Key Specs

MFG. Part #300-308
BrandHolley
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Holley 300-308 Details

The EFI Hi-Ram manifold line has a new addition for the 8.2" SBF Ford application. This manifold comes with a 105MM 1986-95 Ford 5.0 throttle body flange side mount top. The runner length and tapered cross section design will perform well for a wide range of engine combinations. The engineering team also redesigned the water crossover passage to allow room for distributor phasing. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more!Manifold is designed for a 8.2" deck height.

  • Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations
  • EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits.
  • Cast aluminum construction.*** A low profile distributor will be needed when using this manifold. We have a Sniper Hyperspark version #565-322 and a Holley EFI Dual Sync #565-211 available.
  • Features:

  • EFI fuel rails are machined for -8AN o-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits.
  • Plenum Top Gasket Type – 3/32” Round O-ring Cord
  • Manifold is designed for a 8.2" SBF deck height.
  • The 8.2 SBF manifold is available to work with 105MM throttle bodies
  • Ford 5.0 throttle body fitment
  • Lid has been verified to fit under Cervinis 2.5” cowl hood on 1979-1993 Mustangs with 351W And 302W Hi-Ram bases when using motor mounts that retain stock engine locations.
  • Designed for side mounted throttle bodies
  • Allows room for designing boosted applications
  • CARB Warning

    For use on pre-1966 vehicles only

    Emissions warning: this part only legal for sale or use in California 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.

    Holley 300-308 Specifications

    KEY SPECS
    MFG. Part #300-308
    BrandHolley
    GENERAL
    GTIN Code090127072646

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