$$699.00Engine \ Cylinder Heads \ Chevy Big Block Aluminum Heads305-5057
TCH305-5057
FloTek 305-5057 Big Block Chevrolet 320cc/133cc Aluminum Cylinder Head .700 LiftAssembled, Solid Roller Cams, Sold as Each
Flo-Tek offers one of the most affordable ways to add a set of aluminum cylinder heads to your Big Block Chevrolet. These cylinder heads have a 320cc intake runner and 128cc exhaust runner, so they are great for street and off-road application were you would like to have good low in power. The 121cc cumbustion chamber, 2.250 inch intake and ...
FLO-TEK

FLO-TEK

FloTek 305-5057 Big Block Chevrolet 320cc/133cc Aluminum Cylinder Head .700 Lift

Assembled, Solid Roller Cams, Sold as Each

Item #: TCH305-5057

Mfg Part #: 305-5057

UPC #: 850134007099

Applies To Continental U.S. orders only

Specifications
Cylinder Head specifications
Cylinder Head Style
Assembled
Cylinder Head Material
Aluminum
Combustion Chamber Volume (cc)
133cc
CNC-Machined Combustion Chamber
No
Intake Runner Volume (cc)
320cc
Exhaust Runner Volume (cc)
128cc
CNC-Machined Intake Runner
No
CNC-Machined Exhaust Runner
No
Combustion Chamber Style
Standard
Intake Port Shape
Rectangular
Intake Port Location
Standard
Exhaust Port Shape
Oval
Exhaust Port Location
Raised .500 in.
Spark Plug Style
Angled
Spark Plug Type
14mm Spark Plug, .750 Reach, 5/8 Hex
Intake Valves Included
Yes
Intake Valve Diameter (in)
2.250 in.
Intake Valve Angle
24 Degree
Exhaust Valves Included
Yes
Exhaust Valve Diameter (in)
1.880 in.
Exhaust Valve Angle
15 Degree
Valve Type
Stainless, Swirl-Polished
Valve Springs Included
Yes
Valve Spring Type
Dual
Maximum Valve Lift (in)
0.700 in.
Outside Diameter of Outer Spring (in)
1.625 in.
Damper Spring Included
Yes
Valve Spring Pressure Closed
280 lbs.
Valve Spring Pressure Open
847 lbs.
Retainers Included
Yes
Retainer Material
10 Degree Chrome Moly
Locks Included
Yes
Lock Style
10 Degree Chrome Moly
Valve Stem Seals Included
Yes
Valve Stem Seal Style
Viton Positive Seals
Rocker Arm Studs Included
No
Rocker Arm Studs Size
N/A
Rocker Arms Included
No
Rocker Arm Nuts Included
No
Guideplates Included
No
Valve Cover Mounting Style
Perimeter bolt
Accessory Bolt Holes Drilled
Yes
Valve Guides Included
Yes
Intake Valve Guide Material
Manganese Bronze
Exhaust Valve Guide Material
Manganese Bronze
Valve Seats Machined
Yes
Valve Seat Machine Style
Multi Angeled
Valve Seat Material
Powder Metal
Steam Holes Drilled
N/A
Oiling Style
Through pushrod
Machined for O-Ring
No
Heat Crossover
N/A
Quantity
Sold individually
Notes
Will not work with stock stud location stud girdles.
Applications
Make
Chevrolet
Engine Family
Chevy big block Mark
General
Brand
FLO-TEK
Item #
TCH305-5057
Mfg Part #
305-5057
UPC
850134007099
Description

Flo-Tek offers one of the most affordable ways to add a set of aluminum cylinder heads to your Big Block Chevrolet. These cylinder heads have a 320cc intake runner and 128cc exhaust runner, so they are great for street and off-road application were you would like to have good low in power. The 121cc cumbustion chamber, 2.250 inch intake and 1.880 inch exhaust valves make them a great cylinder head for most stock applications. The Hi performance springs can be used on hydraulic roller cams up to .700 inches of lift. These Flo-Tek cylinder heads even come with a five angle valve job, you don't see that on most more expensive cylinder heads. These heads are complete and ready to run. Sold individually.

 

CFM Intake Short Runner at .700 337.1 CFM

CFM Intake Long Runner at .700 340.6 CFM

CFM Exhaust at .700 232.8 CFM

  • 2.250" Intake Stainless Swirl Polished Valves
  • 1.880" Exhaust Stainless Swirl Polished Valves
  • Alailable in 320cc or 360cc intake runners
  • 128cc exhaust runners
  • 121cc combustion camber
  • Hi performance springs with different lift combinations
  • 7/16" screw in studs and guide plates
  • Positive Seals
  • Hardened lock & retainers
  • High temp exhaust seats
  • Phosohor bronze intake & exhaust guides
  • 5 angle valve job
  • Steel Spring Locators
  • Sold as each
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