Flo-Tek SBC 350 Chevy Aluminum Assembled 64cc Cylinder Head w/ Studs Guideplates

Description

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
Sku # 7222000
Mfr. Part # 102505
Condition
New
Brand
Flo-Tek
Sold
Each
Details
Notes
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. We recommend 57533501or 57523501. 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.-lbs.
Intake port measures 2-1/16” x 1-1/8” which works with Fel-Pro 1205 style gaskets. Exhaust ports are square and work with Fel-Pro 1404 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 50542171 and washers 50542102 are recommended. Torque to 50-65-80 ft.-lbs., with 75 ft.lbs. torque on the bottom. Use Permatex 80631 style sealant on the threads.
Info
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. All told, these heads will flow 232 CFM @ .500" lift on the intake and 173 CFM @ .500" lift on the exhaust.
FloTek aluminum cylinder heads arrive packed full of standout features at an incredible value. At 20 lbs. 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! Pick up a set of bare FloTek heads, also available with straight or angled plugs, to build out with the valves, springs, and hardware of your choice.
Features
Heads are sold EACH
Standard port location for use with most intake and exhaust manifolds
180cc intake port volume
62cc exhaust port volume
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
Intake flows 232 CFM @ .500” lift
Exhaust flows 173 CFM @ .500” lift
Accepts both perimeter and center bolt valve covers
Single 1.46” diameter valve springs w/ inner damper
Suitable for flat tappet camshafts up to .550” lift
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
Viton positive valve seals
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)
Application
This Part Fits
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 .550” lift. The valve springs (single with flat wire inner damper) have a seat pressure of 120 lbs. Valves are +.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. @ 1.800" installed height and 290 lbs. of open pressure at 1.20” (coil bind is at 1.160”).
California Customers: This part has been identified as emissions sensitive and can only legally be installed on race-use only vehicles, off-road-use only vehicles, or pre-1965 vehicles in the State of California in accordance with the California Air Resource Board (CARB) requirements. Once your order is placed you will be contacted by Speedway Motors within 2 business days so that you can certify that you will only use such parts on these types of vehicles in California.
Specs
Material Type
Aluminum
Sold in Quantity
Each
Finish
Natural
Cylinder Head Style
Assembled
Spark Plug Style
Straight
Combustion Chamber Volume
64cc
Intake Port Shape
Rectangle
Exhaust Port Shape
Square
MFG. Part #
102505
Intake Valve Diameter
2.020
Exhaust Valve Diameter
1.600
Notes
Center to centers for passenger side are 4.80" and 5.45". Driver's side is 1.98" and 3.63"
Intake Runner Volume Range
180cc - 189cc
Exhaust Runner Volume Range
60cc - 69cc
Combustion Chamber Volume Range
60cc - 69cc
Exhaust Runner Volume
62cc
Intake Runner Volume
180cc
Stud Diameter
0.380
Spring Diameter
1.450
Reviews
Great heads!
Rated
by Tio shawno on June 08, 2021
Summary:
Awesome quality. If you do the math w/given flow chart for intake and exhaust, these heads should make at least 380ish hp..at .500 lift.
Yes, I recommend this product.
Great heads for hot rod on street
Rated
by Billy on December 23, 2020
Summary:
Used on sbc 350 build for c 10 pick up. These heads really helped throttle response and sound of engine.
Cons:
Requires different spark plugs
Pros:
Light weight
Yes, I recommend this product.
Affordable
Rated
by Mike on April 30, 2020
Summary:
Everything Went great until I had To install hardware on passenger Side of the motor extreme difficulty boasting out the air conditioning brackets
Yes, I recommend this product.
Great value
Rated
by Hot rod Mike on June 11, 2019
Summary:
Great value heads. 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.
Yes, I recommend this product.
i recommend these heads
Rated
by rick on June 10, 2019
Summary:
the finish is second to none, the included instructions, specs, answered all my questions
Yes, I recommend this product.
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Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 69 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
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