Head Bolt Reducer Bushings

Used for 351W heads onto 289-302 Blocks w/ 7/16" Head Bolts

These reducer adapter bushings allow heads drilled for 1/2" head bolts to be used on 289-302 blocks.

Their stepped design keeps 7/16" head bolts from sitting loose inside larger head bolt holes.

Since most SBF aftermarket heads are drilled for 1/2" head bolts, adapter bushings are needed to take up the extra space in the larger head bolt holes.

There are countless SBF heads out there made to fit both, 351W and 289-302 blocks. Even when using OE Ford castings from 351W engines, adapter bushings are required.

     Sizes & Specs:

• Washer Outside Diameter- .865"
  
• Washer Thickness- .135"
• Inside Diameter- .440"
• Step OD- .514"
  
• Overall Height"- .375"
• Manufactured from 4130 Chrome Moly Steel
• Heat treated for long life
• Black Oxidized for rust & corrosion resistance
• Pieces included in purchase- Twenty Pieces

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