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Originally Posted by IRONMAN
(Post 2707001)
Nice work!
I think that if the build focuses on torque the boat will run better in the end than going for a big hp number on the dyno. Many builds that concentrate on torque from low to midrange power trip over themselves trying to get a good high speed #. On the reverse, many builds that concentrate on too high of an rpm power peak, trip over themselves in the low to midrange power. Depends on what exactly you are trying to pinpoint here. Can you tell us more exacts of what you are thinking and what you are trying to achieve and with what ? |
and ck out those oval ports on sonny's engine !!!
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1 Attachment(s)
I kinda did the same as t500 hps . 502 mpi converted over to a 540 with a carb. 630hp @5300rpm. 700 lbs tq. Crain 741 cam. Dart Iron Eagle heads with some port work.
My numbers were with dyno headers, no accessories. |
My 540 made 667ft/lbs of torque at 4600 and 665 hp at 5800 through wet exhaust and running all accessories. The motor was speced by Bob Madera aka RMBuilder.
Chris |
Originally Posted by IRONMAN
(Post 2707001)
I think that if the build focuses on torque the boat will run better in the end than going for a big hp number on the dyno.
Remember, it also depends on what RPM that torque is at, and to be honest, that's why HP is really what matters. HP is what moves the boat (contrary to popular belief). An engine that make 800ftlbs at 7000rpm is not going to run the same as one that makes 800ftlbs at 3000rpm. |
Originally Posted by IRONMAN
(Post 2706110)
Who has some really high N/A torque numbers from a Big Block and with what combo to make it? HP is no object Torque is king for this post.....
beat that can built new for 25 K. If i had the $ i would race one of these myself.:party-smiley-004: The highest i ever seen was 1400 HP and around 1300 fpt on a N/A motor with 110 octane fuel and 632 ci. @ 7500 RPM |
Originally Posted by t500hps
(Post 2707058)
Dart 308 Iron Eagles (ported), Monoblade TB from ASM, a modified 741 cam with the intake lobe [email protected], 9.75 compression, 55# injectors. Except for the larger air breather these look like stock 500's....but they don't SOUND like them!!!
Motors are in a 2002 382 Formula. Ran 30P 5 blade Maximus yesterday 5,250 at 83mph (cruise 3,500 at 56-57)....all GPS speeds. peak HP 629 @ 5,200 peak TQ 699 @ 4,300 carb's would have made more power since the plenum is holding back air-flow. |
Originally Posted by Linster
(Post 2710320)
Very good power,
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548 cu in,640hp @ 5500,677 tq @ 3900 pulling all accessories and wet headers.Custom cam by Cam Motion in BatonRouge,La.,Machine work by Al Pitre of Pitre Race engines,EFI set up and dyno by Mark Boos of Percision Marine,assembled by me.
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The highest torque numbers I've ever seen were Bigyellowcat's turbocharged engines at 2000+. It used to be in the archives but I can't find it now.
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