In the early 2000's Barr realized that there was a need for high quality replacement engines in the marine market.  From that need Barr Marine created the Quest Engine.  This program started with the very affordable Fuel Spark Engine.  As time passed the Service Marine Base Engine was added to the line up.  Because of the huge success of these engine formats Barr added the Ready To Run and Complete Engine programs.  There is no other manufacturer in the marine engine business that can satisfy any budget and build level like Barr Marine.  When it comes time to replace your GM based marine engine look through the options and select the engine that meets your need while satisfying your budget.
 

Model & Configuration	Look & See Pics	Available Builds
Ford 351HO Marine Base Left Hand Rotation 285HP Click Here For Details		Service Base Spec Sheet
3.0 Liter, I-4, 181CID Vortec Left Hand rotation Only		Service Base 3.0L Spec Sheet
4.3 Liter, V-6, 262CID Vortec Left Hand Rotation Only Carbureted Only Click Here For The Full Line-up Of Available V-6 Engine Combos		Service Base                          4.3L Spec Sheet Fuel Spark                     4.3L FS Spec Sheet Ready To Run Complete Engine Package               4.3L Bobtail Spec Sheet
5.7 Liter, V-8, 350CID, Vortec Left Or Right Hand Rotation Carbureted Or EFI Fuel System Click Here For The Full Line-up Of Available V-8 Engine Combos		Service Base Fuel Spark - Spec Sheet Ready To Run Complete Engine Package- Carb Spec Sheet MPI Spec Sheet
8.1 Liter, V-8, 496CID, Vortec Left Hand Rotation Only EFI Fuel System Only		Fuel Spark - Spec Sheet Complete Engine Package - Spec Sheet

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See the warranty statement for base and FS engines
See the warranty statement for complete Quest engines