hp = speed
01-16-2006, 12:31 PM
#1
Platinum Member
Platinum MemberThread Starter
Join Date: Feb 2001
Location: poughkeepsie, ny, usa
Posts: 1,198
Likes: 0
Received 0 Likes
on
0 Posts
hp = speed
2 identical boats one with twin 496 ho's one with 500efi's the 496 boat does 75mph gps and the 500 efi does 80mph gps . with the new cmi exhaust for the 496 engines claiming 55hp per side , would it be possible to hit the 80 mph mark with exhaust and proping ? seems like the formula is 20hp per 1 mile per hr ?
Charter Member
01-18-2006, 07:51 PM
#6
Masher touches my
Gold Member
Join Date: Aug 2004
Location: Phoenix, Az
Posts: 2,280
Likes: 0
Received 0 Likes
on
0 Posts
Re: hp = speed
Somebody will chime in but there are poeple claiming some pretty substantial gains from the sport tubes. It's pretty incredible that the hp500 is rated for 475 hp and the 496 with the sport tubes will have as much if not more hp. Sounds like a great porduct if it performs up to those claims.
01-18-2006, 08:01 PM
#7
Re: hp = speed
Originally Posted by blueamerican
No 5mph, but yes about 1 mph per 20HP.
Speed Calculator
01-18-2006, 08:04 PM
#8
Re: hp = speed
Originally Posted by BADKACHINA
Somebody will chime in but there are poeple claiming some pretty substantial gains from the sport tubes. It's pretty incredible that the hp500 is rated for 475 hp and the 496 with the sport tubes will have as much if not more hp. Sounds like a great porduct if it performs up to those claims.
A 496 HO is rated at 425 pshp. If claims are true, the sport tubes add 55hp, bringing the the 496 HO to 480 hp.
I don't see any reason that the 496 Ho with sport tubes shouldn't perform equally as strong as the 500efi if CMI stands behind their claims.
So to answer the original question, yes it should add at least 5 mph by adding the sport tubes. I would hope so for $7200 plus installation.
01-18-2006, 08:07 PM
#9
Re: hp = speed
Originally Posted by Harper220
A 500efi is rated at 470 pshp.
A 496 HO is rated at 425 pshp. If claims are true, the sport tubes add 55hp, bringing the the 496 HO to 480 hp.
I don't see any reason that the 496 Ho with sport tubes shouldn't perform equally as strong as the 500efi if CMI stands behind their claims.
So to answer the original question, yes it should add at least 5 mph by adding the sport tubes. I would hope so for $7200 plus installation.
A 496 HO is rated at 425 pshp. If claims are true, the sport tubes add 55hp, bringing the the 496 HO to 480 hp.
I don't see any reason that the 496 Ho with sport tubes shouldn't perform equally as strong as the 500efi if CMI stands behind their claims.
So to answer the original question, yes it should add at least 5 mph by adding the sport tubes. I would hope so for $7200 plus installation.
