Re: whats the difference on 310 and 330 h.p 7.4 mpi
 

Didn't the LXi (wasn't that like 1 or years? 1996-1997 maybe?) use a similar intake to the MAG giving it mismatched ports but that little bit of HP gain?

And/or, maybe peanut port heads?

Or am I thinking too much?? :D

Old thread but I been looking at 2 boats, 2001 Baja rated at 310 and a 1996 cobalt rated at 330. Both have the same 4200-4600 RPM range but intakes look different. Does the 330 engine use the same small ports heads or big ports which gives the extra 20hp? I just posted the engine photos on my FB page under name LARRY HANLON and/or PAWOODCHUCK

thanks

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I have had the engines apart seen nothing different, if there is anything betting its in the ECM, timing etc