AKJohne
Petty Officer 1st Class
- Joined
- Mar 26, 2017
- Messages
- 220
I have a 24' glass boat with a 1997 5.7 LX, Alpha 1 G2. The boat is heavy but it runs good and we can typically cruise around 22 to 25 knots at 3100-3300 RPM. 2.1 MPG. 4600 WOT.
Motor has 300+ hours and runs fine, however it is a rebuilt motor and I just dont really know what to expect for a usable life out of this motor, nor what and or how it was rebuilt.
With that being said I have been thinking about having a spare engine, all my boating is in Alaska and the season is relatively short, a breakdown requiring a motor replacement would likely put me out of commission for the season, if I had a spare I could swap it out in a long weekend. And not be under the gun to come up with a engine. Maybe sounds extravagant, but at 65 I dont want to sit out a season.
Current motor has mech fuel pump and 4bbl, I would prefer to stick with that setup, it is also pre-vortex.
There are plenty of choices for long blocks, either new or rebuilt in the states, however shipping to AK can add up.One thing about GM small-blocks is they are plentiful as are the parts. I was in a local machine shop and he figured he could build a roller cam motor for about 3K.
The big question is, what would you guys recommend? This is a heavy 6-7K cabin style boat that we use for fishing and overnight primarily in Prince William Sound. I know I am somewhat limited by the A1 rating of max 300HP, however I do not need to do full throttle takeoffs, I wont be wave jumping and WOT is reserved for propping and emergency. I think I would be ok w/ 330/350 HP... IMHO.... Maybe the bigger concern perhaps is torque. I would like to see max torque at the RPM range we typically cruise at or slightly lower if possible.
If given these parameters what would you guys build? I am planning on using a Vortex block, with new intake, So.... type of cam? Pistons? Roller rockers? Rocker ratio? assuming a stock rotating assembly and rods would be OK for this.....
THANKS.....!
Motor has 300+ hours and runs fine, however it is a rebuilt motor and I just dont really know what to expect for a usable life out of this motor, nor what and or how it was rebuilt.
With that being said I have been thinking about having a spare engine, all my boating is in Alaska and the season is relatively short, a breakdown requiring a motor replacement would likely put me out of commission for the season, if I had a spare I could swap it out in a long weekend. And not be under the gun to come up with a engine. Maybe sounds extravagant, but at 65 I dont want to sit out a season.
Current motor has mech fuel pump and 4bbl, I would prefer to stick with that setup, it is also pre-vortex.
There are plenty of choices for long blocks, either new or rebuilt in the states, however shipping to AK can add up.One thing about GM small-blocks is they are plentiful as are the parts. I was in a local machine shop and he figured he could build a roller cam motor for about 3K.
The big question is, what would you guys recommend? This is a heavy 6-7K cabin style boat that we use for fishing and overnight primarily in Prince William Sound. I know I am somewhat limited by the A1 rating of max 300HP, however I do not need to do full throttle takeoffs, I wont be wave jumping and WOT is reserved for propping and emergency. I think I would be ok w/ 330/350 HP... IMHO.... Maybe the bigger concern perhaps is torque. I would like to see max torque at the RPM range we typically cruise at or slightly lower if possible.
If given these parameters what would you guys build? I am planning on using a Vortex block, with new intake, So.... type of cam? Pistons? Roller rockers? Rocker ratio? assuming a stock rotating assembly and rods would be OK for this.....
THANKS.....!