Product Summary

396, 402, 427, 454, 496, 502, Bare Cylinder Head Style

  • Heads have a 2.250” intake valve, 1.880” exhaust
  • Features manganese bronze intake guides phosphor bronze exhaust guides
  • Made from lightweight aluminum with a natural finish
  • Intake ports have a rectangular shape and exhaust ports are square
  • Comes with high temp exhaust seats for added durability

Key Specs

Cylinder Head StyleBare
Material TypeAluminum
FinishNatural
Combustion Chamber Volume133cc
Intake Runner Volume360cc

Need To Know

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Return Policy

Flo-Tek 408-500 Details

  • Head is sold individually
  • 2.250” intake valve, 1.880” exhaust
  • 360cc intake runners 
  • 128cc exhaust runners
  • 133cc chambers
  • PC seals
  • High temp exhaust seats
  • Manganese bronze intake guides
  • Phosphor bronze exhaust guides
  • Multi angle valve job
  • Angle plugs
  • Sold individually

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Flo-Tek 408-500 Specifications

KEY SPECS
MFG. Part #408-500
BrandFlo-Tek
Cylinder Head StyleBare
Material TypeAluminum
FinishNatural
Combustion Chamber Volume133cc
Intake Runner Volume360cc
GENERAL
Exhaust Runner Volume128cc
Combustion Chamber Volume Range130cc - 139cc
Intake Runner Volume Range360cc - 369cc
Exhaust Runner Volume Range120cc - 129cc
CNC-Machined RunnersNo
Spark Plug StyleAngle
Intake Port ShapeRectangle
Exhaust Port ShapeSquare
Intake Valve Diameter2.25"
Exhaust Valve Diameter1.88"
Exhaust Valves IncludedNo
Rocker Arms IncludedNo
Stud Diameter0.44"
Sold in QuantityEach

Ratings & Reviews

5

2 Reviews

Customers say

Customers commend the product's outstanding quality and affordability. The product's aesthetics were particularly well-liked. The exceptional practicality is further enhanced when combined with a head improvement kit, stressing its usability and versatility. Superior to competitor's offerings, it provides remarkable value for the investment.