by Shelby Ladner
(New Albany, MS USA)
engines are Vortec GM VP engines with MPI. Original 5.7 is a GI-J 300hp in a 2005 Chaparral Sunesta 252 . I searched many hours for a used 5.7 complete engine to drop in because of the salt water open cooling the motor and all components, manifolds, starter ,risers, alternator were toast. I found a VP 5.0 from a 2004 Sunesta complete turn key ready for a great price and hoping to install. I realize 5.0 is little less hp but thinking maybe I could change pitch on prop to get by, not really concerned with top speed as long as rpm's not too excessive. I have the ECM and all components with the 5.0 and it is a complete running engine just seeing if it's possible to adapt. The 5.0 has a round main engine harness connector whereas the 5.7 has a rectangular both mounted on rear of engine.