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496HO w/CMI vs 500efi

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Old 12-06-2006, 12:06 PM
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Default 496HO w/CMI vs 500efi

Anybody know or have graphs depicting the HP and torque curves of these two motors? How do they compare performance wise in a single engine boat 27ft or less?
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Old 12-06-2006, 01:47 PM
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Default Re: 496HO w/CMI vs 500efi

i don't believe it is even close, are you just debating on power or adding the cmi's to your 496?
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Old 12-06-2006, 01:53 PM
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Default Re: 496HO w/CMI vs 500efi

find a boat with the efi for much more $$$ or get one with an HO and add some CMI's with a little bigger loan to cover them.


I have the 496 mag right now, but im selling the boat.
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Old 12-06-2006, 02:16 PM
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Default Re: 496HO w/CMI vs 500efi

The CMI's will give you 55 additional ponies on your 496 package.
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Old 12-06-2006, 02:54 PM
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Default Re: 496HO w/CMI vs 500efi

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Originally Posted by Too Old
The CMI's will give you 55 additional ponies on your 496 package.
I'm sure there is a big difference in torque.
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Old 12-06-2006, 03:44 PM
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Default Re: 496HO w/CMI vs 500efi

I can only speak from a 288 point of view but the difference IMO is not very much at all.. a 496ho 288 will do 70, a 500efi 288 will do 72-73, I think the HO's are pretty tourqey wasn't that the purpose of stroking the 454 out to 496... Unless your going for a 525 a 496 with headers or a raylar kit isn't a bad choice, your paying a lot of money for blue paint with the 500 efi..
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Old 12-06-2006, 05:37 PM
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Default Re: 496HO w/CMI vs 500efi

Quote:
Originally Posted by Too Old
The CMI's will give you 55 additional ponies on your 496 package.

Yeah, thats why I ask how a 496HO with the CMI's does against a stock HP500efi in a single engine boat. Near the same prop hp? Torque curves similar or shifted? Any opinions?
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Old 12-06-2006, 05:40 PM
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Default Re: 496HO w/CMI vs 500efi

Wont get much on the single 2-3 MPH. The twin results I have heard have been between 5-7 mph after props.
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Old 12-06-2006, 06:52 PM
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Default Re: 496HO w/CMI vs 500efi

I was under the impression that the Blue motors had beefer internal workings compared to the 496
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Old 12-06-2006, 07:11 PM
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Default Re: 496HO w/CMI vs 500efi

They will be very close, both right at 470-480hp, similar torque, and you can expect similar mph . 496 is just a more reliable, closed cooled updated motor, looks cool with the cmi's and a billet cover, or Raylars 103 kit will put you in the 575 hp range .
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