Magnum or No?

[RayRay70]

Mercruiser 7.4l 454 4bbl

Engine: 0D390851
Transom: 0D370469
Drive: 0D403732 -- 7.4L Bravo 88-91

The boat came with stickers attached to the stabilizer bars proclaiming 360 hp which would indicate magnum but I'd like to know for sure.

Thanks for any guidance.

 

[alldodge]

Others may be able to provide better info, but manual list all "magnum'" with cubic inches (so 454, 350, etc). Motors with 7.4, 5.7 etc are not

 

[Fun Times]

0D390851 shows this one to be a MERCRUISER W/ PS 7.4L BRAVO Model Number 474B110CS.

Typically if it was a Mag, it would say it in the literature that comes up under the serial number.

 

[QBhoy]

I’d be 99% certain it will be a standard 4 barrel 7.4 with a quoted 330hp in its day. Never really understood the difference even between a 5.7 4 barrel (from the 90’s) and a 350 magnum with a 4 barrel. Both had 260hp as far as I know.

 

[muc]

Magnum was more of a marketing term and didn't really mean much depending on years.

 

[RayRay70]

Yeah I'm with you guys thinking it's the standard model.

 

[Scott Danforth]

Never really understood the difference even between a 5.7 4 barrel (from the 90’s) and a 350 magnum with a 4 barrel. Both had 260hp as far as I know.

Marketing. Can charge more for stickers

 

[muc]

Marketing. Can charge more for stickers

Decals and ECMs are just a couple of examples of engine manufacturers setting higher prices for basically the same product, based only on how much that product sold for originally.