Flo-Tek 305-600 Assembled BBC Cylinder Head, 320cc, Roller

Description

This powerful, out-of-the-box cylinder head is design matched with an outstanding, unbeatable casting technology, Heads have a thick deck design and high capacity water jackets that makes them a reliable choice for street or strip applications, Will accept stock pistons and features raised valve cover rails to reduce the chance of valve cover gasket leaks, Exhaust port location is raised .500", Features 320cc intake runners and 128cc exhaust runners
Flo-Tek 305-600 Assembled BBC Cylinder Head, 320cc, Roller
Sku # 721305600
Mfr. Part # 305-600
Condition
New
Brand
Flo-Tek
Sold
Each
Details
Notes
Headers will bolt on in most applications. Some may have interference.
Recommendations: Hooker Super Comp Headers
Stock Bolt Spread
May be necessary to use lowered motor mounts
Info
Flo-Tek Recommended Setup:
Header – Based on Chassis - 2-1/8”
Rocker Arms – Isky Roller Rockers 204-96 1.75:1 or Equivalent
Intake Manifold – Victor JR or Super Victor
A powerful, out-of-the-box cylinder head design matched with an outstanding, unbeatable casting technology. FLOTEK Aluminum Cylinder Heads are a great choice for out of the box horsepower. These FLOTEK Cylinder Heads offer a thick Deck Design and High Capacity water jackets that makes them a reliable choice for street or strip applications.
The FLOTEK BBC 320 takes stock pistons and has raised valve cover rails. The BBC 320 Exhaust Port location is raised .500".
Valve Springs:
PSK-236-1-7 Up to .600" Lift CL #147 @ 1.90 OP #365 @ 1.22 C/BIND 1.12 O.D 1.53” Single W/D I.D. 1.12
Specs
2.250 + .250 Intake Valves
1.880 Stock Length Exhaust Valves
320cc Intake Runners
128cc Exhaust Runners
133cc Combustion Chambers
Viton Positive Seals
Hardened Chrome Moly Retainers
Manganese Bronze Intake & Exhaust Guides
Rocker Studs & Guide Plates included - must be torqued during the installation process, must have clearance for valve spring retainers
Sold individually
Head Bolts: ARP-135-3703 (12pt) & ARP-135-3606 (6pt)
Head Studs: ARP-235-4303
Head Gasket: Fel-Pro 1017-1 (4.500) & Fel-Pro 1057 (4.630)
Stud Girdle: Harland Sharpe G1114 (7/16)
Intake Gasket: Fel-Pro 1252-3 (320) & Fel-Pro 1211 (360)
Exhaust Gasket: Fel-Pro 1410
Spark Plug: 14mm .750 reach, Recommended starting point Accel # 416
Head Bolt Torque Specs: 75 ft/lbs w/ oil. Coat head bolts and rocker studs with thread sealant.
Rocker Arm Stud Torque: 50 ft-lbs w/ oil
Guide Plate: Dart 2700123-4/PC-4247
WARNING: Cancer and Reproductive Harm -- p65Warnings.ca.gov
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
Angle
Intake Port Shape
Rectangle
Retainer Material
Chromoly Steel
Valve Stem Seal Material
Viton
Valve Stem Seal Type
Positive Stop
Valve Seat Material
Powdered Metal
Exhaust Port Shape
D-port
Valve Guide Material
Manganese Bronze
Intake Valves Included
Yes
Valve Spring Included
Yes
Retainers Included
Yes
Locks Included
Yes
Guideplates Included
Yes
Valve Guides Included
Yes
Valve Stem Seals Included
Yes
Exhaust Valves Included
Yes
Rocker Arms Included
No
Intake Runner Volume Range
320cc - 329cc
Exhaust Runner Volume Range
120cc - 129cc
Exhaust Runner Volume
128cc
Intake Runner Volume
320cc
CNC-Machined Runners
No
Combustion Chamber Volume
133cc
Combustion Chamber Volume Range
130cc - 139cc
Exhaust Valve Diameter
1.880
Intake Valve Diameter
2.250
Lock Style
7 Degree and 10 Degree
GTIN Code
850134007686
MFG. Part #
305-600
Reviews
Priced according to valve and workmanship.
Rated
by Sq. body blazer on June 01, 2021
Summary:
If you purchase this head, all valve need to be lapped into the seats, debure all the sharp edges in the combustion chamber, blend the intake and exhaust ports under the valve seats. Machine work not completed.
No, I would not recommend this product.
Related Items / Suggested Parts
Fel-Pro 1404 Small Block Chevy Square Port Header Gaskets
ARP 135-3703 BBC Aluminum / Iron Dart Cylinder Head Bolts
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About
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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