Intake port volume measures 180cc, Accepts both perimeter and center bolt valve covers, Valve guides are compatible with all common valve materials and fuels, The 64cc fast-burn combustion chambers are designed to deliver big power, Features a standard port location for use with most intake and exhaust manifolds. Flo-Tek 102505 Assembled S/B Chevy Aluminum Head, Straight Plug. Breathe new life into your small block Chevy with a set of FloTek aluminum cylinder heads from Speedway Motors. If you're looking for a budget-conscious, yet proven, cylinder head for bolt-on performance gains, check out these completely assembled cylinder heads from FloTek. Features like fast-burn combustion chambers, high-velocity ports, large diameter valve springs, and rugged construction make these heads the obvious performance upgrade for small block engines.
FloTek cylinder heads are designed for optimal airflow and performance on SBC engines with a 4.0 bore. Large 180cc intake runners, with an improved short-side radius, provide a rush of air into the cylinders, increasing torque. The key ingredient for big power, however, is the 64cc fast-burn combustion chambers. Air flows in and out of these chambers via a 3-angle valve job.
A 62cc exhaust runner gets the spent gasses out. 500 lift on the exhaust. FloTek aluminum cylinder heads arrive packed full of standout features at an incredible value. Apiece, the state-of-the-art aluminum alloy casting is a great base for any mild SBC build. FloTek cylinder heads are built with bronze valve guides, high nickel valve seats, milled and drilled ends for accessory bracket mounting, and are available in straight or angle spark plug configurations.
Assembled heads add stainless valves, 1.46" diameter springs, chromoly retainers, Viton seals, pushrod guide plates, and 3/8" screw-in rocker studs - for a complete bolt-on performance package! Maybe you are a bit more involved in your engine build - no problem!
Standard port location for use with most intake and exhaust manifolds. 64cc fast-burn combustion chambers deliver big power. 2.02 intake/1.60 exhaust valves.3-angle valve job enhances flow at low-to-mid lifts. Swirl polished & undercut stainless steel valves. Accepts both perimeter and center bolt valve covers. Single 1.46 diameter valve springs w/ inner damper. Suitable for flat tappet camshafts up to.
7 degree lightweight chromoly retainers and keepers. Hardened steel spring cups for durability. High nickel powdered metal valve seats provide optimum heat transfer and wear characteristics. Manganese bronze valve guides reduce friction. Valve guides are compatible with all common valve materials and fuels.
2-piece hardened steel pushrod guide plates for use with hardened pushrods. 3/8 chromoly screw-in rocker arm studs included.
Blocked exhaust heat riser manifold crossover port. 3/8 NPT coolant temperature probe port. Designed for 4 bore small block Chevy engines (302/327/350/383). These fully assembled heads are ready to run and are a great match to flat tappet camshafts. They're compatible with solid (mechanical) flat tappet or hydraulic flat tappet cams with up to.
The valve springs (single with flat wire inner damper) have a seat pressure of 120 lbs. 100" long and must be used in conjunction with aftermarket aluminum roller rocker arms to clear valve springs used which are 1.46" diameter. The valve springs have 120 lbs. Of open pressure at 1.20 (coil bind is at 1.160). Stock stamped steel rocker arms will not clear 1.437 diameter valve springs on these heads.
Must use aftermarket roller tip or full roller rocker arms if using large diameter springs. Heads feature valve cover rails that are raised 3/8 so you can use roller rockers with short valve covers (note - some factory A/C brackets may have interference issues). Rocker arm studs should be torqued to 45 ft. Intake port measures 2-1/16 x 1-1/8 which works with style gaskets.Exhaust ports are square and work with style gaskets. Champion 271RC12YC spark plugs 14mm thread, 5/8 hex, flat gasket seat. 750 reach are what we recommend as a starting point. This is a straight plug head (not angled plug).
Ignition timing should be between 35 to 38 degrees total. Set the timing with the vacuum advance hose disconnected and rev the engine up until the mechanical advance is fully in, then set it at 35 degrees to start with.You can experiment with more timing later to see if the engine runs better at closer to 38 degrees, but we don't recommend exceeding 38 degrees on most applications. Heads are not drilled for steam holes that are required on SBC 400 engines. Recommend head gasket for 4 bore engines is the Fel-Pro 1003 style gasket. Head bolts such as and washers are recommended. Use Permatex 80631 style sealant on the threads.
Center to centers for passenger side are 4.80" and 5.45". Driver's side is 1.98" and 3.63". By Tio shawno on June 08, 2021. If you do the math w/given flow chart for intake and exhaust, these heads should make at least 380ish hp..
Yes, I recommend this product. Great heads for hot rod on street.
By Billy on December 23, 2020. These heads really helped throttle response and sound of engine. By Mike on April 30, 2020. Everything Went great until I had To install hardware on passenger Side of the motor extreme difficulty boasting out the air conditioning brackets.By Hot rod Mike on June 11, 2019. Make sure you use the suggested rockers. No your won't work. Sure you can grind them have the break and start all over again. By rick on June 10, 2019. The finish is second to none, the included instructions, specs, answered all my questions. Related Items / Suggested Parts. Flo-Tek 101505 Assembled S/B Chevy Aluminum Head, Angle Plug.
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Fel-Pro P1003 S/B Chevy 265-400 Steel Ring Head Gasket 4.166 Inch Bore. Fel-Pro 1205 S/B Chevy Intake Manifold Gaskets, 1.28x2.09 Inch. Edelbrock 7501 Performer RPM Air-Gap Small Block Chevy Intake Manifold.
Please take advantage of the add to cart button on each listing to get everything in your cart prior to completing checkout. Speedway Motors is Americas Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 69 years. Repack the item in a sturdy box, include a copy of your invoice and complete the form on the back of the invoice. Speedway accepts full responsibility for the accuracy of our listings and product representation. The item "Flo-Tek SBC 350 Chevy Aluminum Assembled 64cc Cylinder Head with Studs Guideplates" is in sale since Tuesday, July 13, 2021.This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Engines & Engine Parts\Cylinder Heads". The seller is "speedway_motors" and is located in Lincoln, Nebraska. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.