I have a Mercruiser 454 4barrel carb. Trying to see if its a Mag with Rec. ports or peanut. I guess its a Gen VI. Heres my serial #0K282859 I looked everywhere and I guess it can have either one on it. I dont want to remove intake and look at head ports. Anyone know what I exactly have?
Thanks

I have older 454's and this is the site I use but nothing is coming up - maybe because your motor is newer. http://www.castingnumbers.info/site/search/859

My motor shouldnt be that old in a 1998 Crownline w/Bravo I drive just trying to figure it out. I know its a Gen VI

Pull a valve cover and get the casting number for the heads, less work than pulling the intake.

According to this site a mercruiser block with your serial number (minus the 0 in front) is a 96-97 454 mag mpi. http://www.boats.net/parts/search/Me...998/parts.html

But this site says nothing about a mag. https://webapps.brunswick.com/litera...atureSearch.do I would get the block casting number if you can get to it (I am guessing the serial number came off of the carb cover?).

That serial number is a 454 Mag MPI.


454 MAG. BRAVO MPI (GEN VI) GM 454 V-8 1996-1997

0F802350 THRU 0K999999
How about some pictures?

Seems someone has stripped the efi system and replaced with a carb?

Didn't see that. Looks like it said 7.4L Bravo to me.

In your other thread you said that on the top it said 7.4L Thunderbolt. Thunderbolt is the ignition system. 7.4L distinquishes it to be a 310 prop shaft HP cast internal engine. If it were a mag it would clearly say 454 Magnum on top. This is assuming everything is all original as it came from the factory. Also the last year of the carb engine was '97 so it looks like your '98 boat got one of the last carb engines from '97.

You can tell by the intake if its rectangle port or peanut port...pics?

That serial number range doesn't only cover mags. It also covers the 7.4L Bravo carb engines 1996-1997.