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Quick help! Need stock hp# for merc 454

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eyeinstine

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Discussion starter · #1 ·
Hi all,

Does anyone have a site where i can point my surveyor too, to look up the stock HP rating of the 454 engines in the boat im am buying??

I got a copy of the survey yesterday, and he has the motors listed as 350hp (700hp total) on the survey. the boat has the common 330hp engines.. I emailed him about that, and he was sure the tags on the engines listed it as 350. The boat has been rewrapped already, do getting back will be a PIA.. He did a quick search online and came back with the info that the 330's were MPI's, and mine arent, but did find something about 300hp 454's, and maybe thats what mine were.. :confused: :confused: I know they are the 330's, the dealer has them listed at 330's. he was going to make some calls today to try and find out for sure.. We do have the serial numbers for the engines, so is there a way to look up the engines with the serial numbers and confirm the HP rating?? Im hoping to do this pretty quick, and i need to submit the survey for financing and insurance.. It prolly wont make it diff if it says 350hp ea, but it may for insurance.. 700hp in a 27' boat sometimes concerns them..

Thanks!
Ron
 
Discussion starter · #2 ·
Ok, update.. CFM emailed me the link to Mercurys telephone numbers.. I passed them on the surveyor and he just email me back with this info:

"Problem has been solved. Spoke with JoAnne at Mercury. The engine is rated at 300 hp. Shaft hp is 350 but is not the number you need. 330 hp Bravo's did not come into existence until the MPI and EFI models were introduced."

Im confused! this is all news to me! Its the stock power in an 89 272 formula.. 330HP bravos have to be one of the most common engines out there?!?!?! How the heck could merc themselves give this wrong info out to the surveyor?? Or am i, and the selling dealer wrong? They say its 330 also.. the surveyor says the tag on the valve cover states 350, but that i really only have 300 at the prop, so that is what i need to change it too on my survey.. :confused: :confused: :confused:

Anyone?? Help!
Ron
 
#4 ·
:confused: :confused: i called merc on the two 454's i had out of an 88 Formula 272 and gave them the numbers right off the valve cover as well and they told me yup 330's are what you have. BTW it said 330 right on my valve cover not 350hp. maybe you need to look at a smallblock boat :laugher: :laugher: ;)
 
Discussion starter · #5 ·
Car Biz said:
:confused: :confused: i called merc on the two 454's i had out of an 88 Formula 272 and gave them the numbers right off the valve cover as well and they told me yup 330's are what you have. BTW it said 330 right on my valve cover not 350hp. maybe you need to look at a smallblock boat :laugher: :laugher: ;)
Click to expand...
I know! I know! UNFRICKEN-believable.. :dead: :mad: :mad:

I know they are 330's, the dealer says they are 330's, the survey is sure he read 350hp on the valve cover. MERC tells him 350 is the shaft HP, that they are 300Hp's and that merc never made a 330hp carb 454!! what the heck,isnt that the most common BB motor out there at that time?!?!?!?

ARGGGGGGGGGGG!
Guess im going to call merc right now...

Thanks
Ron
 
#6 ·
according to Mercruiser's OWN product Literature from 1989, The 7.4 with B1 was rated at 330 HP. Thats a 4bbl. They didn't have any gas EFI motors back then. I have no clue why your valve covers say 350 HP, because there was nothing made then with that power. The literature does not say, but my guess would be that it is 330 CRANK HP, and 300 propshaft HP, which would explain why Merc said 300 HP.
 
Discussion starter · #8 ·
5325user said:
according to Mercruiser's OWN product Literature from 1989, The 7.4 with B1 was rated at 330 HP. Thats a 4bbl. They didn't have any gas EFI motors back then. I have no clue why your valve covers say 350 HP, because there was nothing made then with that power. The literature does not say, but my guess would be that it is 330 CRANK HP, and 300 propshaft HP, which would explain why Merc said 300 HP.
Click to expand...
Okay, i just got off the phone with merc.. spoke with someone else, not the lady the surveyor spoke with.. He looked it up, and also stated 300hp!! Argg.. I know they are 330's, and the marina said the valve covers said 330, but hte surveyor misread them.. But that doesnt help.. the surveyor will have 300hp on the survey, since that is what merc tells him based on the serial numbers.. :(
But speaking with the guy at merc, its seems this is what has happened.. My engines/drives are 1988. The boat is a 1989. But in 88, the engines are rated at the prop.. SO the 330hp engines, after going throught the outdrive are only 300hp. and as a powerpackage, it is only labeled as 300. he says the valve cover probably does say 300. In 89 or 90, it went to crank shaft ratings on the valve cover, and thats when it became 330hp rated on the valve covers.. Even though the engine/drives are the same, and nothing changed.

So, if thats what happened, i guess im okay. maybe only having twin 300's will be cheaper to insure?? :D

but if i go to repower, they will probably want to drop me or charge more if i put 330's back in the boat, since i would never find 300 rated replacements! :alien:

Whew...
Ron
 
Discussion starter · #9 ·
5325user said:
If you go to Mer's web site, and go to parts express, and type in the serial numbers, it will tell you what you have.
Click to expand...
Actually, i did do that and it only gave the model number of the engines.. but no info ont the HP rating.. and the model number came up as NLA in the part number search..

heres the model numbers of the engines if anyone else wants to give it a try, or has a way to look them up:

0C532742 & 0C532729

Thanks
Ron
 
#10 · (Edited)
Mercruiserparts.com
Shows it as a stock 7.4 motor if those are your actual serial numbers.
If they are they are 330HP
If someone put a decal stating 350HP whatever?!
Insurance company needs to know the actual serial number it is located riveted to the block right above the starter on the belhousing flange.
It faces the starboard side of the boat.
Use a flashlight and mirror and have fun :laugher:
 
#11 ·
eyeinstine said:
Awe, heck, C'Mon already??! Doesnt anybody bother to check in the technical forum anymore?!?!? :confused: :mad: :mad:
Click to expand...
Somewhere between aligators and swamps I was able to squeeze in time to play on the computer :laugher:
Sorry, been buried with 14HR days and no time to sleep. :confused1
 
#12 ·
Since when do they need to no the serial numbers????????? I always thought it was either 454/365 or 454/330 carb motors??????????
 
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Discussion starter · #13 ·
opie272 said:
Mercruiserparts.com
Shows it as a stock 7.4 motor if those are your actual serial numbers.
If they are they are 330HP
If someone put a decal stating 350HP whatever?!
Insurance company needs to know the actual serial number it is located riveted to the block right above the starter on the belhousing flange.
It faces the starboard side of the boat.
Use a flashlight and mirror and have fun :laugher:
Click to expand...
Opie,

where were you able to find the 330hp listed at mercruiserparts?? i went in, and got lal the way to the parts breakdowns and such, but i couldnt find anywhere that it stated 330hp.. Just 454/bravo..

Im most certain that the tags on the valve covers are stock and original. And if i was a betting man, well i am, but i would bet these tags say 330.. he thought it said 350! but since merc is telling him 300, thats what he wants at listed as.. We all know its 330, but i'll just leave it at the 300 now, so i can get this survey faxed to the loan folks, and then the insurance co.. Once i have to boat here, i'll check the valve cover tag, and make the corrections on the survey at that time..

Thanks
Ron

ps.. dont know of anyone that could fit in the bilge of a 272 formula to read them tags on the sides of the block! :laugher: :laugher: :laugher:
 
Discussion starter · #14 ·
89donzi said:
Since when do they need to no the serial numbers????????? I always thought it was either 454/365 or 454/330 carb motors??????????
Click to expand...
well, thats almost true.. unless you had the 420's and such of that era.. But stock for a 89' 272 formula was smallblocks or 330hp big blocks..

i just cant believe all the chaos this has caused.. how the surveyor came up with 350hp on the tags is odd, and then merc telling him 300 is even odd-er! geez...

Ron
 
Discussion starter · #15 ·
opie272 said:
Somewhere between aligators and swamps I was able to squeeze in time to play on the computer :laugher:
Sorry, been buried with 14HR days and no time to sleep. :confused1
Click to expand...
And what line of work do you do that takes you into aligator infested swamps for 14hrs?!?!? :eek: :eek:

Sounds like fun!!! :winker: :D :D

Ron
 
#17 ·
eyeinstine said:
And what line of work do you do that takes you into aligator infested swamps for 14hrs?!?!? :eek: :eek:

Sounds like fun!!! :winker: :D :D

Ron
Click to expand...
You crack me up! :laugher:

Actually I was at the city sewer treatment plant and we were experimenting with how wildlife would survive in a "Corporate Office" environment. :winker:

Treatment plant was the closest thing we could find to simulate it :laugher: :laugher:
 
Discussion starter · #18 ·
opie272 said:
You crack me up! :laugher:

Actually I was at the city sewer treatment plant and we were experimenting with how wildlife would survive in a "Corporate Office" environment. :winker:

Treatment plant was the closest thing we could find to simulate it :laugher: :laugher:
Click to expand...

Ahhhh! i get it now... I know just what ya mean..

When its not so darn cold and the ground aint froze, we dig and repair alot of Septic systems.. WELL, the repairs on existing systems can be a little like your 'corporate office' environment!!..
:fart1: :fart1: :skull: :skull:


:D Ron
 
Discussion starter · #20 ·
PatriYacht said:
There was an Merc inboard big block that was rated at 350 hp. I don't know any of the specs but i have seen them advertised in things like Searays.
Click to expand...
Hmmm.. that 350hp would be nice! but the merc tech guy on the phone confirmed both motors are original to the boat.. ;) ;)

Ron
 
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