Results 1 to 2 of 2

Thread: what ratio should I order?

  1. #1
    Join Date
    Oct 2009

    Lightbulb what ratio should I order?

    hello there Im gettin ready to order my new outdrive I dont know what outdrive used to be in the boat becasuse I bought the boat without outdrive and engine, the boat is a 1994 the engine is a mercruiser 5.0 what is the correct ratio for the outdrive and in the future if I want to upgrade to a 5.7 the outdrive can be the same? thanks.

  2. #2
    Join Date
    Sep 2006


    If it is a 5.0 with a 4 barrel carb, then it would be a 1.47 ratio wich will work good with a 5.7 also. If it is a 2 barrel carb, then it will be a 1.62. A 1.62 will still work with a 5.7 but will not last as long.

    Tech Support

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

115 S. Forest Lakes Blvd.
Oldsmar, FL 34677

tel: 813.925.7127
fax: 813.925.7064

Sterndrive Engineering, Inc. (SEI) manufactures a stern drive designed to replace Mercury Marine's MerCruiser® Alpha One®, R, MR, Gen II and Bravo One® stern drives. MerCruiser® Alpha One, R, MR, Gen II and Bravo One® are trademarks of the Brunswick Corporation. SEI has no affiliation with the Brunswick Corporation. Consequently, any warranties governing products and or sold by Brunswick Corporation will not apply to products manufactured and or sold by SEI, or to products damaged due to the operation of an SEI product.