Are there any Chev V8 guru's in the house?
Posted: Thu Jan 03, 2013 3:21 am
I have a new toy for the collection and need some input as to the best way to build it.
I'll start at the beginning (skip to the end if you don't care about the context, it's a bit of a long story):
The toy is a Williams Walkabout fibreglass clinker ski boat previously owned by my brother.
In action in its former glory:
https://www.dropbox.com/s/9320or46m10d9 ... 0Party.mp4
This video was about 7 or 8 years ago and at the end of the day the 350 Chev blew a big end bearing, put a 90 degree twist in one of the con rods, which was then punched out the side of the block, smashed up the crank and cam shafts, followed by the most of the remaining push rods and con rods.
So after this he began restoration, salvaged any good ancillaries components, bought a new motor, and began sanding the hull for a respray.........then lost interest. And there it has sat for ~6 years until last week when he decided it was time to get rid of all his unfinished projects and offered me the boat at a price I couldn't refuse.
So, I now have ~85% of a fully functional ski boat in 3746 pieces in no particular order. These boats are pretty simple to disassemble and re-assemble but I'm looking for input on the best way to build up the motor.
The question:
The motor is a Volvo Penta 5.0L which is actually just a marine 305 cu in Chev, the motor was rebuilt and run in, then sold as a long block.
I have all of the usual ancillaries, brackets, alternator, starter, etc plus the marine exhaust manifolds and a Holley 600cfm vacuum secondary carb.
But I have no intake manifold or ignition system.
So what I am looking for is advice on the best components and tuning to achieve fuel efficient performance and reliability.
The previous 350 chev gave good performance and we could have a good weekend with fuel left over in the 60L tank but the hull can not be insured with anything larger than a 308.
My research so far has been a little bamboozling due to the long run and variations of the 305 chev, the ran from 1966 to 1996, can be found in configurations from 130hp to 350hp, with everything from 2bbl carbs and points dizzy's up to supercharged MPFI systems.
Filtering through all this has led my to an Edelbrock Performer manifold such as this.
And a Mallory HEI distributor, such as this, but I am unsure if this dizzy needs to be controlled from an ecu or something simpler, either way I do not know what additional components would be required for the ignition system, other than plugs and leads of course.
So....ideas? suggestions? advice? comments? criticisms, constructive or otherwise?
Thanks,
Jordan.
I'll start at the beginning (skip to the end if you don't care about the context, it's a bit of a long story):
The toy is a Williams Walkabout fibreglass clinker ski boat previously owned by my brother.
In action in its former glory:
https://www.dropbox.com/s/9320or46m10d9 ... 0Party.mp4
This video was about 7 or 8 years ago and at the end of the day the 350 Chev blew a big end bearing, put a 90 degree twist in one of the con rods, which was then punched out the side of the block, smashed up the crank and cam shafts, followed by the most of the remaining push rods and con rods.
So after this he began restoration, salvaged any good ancillaries components, bought a new motor, and began sanding the hull for a respray.........then lost interest. And there it has sat for ~6 years until last week when he decided it was time to get rid of all his unfinished projects and offered me the boat at a price I couldn't refuse.
So, I now have ~85% of a fully functional ski boat in 3746 pieces in no particular order. These boats are pretty simple to disassemble and re-assemble but I'm looking for input on the best way to build up the motor.
The question:
The motor is a Volvo Penta 5.0L which is actually just a marine 305 cu in Chev, the motor was rebuilt and run in, then sold as a long block.
I have all of the usual ancillaries, brackets, alternator, starter, etc plus the marine exhaust manifolds and a Holley 600cfm vacuum secondary carb.
But I have no intake manifold or ignition system.
So what I am looking for is advice on the best components and tuning to achieve fuel efficient performance and reliability.
The previous 350 chev gave good performance and we could have a good weekend with fuel left over in the 60L tank but the hull can not be insured with anything larger than a 308.
My research so far has been a little bamboozling due to the long run and variations of the 305 chev, the ran from 1966 to 1996, can be found in configurations from 130hp to 350hp, with everything from 2bbl carbs and points dizzy's up to supercharged MPFI systems.
Filtering through all this has led my to an Edelbrock Performer manifold such as this.
And a Mallory HEI distributor, such as this, but I am unsure if this dizzy needs to be controlled from an ecu or something simpler, either way I do not know what additional components would be required for the ignition system, other than plugs and leads of course.
So....ideas? suggestions? advice? comments? criticisms, constructive or otherwise?
Thanks,
Jordan.