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| horse power rating https://www.smwebhead.com/phpBB3/viewtopic.php?f=11&t=13859 |
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| Author: | shuman [ Sun Mar 22, 2015 11:54 am ] |
| Post subject: | horse power rating |
I purchased a 2000 268 vista in 2010 It was re powered with a factory fuel injected 454 in 2009 . We run 92 octane @ marina Any one hazard a guess on the horsepower ? It runs 45 wot on speedo with one driver and 500 lbs of gear MV knott golfin shuman |
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| Author: | Surface Interval [ Fri Apr 03, 2015 9:25 am ] |
| Post subject: | Re: horse power rating |
You don't say exactly which model or year the 454 is, so I couldn't say for sure. Many of the 454s are rated around 375hp, but this could vary depending on year and model. Higher Fuel octane should not change horsepower, and is only needed when running higher compression ratios to prevent preignition/detonation (knock). If you are required to run higher octane you may have a higher horsepower rating. |
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| Author: | GottWhat [ Fri Apr 03, 2015 9:29 am ] |
| Post subject: | Re: horse power rating |
It depends. For example, Mercruiser switched from the 454 to 496 around 2001. In 2000, Mercruiser had the 7.4 MPI which was rated at 310 HP but they also had the 454 Magnum MPI which was rated at 385 HP and had forged internals. So, even same year models had big differences in power. Also, never trust speedometer speeds, GPS is much more accurate. |
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| Author: | shuman [ Sat Apr 25, 2015 10:28 am ] |
| Post subject: | Re: horse power rating |
Thanks...... All that I know is that the engine was purchased from Four Winns in 2009 and installed due to a freezing problem that occurred the previous cold winter. Only gas available at my Marina is 92 octane not my choice . Enjoy the up coming boating season to all that have had a real traditional winter and are finally able to poke their boats towards the water. Shuman Victoria BC Vancouver Island Canada |
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