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HIGH LIFE

07-13-2009 09:01 PM

H.P to Speeds

Can anyone estimate I/O H.P. to run 65--70--75 in a MAGNUM SEDAN ? App. weight that I have found is 5,400# . Thanks in advance.......HIGH LIFE

Fast Shafts

07-13-2009 11:18 PM

For what its worth, I used to race a 28 Pantera with an HP 500, it was 5300 lbs and it ran exactly 70mph. I would guess 575 to get to 75mph.

27sedan

07-14-2009 11:45 AM

I have twin 350 mags w/250pshp.
I have always run a solid 65 on radar.
another 100 hp per side should do it.

h2oboater

07-14-2009 12:54 PM

Quote:

Originally Posted by HIGH LIFE (Post 2909380)

Can anyone estimate I/O H.P. to run 65--70--75 in a MAGNUM SEDAN ? App. weight that I have found is 5,400# . Thanks in advance.......HIGH LIFE

What drive, Merc or Volvo. With 300 hp, Merc Trs 65mph, Volvo 60 to 62mph.

24degrees

07-14-2009 10:23 PM

Twin 320 EFIs and Bravos....66mph on GPS with bottom paint.

hallj

07-17-2009 11:46 AM

Quote:

Originally Posted by 24degrees (Post 2910438)

Twin 320 EFIs and Bravos....66mph on GPS with bottom paint.

Last time, you said it was 67 something.............

HIGH LIFE

07-17-2009 06:32 PM

Magnum Sedan speeds

The reason I asked the question was to compare I/O to O/B power. For the last couple of years I was running '98 Merc Pro Max 300's, I just bought 4- Merc Pro Max 300X 2003year w/ Sportmaster L/U w/ 1.25" shafts. Only installing 2, selling the other 2. With the 300's boat ran 71GPS @ 6,100RPM, the X motors run up to 6,800 RPM. Have not run boat yet, delays were one thing after another!!! Will keep updates as thing progress. HIGH LIFE

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