Offenhauser 5921 Tunnel Ram Base


Offenhauser 5921 Tunnel Ram Base for Chevrolet 283-400. Base only. Use 5921 G for gasket in between 5921 base & 5922 top.

Fits the following tops:

  • 5922 Single Quad top for Holley or T.Q. carbs
  • 5923 Dual Quad top for Holley carbs.
  • 5930 Single Quad top only to accept Holley 4500
  • 5978 3 Weber carb set up
  • 5988 Dual Quad top for T.Q. carbs only

If you do not see your top listed for purchase, please email or call us.


3 in stock


Offenhauser 5921 Tunnel Ram Base only for Chevrolet 327-350-400.


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