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Part # 7223000

Flo-Tek 203505 Small Block Ford Aluminum Cylinder Head

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  • Features hardened locks and retainers
  • Head is compatible with most flat tappet camshafts
  • Includes high-temp exhaust seats and bronze guides

$449.00

each

On Backorder

This part is Backordered. We currently do not have an estimate when this item will ship.


Quantity

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Product Summary

289, 302, 351W, Assembled Cylinder Head Style, Aluminum

  • Features hardened locks and retainers
  • Head is compatible with most flat tappet camshafts
  • Includes high-temp exhaust seats and bronze guides
  • Made from lightweight, yet strong aluminum with a natural finish
  • Intake valve diameter measures 1.940" and the exhaust valve diameter measures 1.540"

Key Specs

Cylinder Head StyleAssembled
Material TypeAluminum
FinishNatural
Combustion Chamber Volume58cc
Intake Runner Volume180cc

Need To Know

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Details

You don't need to spend a fortune to get a top-performing, lightweight aluminum cylinder head for your small-block Ford V8. This Flo-Tek head has a long list of high-end features, minus the hefty price tag.

  • Head is sold individually
  • 180cc intake runners
  • 62cc exhaust runners
  • 1.94" intake and 1.54" swirl-polished exhaust valves
  • 58cc chambers
  • Performance valve springs (.550 lift)
  • 130 lbs. spring seat pressure
  • Compatible with most flat tappet camshafts
  • Hardened locks and retainers
  • PC seals
  • High-temp exhaust seats
  • Multi angle valve job
  • Bronze guides
  • 3/8" rocker studs and guide plates

See how this Flo-Tek head stacks up against the competition in Car Craft Magazine's tech article; 6 Small Block Ford Cylinder Heads That Work.

Head Flow Specs:

Lift        Intake        Exhaust
.400      209          137
.500      223          161
.600      248          191

Application

  • Recommended Spark Plug:  AGSF-32C
  • Valve Spring Type:  Single w/ Damper
  • Valve Spring Application:  Hydraulic & Solid Flat Tappet 
  • Valve Spring Diameter:  1.465" O.D.
  • Valve Spring Seat Pressure:  115 lbs.
  • Valve Spring Rate:  240 lbs/in.
  • Max lift: 0.550"
  • Intake Valve:  1.94"
  • Exhaust Valve:  1.54"
  • Valve Type:  Stainless, Swirl-Polished
  • Air Flow Data:
    • Intake
      • 223 CFM @ .500"
      • 248 CFM @ .600"
    •  Exhaust
      • 161 CFM @ .500"
      • 191 CFM @ .600"

Specs

  • Recommended Spark Plug:  AGSF-32C
  • Valve Spring Type:  Single w/ Damper
  • Valve Spring Application:  Hydraulic & Solid Flat Tappet 
  • Valve Spring Diameter:  1.465" O.D.
  • Valve Spring Seat Pressure:  130 lbs.
  • Valve Spring Rate:  280 lbs/in.
  • Intake Valve:  1.94"
  • Exhaust Valve:  1.54"
  • Valve Type:  Stainless, Swirl-Polished
  • Air Flow Data:
    • Intake
      • 223 CFM @ .500"
      • 248 CFM @ .600"
    •  Exhaust
      • 161 CFM @ .500"
      • 191 CFM @ .600"

Specifications

KEY SPECS
MFG. Part #203505
BrandFlo-Tek
Cylinder Head StyleAssembled
Material TypeAluminum
FinishNatural
Combustion Chamber Volume58cc
Intake Runner Volume180cc
GENERAL
Exhaust Runner Volume62cc
Combustion Chamber Volume Range50cc - 59cc
Intake Runner Volume Range180cc - 189cc
Exhaust Runner Volume Range60cc - 69cc
Spark Plug StyleAngle
Intake Valve Diameter1.940"
Exhaust Valve Diameter1.540"
Spring Diameter1.470"
NotesRecommended Spark Plug: Motorcraft AGSF-32C or equivalent. Bored for 1/2" head bolts.
Sold in QuantityEach