ChryslerIdiot
Recruit
- Joined
- Jun 1, 2017
- Messages
- 2
Hello All,
I am working on a repowering my 20 foot Glastron runabout. The boat was given to me as it needed a lot of work that was way over the previous owners head. When I got it, the boat had the skeleton of a Mercruiser 4.3 sitting in-front of an Alpha One. I scrapped the remainders of the engine, sold the Alpha and got a Bravo One with 1.81 gears. That's not a ratio I've ever seen in a Bravo One, but it's common in the Bravo Two.
In place of the 4.3, I built a 512 CI stroked Chrysler big block. The engine make 423 HP and 486 pound feet on the dyno. My question is this, can I stick with the low gears in the out-drive and run a rather large prop? Something like the Mercury Bravo I prop at 32 pitch? The wiring and everything is complete, I'm ready for lake testing and tuning. Any advice would be much appreciated as this is my first foray into high performance that doesn't involve black top or concrete.
Thanks!
I am working on a repowering my 20 foot Glastron runabout. The boat was given to me as it needed a lot of work that was way over the previous owners head. When I got it, the boat had the skeleton of a Mercruiser 4.3 sitting in-front of an Alpha One. I scrapped the remainders of the engine, sold the Alpha and got a Bravo One with 1.81 gears. That's not a ratio I've ever seen in a Bravo One, but it's common in the Bravo Two.
In place of the 4.3, I built a 512 CI stroked Chrysler big block. The engine make 423 HP and 486 pound feet on the dyno. My question is this, can I stick with the low gears in the out-drive and run a rather large prop? Something like the Mercury Bravo I prop at 32 pitch? The wiring and everything is complete, I'm ready for lake testing and tuning. Any advice would be much appreciated as this is my first foray into high performance that doesn't involve black top or concrete.
Thanks!