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.


Out of stock


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



Offenhauser Intakes, Manifolds, Valve Covers, Heads, and More!

White Owl Speed is the newest distributor for Offenhauser. We have exclusive merchandise and parts that have not been available for 60 years! We are constantly listing new parts and making new inventory available so make sure you check back often! Offenhauser was established in 1946 by Fred C. Offenhauser and Fran Hernandez. All of Offenhauser's parts are cast and machined in California. All Offenhauser parts are forged using a hand-carved wooden pattern at Bell foundry in South Gate, California and machined at the Offenhauser Shop In Downtown Los Angeles. Offenhauser is one of the oldest premium automotive parts manufacturers in the world operating for over 70+ years continuously.


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