Sbc intake torque specs aluminum heads

These aluminum 327 Chevy heads match the original design that came out on the 1961 Corvette Fuelie, but instead of heavy cast iron, these are made from aluminum, shaving 40 pounds of unnecessary weight. They feature 180cc intake and 62cc exhaust ports, same as the original 461s, flowing an impressive 232 cfm at .500” lift on …

Sbc intake torque specs aluminum heads. HEAD BOLTS or STUDS: High quality head studs or head bolts with hardened washers must be used to prevent galling of the aluminum bolt bosses. Edelbrock Head Bolt Kit #8555 includes two longer-than-stock bolts which must be used with these cylinder heads. If you use any other head bolts, you must use the two head bolts and washers supplied

HEAD BOLT TORQUE: Apply moly-oil mixture to washers, and area around head bolt to prevent galling and improper torque readings. Torque to 70 ft/lbs. for 7/16" bolts or studs (289 or 302) or 100 ft/lbs. for 1/2" bolts or studs (351W) in three or four steps following the factory tightening sequence.

Sep 15, 2010 · bcm66. 4762 posts · Joined 2006. #7 · Sep 15, 2010. I have never used a torque wrench on aluminum intake bolts. Always went with the old timer rule of "get 'em tight - but not too tight". Then check them again after the engine has gone through a couple of heat cycles. 1968 Camaro SS 396 coupe L78 - now old school 468 big block. On the plus side, the Vortec intake port flows 42 cfm better than the stock heads at 0.500-inch lift and 18 cfm better on the exhaust side. Vortec Iron, Scoggin-Dickey Modified PN SD8060A2, $779. ...2 – 1/2-14 NPT Pipe Plugs. 1 – 3/8-18 NPT Pipe Plug. DESCRIPTION: The Edelbrock RPM Air-Gap #7116 intake manifold has been designed for 262-400 c.i.d. small-block Chevy engines equipped with Vortec style (L31) cylinder heads. The manifold accepts late model water neck, air conditioning, alternator and H.E.I. ignition systems.Maxx 200 SBC(Sold in Pairs) Maxx 200 SBC. (Sold in Pairs) $ 950.00 – $ 1,525.00. The Maxx 200 is the ultimate “as cast” head available that produces CNC type flow number, flowing over 280cfm. This head has produced over 550 hp on pump gas and mild cam .383. Spring Options.Our line of intakes have worked very well with the Felpro 1206 intake gaskets. Head Gasket: Felpro# 1003 or our line of GR-30 and GR-40 heads gaskets. ... Our Gold Series Stud Girdles work very well on these heads. Torque: Head Bolts = 65 ft/lb Rocker Studs = 55 ft/lb Manifold = 30 ft/lb Block Use: Any SBC Iron or Aluminum Weight: 59-61 lbs ...You might still say "tin foil," but chances are you're using aluminum. We recently posted about the many ways aluminum foil is helpful around the house and quickly found that menti...

Our line of intakes have worked very well with the Felpro 1206 intake gaskets. Head Gasket: Felpro# 1003 or our line of GR-30 and GR-40 heads gaskets. ... Our Gold Series Stud Girdles work very well on these heads. Torque: Head Bolts = 65 ft/lb Rocker Studs = 55 ft/lb Manifold = 30 ft/lb Block Use: Any SBC Iron or Aluminum Weight: 59-61 lbs ...May 26, 2004 · 413 posts · Joined 2001. #1 · May 26, 2004. I'm now going to install my manifold and then headers onto my (pro topline) aluminum heads. I'm using ARP bolts for the manifold, and ARP studs for the headers. ARP says 39ft lbs, but I once stripped out a thread (P.I.T.A.) at 30ft lbs, so im definately wary of doing that again. The torque specifications for Chevrolet 350 cubic inch V8 head bolts are 65 foot-pounds per bolt if securing the stock cast iron head. Aftermarket aluminium heads have unique torqu...Do you know how to remove your car's intake manifold? Find out how to remove your car's intake manifold in this article from HowStuffWorks. Advertisement Repairing your car may see...The LQ4 is a 6.0L LS (Gen. 3) small block engine used in GM trucks between 1999 and 2007. For marketing purposes, it was also known as the Vortec 6000. The engine specs and information listed here is for the stock LQ4 engine. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family ...My aluminum Edelbrock E-Streets called out 40-55-65 ft. lbs. in three steps....aluminum Edelbrock intake manifolds 25 ft. lbs. Vortec intakes only 11 ft. lbs. Headers about 35-45 ft.lbs. Really as tight as you can... they will loosen. Use anti-seize on bolts going in to aluminum. (intake and header)These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure. If you use aftermarket performance bolts like ARP's, you should follow the recommended torque specifications.Valve sizes are 2.250/1.880 inches. The current “bad-boy” Bowtie race head is PN 12363425 (casting number 14044861), a bare head with 380-cc intakes and valve seats for 2.19/1.88-inch valves. Exhaust port exits are raised 3/4 inch and feature a distinctive vane, giving rise to the popular nickname of the “W” port head.

Apply oil or suitable thread lubricant to head bolt threads and under side of bolt heads and washers. Torque to 95 ft./lbs. in three steps (45-65-95) following the factory tightening …Our line of intakes have worked very well with the Felpro 1206 intake gaskets. Head Gasket: Felpro# 1003 or our line of GR-30 and GR-40 heads gaskets. ... Our Gold Series Stud Girdles work very well on these heads. Torque: Head Bolts = 65 ft/lb Rocker Studs = 55 ft/lb Manifold = 30 ft/lb Block Use: Any SBC Iron or Aluminum Weight: 59-61 lbs ...25 Jul 2013 ... Re-torque cylinder head ... Engine Building Part 12 - Installing an Edelbrock Performer Dual Plane Intake Manifold SBC 350 ... 5.3 Head Install and ...in the cylinder head. Torque all of the manifold bolts in two steps by the sequence shown in Figure 2to 25 ft/lbs. 5b. Install the intake manifold and hold-down bolts. On applications with Vortec or E-Tec cylinder heads, torque all of the manifo ld bolts in two steps by the sequence shown in Figure 3to 11 ft/lbs † PREP AND TUNING FOR POWER:The torque specifications for Chevrolet 350 cubic inch V8 head bolts are 65 foot-pounds per bolt if securing the stock cast iron head. Aftermarket aluminium heads have unique torqu...

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summitracing.comThis aluminum head from Trick Flow produced 496 lb-ft of torque at 4,000 rpm and 455 horses at 5,300 rpm. With its 195cc intake ports and 215-cfm flow numbers at 0.400-inch lift it ...When it comes to engines, torque is a crucial specification that determines the power and performance of the machine. In the world of small engines, Kohler is a well-known and resp...Torque specs. 04-30-2013, 05:23 PM. I have a 351W with the performer RPM heads and Pro-Flo Intake. I need to re-torque the heads but don't have the specs for sequence or ft pounds, and since the heads are aluminum, do I need to use stretch head bolts if I replace them? Any help would be appreciated, Thanks!We've all been told not to put aluminum foil in the microwave. Stories of incredible explosions and fires are usually at the center of these ominous warnings. Why is that? Advertis...These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure. If you use aftermarket performance bolts like ARP's, you should follow the recommended torque specifications.

Bottom line: Changing just the carb, intake, and cam nets a 21.5-lb-ft, 55hp gain over the ZZ4's baseline configuration. These are easy bolt-ons well within the capability of the average hot ...The best option up until recently was to use 305HO heads, 416s or 601s. I just saw a set of these ZZ4 heads on ebay, the aluminum 1.94/1.50 58cc L98 D-port style heads for sale. I have read all over that they are good heads, and with a roller cam .474/.510 and 208*/221* @ .050" they make 355 HP/410 TQ with 10:1 compression.Our 1402 and 1472 cylinder heads are machined for 7/16" head bolt diameters; all others are machined for 1/2" head bolts. When using heads with 1/2" holes on blocks with 7/16" threads, we recommend using ARP's 254-3708 or 254-4401 kit with their 200-8598 bushings. If you are using ARP hardware, follow their recommended torque specifications.Three things matter the most regarding SBC heads - quality, price, and performance. The FloTek 180cc aluminum alloy casting cylinder heads are the answer. Featuring 180 cc ports with a unique design made for versatility, the FloTek SBC head is one of the best SBC heads for low-end torque. Specialized Department.Details. The Edelbrock #60899 Performer RPM cylinder head is designed for 1955-86 Small-Block Chevy applications. The Edelbrock #60899 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power …It will crack! (Dont ask how I know). If I remember correctly it was 11 ft-lbs. Most torque wrenches dont go that low, so I just white knuckle them and consider it good. Will Stewart. '71 Malibu, 383 ci, Vortec heads 280H cam, TH400/2400 stall converter and 10 bolt/3.73 gear and Eaton posi. Save Share.413 posts · Joined 2001. #1 · May 26, 2004. I'm now going to install my manifold and then headers onto my (pro topline) aluminum heads. I'm using ARP bolts for the manifold, and ARP studs for the headers. ARP says 39ft lbs, but I once stripped out a thread (P.I.T.A.) at 30ft lbs, so im definately wary of doing that again.Not for use on Gen II 1992-96 LT1/LT4 engines with reverse-flow cooling system. Fast Burn Aluminum Cylinder Head Assembly. • CNC-machined aluminum performance cylinder head. • Completely assembled with …Dec 28, 2010 · 18123 posts · Joined 2002. #4 · Dec 30, 2010. it is NOT the same specs as a regular small block chevy. if you try to torque the correct flanged vortec intake bolts to 30 lb ft, you will wind up snapping the bolts. i believe the proper spec is something like 15 lb ft, but i just used my short 3/8" ratchet and snugged them down on my Nova and ...

We upgraded the heads to a pair of TFS Super 23 aluminum castings to ensure we got the most out of each intake. The heads feature a 215cc intake port with 2.08/1.60-inch stainless-steel valves and ...

Tapered Seat Plugs. Step One. Install the new plug finger tight, and complete the installation with a torque wrench. Note: If using a torque wrench vs. plug wrench, please refer to the Torque Recommendations chart below. Step Two. Turn Finger Tight. A tapered seat plug does not use gaskets and requires one-sixteenth (1/16) turn.Use intake gasket P/N 89017465 for Vortec intakes or dual pattern intake gasket P/N 19301685 for early model intakes or Vortec design intake manifolds; Dual bolt patterns for perimeter-style and center-bolt valve covers; Vortec intake manifold three-step torque specs: 2 lb.-ft.; 9 lb.-ft.; 11 lb.-ft.Don't sacrifice quality for a low price--get both with our Summit Racing™ 64cc aluminum cylinder heads for small Chevy. The lightweight heads are cast from A-356 aluminum alloy and have 200cc intake ports, 64cc combustion chambers, phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas.Mar 24, 2016 · The torque is 3 then 12 then 15 Newton-meters, with blue Loctite on clean bolts and clean threads. More than that will destroy the gaskets and they will leak! The idea is, the iron block and heads will want to move around differently compared to the aluminum manifold, so LET IT. • Torque Heads: 70 ft-lb • Torque Rocker Studs: 40-45 ft-lb • Intake Gaskets: BRODIX MG 1600 (Trim to Fit) MR. GASKET 143 • Head Gaskets: 350 - FEL-PRO 1003, COMETIC C5399 400 - FEL-PRO 1004, COMETIC C5403 • Exhaust Gaskets: FEL-PRO 1407 • Head Studs: SK HSSB 13 (Aluminum Block) BRHS 13 STD CI (Cast Iron) • Accessory Bolt Holes ...Apr 20, 2023 · Ultimately, the intake manifold bolt torque for LS engines is the same for all variations and code names, and it’s 44 in-lb for the first pass and 89 in-lb for the second and last pass. However, the tightening sequence, as we described, is equally as important. Also, to remove or install an intake manifold on supercharged LS engines, the LS9 ... The specifications given are for the typical 350 engine. The Chevrolet 350 cylinder-head torque specification is 65 ft.-lbs. The intake installed onto cast-iron heads requires 30 ft.-lbs. If your engine has aluminum cylinder heads, the threads are more fragile than the cast iron, so the intake specification is 18 ft.-lbs. Performer RPM #60619, 60639, 60719, 60739, 60889, 60899, 60949, and 60999: Cylinder Heads are designed for use on 1986 & earlier 302, 327, 350, and 400 c.i.d. Chevrolet engines (not centerbolt). NOTE: See “Specifications” section of this instruction sheet for additional cylinder head details such as spark plug position (straight or angled ...

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The Edelbrock installation flyer that came in the box of my RPM Air-Gap intake manifold provides a bolt torque sequence and recommends using a ... ProMaxx Performance 185cc Aluminum Cylinder Heads Small Block Chevy. 185cc Aluminum Cylinder Heads. Small Block Chevy. 2.02''/1.60'' Valves. 185cc Intake Runner. 72cc Combustion Chamber. Straight Plug. Assembled. Sold as pairs. Performer RPM #60619, 60639, 60719, 60739, 60889, 60899, 60949, and 60999: Cylinder Heads are designed for use on 1986 & earlier 302, 327, 350, and 400 c.i.d. Chevrolet engines (not centerbolt). NOTE: See “Specifications” section of this instruction sheet for additional cylinder head details such as spark plug position (straight or angled ... All aluminum heads should be torqued to the. bolt manufacturer’s specifications. This should be done in the proper General Motors sequence in 10 ft./lbs. increments beginning at 40 ft./lbs. Moly lube should be applied between fasteners, washers and area around head bolt to prevent galling and improper torque values. As of 2015, maximum torque values for Cummins ISX truck engines range from 1450 pound-feet at 1200 revolutions per minute for the ISX 400, to 2050 pound-feet at 1200 RPM for the IS...Advertisement As the piston finally bottoms out, the intake port is uncovered. The piston's movement has pressurized the mixture in the crankcase, so it rushes into the cylinder, d...60 ft-lbs. Bellhousing. (Transmission to Block) Engine Oil. 25 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.Comes fully assembled with heavy duty components. Designed to bolt right up to your small block Chevy engine. Features an all-aluminum construction with a natural finish. Head bolts are tested to over 180,000 PSI and has a 1/2" wrench size and a 1.375" thread length. Head gaskets offer superior heat dissipation and have a compression thickness ...Recycling aluminum cans is a way to make money on the side. If you could collect 1,000 cans per week, you would make $100 per week. Home Make Money One of the ways you might be ab... ….

The specs listed are for stock fasteners. If you use ARP or other aftermarket fasteners, follow the instructions that came with your new hardware. Related Products: Camshafts & Valvetrain, Cylinder Heads, Engine Assemblies, Oiling Systems, Other Engines & Components, Pistons & Piston Rings, Valve Covers & Dress-Up Kitssolid metal core intake gaskets. These gaskets are the preferred choice for high vacuum applications. The strong steel core prevents movement of the gasket into the intake port. The gasket also has an anti-stick coating to make gasket removal and cleanup easier, while preventing gasket failure due to intake manifold and cylinder head movement.Aluminum (aftermarket) heads and intake manifolds require a different torque than stock cast iron units. Common assembly clearances. (ALWAYS consult your piston manufacturer for recommended …25 lb/ft for the intake > Edelbrock Alum Heads. 110 lb/ft for the top row of head bolts , 100 lb/ft for the bottom row (closest to the spark plugs) These are specs for a 390 FE. Just did this setup. Also depends on if you are using studs or ARP bolts, or the original head bolts.. Check the install sheet that came with the heads. Save Share. Like.Object moved to here.Small Block Ford Intake Bolt Torque Specifications. 18 Ft/Lbs - Aluminum Heads. 22-25 Ft/Lbs - Iron Heads. Do the torque in 2 steps, first just hand tight, second with the torque wrench. IF you do have a spec from the manufacturer follow that. Make sure threads in the head are clean and in good. shape.heads. 2.02” intake and 1.60” exhaust valves with 11/32” valve ... cast aluminum valve covers. ©2018 Edelbrock LLC Catalog # 61767, 61769, 61775 & 61779 Rev. 1/9/18 - NP Page 2 of 2 Brochure #63-0313 Figure 1 - Bolt Tightening Sequence SPECIFICATIONS Head Bolt Torque 95 ft/lbs (in steps of 45-65-95)Recycling aluminum cans is a way to make money on the side. If you could collect 1,000 cans per week, you would make $100 per week. Home Make Money One of the ways you might be ab...Torque specs. 04-30-2013, 05:23 PM. I have a 351W with the performer RPM heads and Pro-Flo Intake. I need to re-torque the heads but don't have the specs for sequence or ft pounds, and since the heads are aluminum, do I need to use stretch head bolts if I replace them? Any help would be appreciated, Thanks! Sbc intake torque specs aluminum heads, What is the torque specification for an aluminum intake manifold with aluminum cylinder heads on a SBC 350 (ZZ4)? Most of the spec's I'm running across …, Apply Edelbrock Gasgacinch #9300 to intake surface of heads and both sides of intake gasket. DO NOT use cork or rubber end seals supplied with gaskets; instead, use RTV Silicone sealer. Apply a 1/4" bead along front and rear of block, overlapping gaskets at the four corners. Torque manifold bolts to 25 ft./lbs., After the intake is seated for some time, maybe an hour or so, go back and re-torque to 30 ft lbs one more time. This is for factory aluminium Chev BB intakes. If you are using an aftermarket aluminum intake refer to the mfg torque specs. My Showroom. 69' SS396 Chevelle L78 396/375hp M-21 Close Ratio Cortez Silver., Aluminum (aftermarket) heads and intake manifolds require a different torque than stock cast iron units. Common assembly clearances. (ALWAYS consult your piston manufacturer for recommended clearances. Many pistons require a tighter bore), Figure 1 - SBC Cylinder Head Bolt Torque Sequence Torque Bolts to 65 ft./lbs. (Torque in 3 steps, gradually approaching final torque spec.) † 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, Its probably not even still calibrated. I can see where you need more torque on that type of gasket, I think you will have less issues with composite type but your choice. 82 Monte Carlo SC, 355 w/Vortec heads, roller rockers, 625 Demon Carb, TRUE DUALS. 2009 Sub.5.3L LTZ 30 Gallons of gas @ $2.28/gal. bla bla bla., Three things matter the most regarding SBC heads - quality, price, and performance. The FloTek 180cc aluminum alloy casting cylinder heads are the answer. Featuring 180 cc ports with a unique design made for versatility, the FloTek SBC head is one of the best SBC heads for low-end torque. Specialized Department., 7/16 Rocker Arm Stud Kit, intake only, 8 pc ... Chevrolet Big Block Dart aluminum head exhaust bolts only, (8 pieces), ARP Stainless, 12pt Head Bolt Kit. 435-3705: Chevrolet Big Block with Edelbrock Big Victor 12° Heads, 8740, 12pt Head Stud Kit. ..., Small Block Chevrolet V8 Engine Specs | Torque Specs - Cylinder Numbering - Firing Order - Distributor Rotation - SB Chevy 267 305 327 350 400 Cid, A nearly complete or dressed engine, which includes the addition of an aluminum intake manifold, carburetor, distributor, aluminum water pump, harmonic balancer/damper, spark plugs, spark plug wires, fuel pump, and fuel line, weighs just over 550 lbs. (around 500 lbs. with aluminum cylinder heads)., Edelbrock part #7116 Performer RPM Vortec intake manifold is Based on the powerful Edelbrock #7101, this single four-barrel intake is designed for the street rod, marine and engine swap market utilizing 262-400 c.i.d. Chevy V8's with 1996 and later Vortec (L31) cast iron or Edelbrock E-Tec aluminum heads., Intake Manifold Bolts (Cast Iron Head) 25 ft.-lbs. Oil Pump Bolt: 65 ft.-lbs. Cam Sprocket Bolts: 20 ft.-lbs. Harmonic Damper Bolt: 85 ft.-lbs. Flywheel/Flexplate Bolts: ... you should follow the recommended torque specifications. Related Products: Camshafts & Valvetrain, Cylinder Heads, Engine Assemblies, Intake Manifolds, Other Engines ..., Option 2: Our 235cc "Competition" heads come with 100% CNC machined intake runners, exhaust ports and combustion chambers. Equipped with Titanium retainers and high quality components, featuring a 60/40 valve spacing which requires shaft mounted rocker arms for optimum valve train geometry (can be used with .050 offset intake rockers for drag ..., GM 350 Intake Manifold Bolts Torque Specifications. by Anne Davis. The 350 is a member of Chevrolet's small block engine family. First built in 1967, this 5.7-liter engine is featured in such vehicles as the Chevrolet Camaro and Nova. Throughout its life, the 350 has had numerous models identified by letter combinations such as L-48 and LT-1., Our largest and most powerful 60/40 head for the small block Chevy features 100% CNC machined intake runners, exhaust ports and combustion chambers. Capable of flowing 350 CFM at 0.800" of lift these heads come equipped with Titanium retainers and high quality components throughout, the 60/40 valve spacing which requires shaft mounted rocker ..., GM actually puts some type of thread locker on them from the factory. The GM torque spec is 132 in lb in three steps. (27, 106, 132) That is just about the same as 11 ft lbs. By the way for that light of a torque I would always use either an inch lb torque wrench or one that goes not much higher than 50 ft lbs total., Small Block Chevy Intake Manifold Bolt Torque Specifications. 25 Ft/Lbs. Make sure you follow the sequence in a couple of steps, worry about this more on old and aluminum manifolds. Cast Iron is much more forgiving if you are unfortunate to have to use a boat anchor of an intake., Do you know how to remove your car's intake manifold? Find out how to remove your car's intake manifold in this article from HowStuffWorks. Advertisement Repairing your car may see..., The LQ4 is a 6.0L LS (Gen. 3) small block engine used in GM trucks between 1999 and 2007. For marketing purposes, it was also known as the Vortec 6000. The engine specs and information listed here is for the stock LQ4 engine. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family ..., The LM7 5.3 Vortec engine has aluminum cylinder heads with an iron block and runs on gasoline. It has a 9.5:1 compression ratio and the heads use the LS-style cathedral intake ports and oval exhaust ports, with 1.89” intake and 1.55” exhaust valves. The LM7 uses two different camshafts., Spread Port. AFR's 220cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This is AFR's largest, best flowing head for use with conventional rocker arms. Recommended for race applications or radical "Pro Street" style builds. Included …, #1 · Nov 9, 2010. Will the vortec head where you bolt the intake down take 30 ft lbs of torque? They were orginally at 30 ft lbs, then discovered the torque should only be 11 ft …, Here is one source: Standard operating procedure with a small block Chevy and aluminum heads and production bolts is to use hardened steel flat washers under the heads of the bolts, coat the threads with waterproof goop and torque bolts to 65 ft/lbs. I usually go 35, then 50, then 65. The Techinspector has you covered., You might still say "tin foil," but chances are you're using aluminum. We recently posted about the many ways aluminum foil is helpful around the house and quickly found that menti..., FAQ If you’re a marathoner (or training to be one), you may have noticed that many popular supplements intended to improve your physical performance, fall flat when used during end..., Studs, heads: Must use Dart head studs Studs holes, Head: Blind holes Stud length in block: 1.770” - 1.550” thru + .270 bottom bullet Timing chain/gears Must use raised cam components Timing Cover: Can use stock cover / Mag w/fuel pump provision avail. Torque Specs: 1-5 7/16” studs - 75 ft lbs, M-6507-J302 Intake Valve, 1.94” dia. x 5.078" VS-305V Valve Seal 4705F-1 Valve Spring Seat/Locator Features and Specifications: Head material Aluminum Intake port location Raised approximately .100” Intake port volume 178 cc's Intake valve part number M-6507-J302 Intake Valve Head Diameter 1.94" , Fig 6-5. The valve land form of an out-of-the-box valve is typically as depicted by the shape No. 1. If a cam of less than 270 degrees of seat duration is used, both the intake and exhaust lands can be shaped as per No. 2. If the cam is bigger than 270 degrees, then the intake only should be shaped as per No. 3., What is the torque specification for an aluminum intake manifold with aluminum cylinder heads on a SBC 350 (ZZ4)? Most of the spec's I'm running across …, BP AK 275. BP AK 285. BD Series Cylinder Heads/12°/13.5°. WP BD 2000. WP BD 2300. WP BD 1010. BRODIX is serious about quality and workmanship at every step of the process. Small Block Chevy Compatible aluminum Cylinder Heads SBC., Maxx 200 SBC(Sold in Pairs) Maxx 200 SBC. (Sold in Pairs) $ 950.00 – $ 1,525.00. The Maxx 200 is the ultimate “as cast” head available that produces CNC type flow number, flowing over 280cfm. This head has produced over 550 hp on pump gas and mild cam .383. Spring Options., A nearly complete or dressed engine, which includes the addition of an aluminum intake manifold, carburetor, distributor, aluminum water pump, harmonic balancer/damper, spark plugs, spark plug wires, fuel pump, and fuel line, weighs just over 550 lbs. (around 500 lbs. with aluminum cylinder heads)., Three things matter the most regarding SBC heads - quality, price, and performance. The FloTek 180cc aluminum alloy casting cylinder heads are the answer. Featuring 180 cc ports with a unique design made for versatility, the FloTek SBC head is one of the best SBC heads for low-end torque. Specialized Department.