540 vs 578 or 598
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Looking to repower and want max reliability. Doesnt bigger mean more power at lower rpm? Which motor and source is the best all around choice? Goal is high cruise speed and awesome poker run performance without seasonal teardowns. Would you EFI or carb?
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Lots of variables and I agree with the valve train issues. I still believe big cubes is the way to go. EFI if I had a choice. Rebuilds would also depend on how hard and how long you hold the sticks down also.
You could go turbines!
What great decisions to have to make!!!
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You could go turbines!
What great decisions to have to make!!!
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I disagree about the valvetrain. You can build say a 632 CID engine with a set of CNC ported heads, Brodix, AFR, Dart, World, your choice. Mild compression ratio of say 8.5 to 9 to 1. Use a very mild camshaft, something in the 230is or 240ish range and make an easy 600 to 650 HP. This type of power is easily done, is not stressing parts for this size engine, will run on 89 octane gas or whale blubber, and should be a very low maintenance engine with gobs of torque.
Same engine and you want 950HP, then yeah, you better have a good "wrench" on retainer.
Chris
Same engine and you want 950HP, then yeah, you better have a good "wrench" on retainer.
Chris
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It depends on which drives your using. A 632 connected to a bravo drive is pushing it. 700 hp 540 ci seems to be the best all around package for the bravo. We have seen 400 hours with no failures.
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Have heard lots of good things about the Konrads. Just no real name recognition yet in the USA. They would probably be the perfect drive to combine with the power I am looking for.
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Originally posted by cstraub69@comcast
I disagree about the valvetrain. You can build say a 632 CID engine with a set of CNC ported heads, Brodix, AFR, Dart, World, your choice. Mild compression ratio of say 8.5 to 9 to 1. Use a very mild camshaft, something in the 230is or 240ish range and make an easy 600 to 650 HP. This type of power is easily done, is not stressing parts for this size engine, will run on 89 octane gas or whale blubber, and should be a very low maintenance engine with gobs of torque.
Same engine and you want 950HP, then yeah, you better have a good "wrench" on retainer.
Chris
I disagree about the valvetrain. You can build say a 632 CID engine with a set of CNC ported heads, Brodix, AFR, Dart, World, your choice. Mild compression ratio of say 8.5 to 9 to 1. Use a very mild camshaft, something in the 230is or 240ish range and make an easy 600 to 650 HP. This type of power is easily done, is not stressing parts for this size engine, will run on 89 octane gas or whale blubber, and should be a very low maintenance engine with gobs of torque.
Same engine and you want 950HP, then yeah, you better have a good "wrench" on retainer.
Chris
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Konrad drive. REAL curious to see how Biggus retro works out!
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JimV/Biggus,
I agree on the drives. You start getting over the 500#/ft torque mark and your Bravo is getting into dangerous territory. When building the engine power you better be ready to spend the bucks on that drive to hold it. 900HP Bullet ain't fast when she's sitting in dry dock with twisted shafts!!
Chris
I agree on the drives. You start getting over the 500#/ft torque mark and your Bravo is getting into dangerous territory. When building the engine power you better be ready to spend the bucks on that drive to hold it. 900HP Bullet ain't fast when she's sitting in dry dock with twisted shafts!!
Chris
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Valvetrain issues are not there with hydraulic roller cams like they would be with solid roller motors. Figure to make @1.2 hp per cubic inch conservatively with today's head technology.
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