbc heads. Some or all bolts/studs are often a different length than the bolts used on the stock cast iron head. Weiand 7513 BBC Big Block Chevy 396 402 427 454 Rectangle Port Aluminum Intake Intake is aluminum with black powder coating. [A] Torque values are based on 75% of the fastener yield strength. Torque specs on an aluminum edelbrock intake for a 350 chevy moter? Im installing a edelbrock perfomer/rpm intake on my chevy 350 small block and need to know the recommended torque settings. Intake Manifold (Cast Iron Heads). The cam profile that worked best was to tight lsh the intakes to add some intake timing. Block Bored and honed with torque plate 1 Pc seal design Premium core max. bbc 454 496 alum heads 118cc chamber 330cc runner hyd. Trick Flow products perform as advertised and exceed customer's expectations for performance and value. Bear Block Motors (BBM) is proud to introduce the incredible new BBM FE cylinder head for 390, 427, and 428 big-blocks with 2. Small Block Chevy Vortec Intake. Click on the link below and get the pulling power you’ve always wanted from your big block Chevrolet. Some or all bolts/studs are often a different length than the bolts used on the stock cast iron head. Casting Number. Cylinder Head Bolt Torque. An example of an engine ID for 1969 might be T0101LO. Cylinder Head. The torque requirements of the head bolts and the lower intake manifold bolts are specified in the manual, and should be followed, since the head is aluminum and thus a little vulnerable to damage. 900" bore spacing. Search Car Torque Specifications by Engine or Model. Early Hemi Crankshaft Casting Numbers & Specifications, Chrysler, Dodge & DeSoto Early Hemi Torque Specifications Chrysler, Dodge & DeSoto Hemi Engine Data for 1950's by Leo Lindquist, Chrysler, Dodge & DeSoto Early Hemi Photos, , Chrysler, Dodge & DeSoto Early Chrysler Hemi Links. Naturally Aspirated build putting over 600 RWHP to the ground. Over 30 years of racing experience and cylinder head and manifold development for Indy race cars. Click Header to Sort. In the aluminum category, AFR has 265-, 290-, 300-, and 305-cc port heads. Cylinder head bolts 140 ft. The engine doesn't have hydraulic lifters. Cylinder head. While the short-block stayed the same, Prestige tested three different aluminum cylinder heads from Brodix, five different intake manifolds, two different camshafts, and several other ideas during. 385cc Aluminum BBC Cylinder Heads; these contain all the specs for your heads We recommend a minimum depth of. For instance, torque specifications are necessary when performing cylinder head installations. T2 is the actual torque applied to the nut. 6L 90° V-8, Cast Iron Block with Aluminum Heads. How do the 1st two body styles of the Riviera compare - numbers-wise? Well, as you can see, the Riviera grew steadily as the body styles changed. Typically, the intake manifold is constructed from aluminum or cast iron. Outfitted with the right combination of hardware, a big block Chevy has the potential to make silly amounts of power—the kind that pulls up stumps, shreds tires, and turns ring gears into scrap iron. - equal length intake runners. The aluminum, but otherwise stock 4-bolt block accepts all standard accessories such as the starter, oil filter, motor mounts, water pump, mechanical fuel pump, timing cover and alternator mount. Shown here are just a very few of the many cylinder heads and packages that we offer. Is there a tightening sequence on flathead intakes? And what should i torque my offy intake down to? i've found the head sequence but could'nt find the intake sequence. [6] Screw the rocker arm studs into the cylinder head and tighten them hand tight. What would be the correct torque specs for dart pro 1 cylinder heads on a big block chevrolet with head studs? - Answered by a verified Chevy Mechanic. Failure to do so may result in head warpage. Includes composite intake gasket, exhaust gasket, DMR-5538 valve cover gaskets, front cover gasket, fuel pump gasket, water pump gasket, thermostat gasket, DMR-5496 oil pan gasket set, neoprene rear main seal, Fel-Pro Perma-Torque head gaskets and front cover seal. My favorite combo here is the 325 with a 2. Just snug up hand tight with a wrench only. Norris stainless rockers are very durable, but are a little heavy. They say to use ARP moly, no other moly, and to torque to 65 ft lbs, but with alum heads, to torque to 60. 6L engine torque spec chart!. Then, using the same torque sequence, tighten all 12 bolts to 18 lb-ft for aluminum heads. Pro Comp Aluminum Cylinder Heads are a great choice for an out of the box horse power upgrade for your Big Block Chevy. These heads are a permanent mold type of head and we have no knowledge of their quality control relative to things such as gas pockets (porosity) and core shift. [email protected] [email protected] Model 221 3. Check out how we install Kaase P-51 heads on a 557-inch stroker to make big, reliable street/strip power. There is just no reason not to unless you use stretch head bolts. 00B Street Wedge 383 Block 475 [email protected] RPM, 500 [email protected] RPM Part # 383 -C6 450 475 500” B Street Wedge 400 Block 600 [email protected] RPM, 615 [email protected] RPM Part # 400-C6-500-605 10,150. Torque specs for LS1 motors. How do the 1st two body styles of the Riviera compare - numbers-wise? Well, as you can see, the Riviera grew steadily as the body styles changed. using the factory specs for torque sequence. E'Brock specs 25#-ft for the RPM intake, I always presumed this was because the bolts were threaded into their alum heads, they don't use inserts for the intake bolts. Big Block Chevy V-8 Casting Numbers. bolt manufacturer's specifications. This caused MAJOR leak of Anti-Freeze into the "Valley of lifters" and consequently into my oil. SBC ProComp Aluminum Cylinder Heads 190 Runner Assembled - Item # PCM 3002C. Trick Flow Specialties is a leading designer and manufacturer of high performance cylinder heads, intake manifolds, and engine components. Dart says 70 ft-lbs. Valve Configuration. Condition is Used. Flow data based on Cylinder #1 intake and exhaust port. 72" exhaust valves. A lot of people will only torque the bolts to 35 ft. Part# 68000040 (cast Alum) & 68000060 (stamped steel) PORTING INFORMATION The intake and exhaust ports are very efficient on these heads “as cast”. 7/16ths diameter. Torque to Yield (TTY) Cylinder Head Bolt Size Other Specifications. 80-inch valves and a number of valve train options for moderate to high-lift roller camshafts. For marketing purposes, it was also known as the Vortec 5300. specifications for y-block aluminum cylinderheads. 0 torque Specs Engine Torque specs - Ford Mustang 1994-98. Pro Comp Aluminum Cylinder Heads are a great choice for an out of the box horse power upgrade for your Small Block Ford. 266° Intake / 274° Exhaust. 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. Engine Build: LSX Iron Block from Chevrolet Performance bored to 440 is 7. Spark plugs and all intake and exhaust bolts should be tightened with a standard wrench or socket versus a torque wrench as these smaller threads can easily strip. A really good set of stock ported heads can support over 700 horsepower (naturally aspirated), but aluminum heads will shed over 100 pounds from your engine. The engine doesn't have hydraulic lifters. 1L Vortec 8100 / 496 engine? Please refer to our illustrated part number sheet here. Save yourself a headache – use a high-quality torque wrench to tighten the head bolts in at least 3 steps. Dart developed the first successful aftermarket Aluminum heads for big blocks, and we’ve continued to improve and refine our revolutionary designs through our research and development. 119CC OPEN CHAMBER combustion chambers, 320CC intake runners. Ok so I finally got my canfield aluminum heads. Intake and Head bolt Torque specs for 502 MPI. The Raylar Cool Gap aluminum intake manifold for the 7th generation big block chevy is engineered to maximize the horsepower and torque levels of the 496 / 8. which is average for studs in aluminum. 4L-454ci-V8 Engine Torque Specs. RHS is the leading developer of high performance cylinder heads, engine blocks, intake manifolds and related components for street performance and race engines Racing Head Service (RHS) JavaScript seems to be disabled in your browser. I have edelbrock aluminum heads and i torqued my intake down to 30 ft lbs. They use similar internals, exhaust manifolds and oil pans. 2-liter LS3. HEAD BOLT TORQUE: All aluminum heads should be torqued to the. Part# 68000040 (cast Alum) & 68000060 (stamped steel) PORTING INFORMATION The intake and exhaust ports are very efficient on these heads “as cast”. Edelbrock Victor Series aluminium ported intake. DART ALUMINUM Big Block - Technical Notes Standard BBC head studs or bolts may be used. its a 1984-85 block. Maximum competition, high torque, high compression – low dome. See Dyno Chart. BRODIX 8B2000A ALUMINUM BBC BLOCK. The aluminum, but otherwise stock 4-bolt block accepts all standard accessories such as the starter, oil filter, motor mounts, water pump, mechanical fuel pump, timing cover and alternator mount. This single-plane manifold is ideal for 500+ cubic-inches or any big-block drag race engine with high air flow requirem. Get everything spotlessly clean and be sure to clean up all gasket debris from the lifter valley. There are several types of torque wrenches including a beam type, click type, digital, and dial type. BBC Head Casting Numbers. The heads have about 100 runs on them but are real clean and have never been repaired or damaged. Chevy High Performance used these to build their 675 hp 496. If you under-torque the intake bolts, this can cause coolant and vacuum leaks. The high-velocity flow capabilities of Edelbrock Performer RPM cylinder heads provide increased torque across a wide rpm range that's ideal for marine use. Ford 393 CI Windsor w/ Aluminum Heads 440HP 460FT/LBS TQ. There is an exact sequence, but, IMO this will do: Torque the 2 center fasteners (1 each side on an intake, 1 long & 1 short on a head) Go to next fastener set either fore or aft and torque those 2. Studs are the way to go. We install Crower push rods and rockers. the intake bolts. For marketing purposes, it was also known as the Vortec 5300. Click Here for Edelbrock Aluminum Head Installation Sheet PONTIAC HEAD CHART CASTING NUMBER YEAR FACTORY APPLICATION CHAMBER VOL# CC'S EXHAUST PORT NOTEWORTHY ATTRIBUTES 528511 1958 370 62 D-Port 1. TREperformance sells new AFR 265cc BBC Oval Port Magnum aluminum cylinder heads from Air Flow Research for almost any Chevy big block vehicle, these are the part number 3600. AJPE Billet Engine Blocks dominate many forms of racing, from Top Fuel & Funny Car, Blown Alky Pro Modified to Tractor Pulling, Drag Boats and more. Brodix 23° Ported Spec. The ’96 and later Vortec smallblocks use an aluminum base with a composite plastic upper intake manifold. SPECIAL NOTE: THE TORQUE VALUE USED ON THE FASTENERS FOR THESE BOSSES IS NOT TO EXCEED 35 LB. SBF ProComp Aluminum Cylinder Heads 190 Runner Assembled - Item # PCM 3037C. Over 30 years of racing experience and cylinder head and manifold development for Indy race cars. BES Racing Engines - BES / Edelbrock Victor 24° BBC Heads. Click on the link below and get the pulling power you’ve always wanted from your big block Chevrolet. 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 wordsafter it has cooled from running). Mike was sure that what kept him from achieving his high-torque, low-rpm goals, without resorting to boost, was the lack of a capable cylinder head. A pair of Profiler 290cc aluminum cylinder heads will take care of the intake and exhaust flow. To start i can buy a set of cast iron 049 cylinder heads ( $350) that have been ported and polished, flow benched, CC'd, the 049 has 112CC combustion chamber 255 Intake and 119 exhaust ports GM Performance oval port aluminum heads (12363392) have 110 CC combustion chambers 290 intake 110 exhaust. An engine's cylinder heads and intake manifold must work together as an integrated system to produce maximum performance. The best engine combination is when the sweet spots of all the components (camshaft, cylinder heads, intake manifold, carburetor size, compression ratio, headers and exhaust size) are in the same RPM range. (1) head only, no other parts included. I've heard a couple things Like you need to use special spark plugs, is that true? If it is what ones do I need to use? Also what should I torque the heads down at, at stock specs?. Rebuilding a 4. I believe he was using the FelPro aluminum backed gasket.