mitchvon
New Member
- Sep 2, 2023
- 12
- Boat Info
- 1975 Sea Ray SRV220 Overnighter HD, EZ Loader dual axle trailer Boat was garage find only 535hrs
- Engines
- 1 engine OMC/Ford 302 V8 with a 2 barrel carb
Agreed. I beleive, judgeing from the motor mounts this is a stringer set up.
I considered pulling the powertrain and replacing it with a 350 MPI V8 and Bravo III drive. total cost about 3-4 X the purschase price for the boat and trailer. The dual axle trailer came without lights or brakes. I bought and installed a new hydraulic actuator, 4 new rotors and disc brakes, new tires and wheels then wired it and installed lights to be safe and legal. All worked fine when I pulled her out in Brinnon and pulled her up to Port Angeles.
351 GT40 heads have larger combustion and valves for better flow and are realatively inexpnsive. Ford used them on the Explorer from 92-01 so getting them from a wreching yard and letting a machinist rebiuid them is typically less sweat and labor then an exngine swap. Typically provides a increase of 20-30% hp and I can re-use the 302 manifold as the angle is from the block. The GT40 heads take a larger bolt diameter but there are there are inserts available to use original bolts. There are also some marine fuel injection kits available as well for improved fuel efficiency. Then of course there are a litany of prop choices. If money were no object I'd consider a toroidal propeller, google Sharrow Marine, whose performance shows some impressive numbers. Lastly if I wanted to get nuts, I could rig her with hydrafoils but I'd need a longer shaft outdrive.
I'll see how she runs after some lower cost improvements.
I considered pulling the powertrain and replacing it with a 350 MPI V8 and Bravo III drive. total cost about 3-4 X the purschase price for the boat and trailer. The dual axle trailer came without lights or brakes. I bought and installed a new hydraulic actuator, 4 new rotors and disc brakes, new tires and wheels then wired it and installed lights to be safe and legal. All worked fine when I pulled her out in Brinnon and pulled her up to Port Angeles.
351 GT40 heads have larger combustion and valves for better flow and are realatively inexpnsive. Ford used them on the Explorer from 92-01 so getting them from a wreching yard and letting a machinist rebiuid them is typically less sweat and labor then an exngine swap. Typically provides a increase of 20-30% hp and I can re-use the 302 manifold as the angle is from the block. The GT40 heads take a larger bolt diameter but there are there are inserts available to use original bolts. There are also some marine fuel injection kits available as well for improved fuel efficiency. Then of course there are a litany of prop choices. If money were no object I'd consider a toroidal propeller, google Sharrow Marine, whose performance shows some impressive numbers. Lastly if I wanted to get nuts, I could rig her with hydrafoils but I'd need a longer shaft outdrive.
I'll see how she runs after some lower cost improvements.