Hey guys new to the Forum! I have an 87 Formula 242ls that I recently picked up a 454 MAG MPI (380hp I believe) and a bravo1 drive for a great deal. I did a lot of reading on power upgrades for this engine and it seams like I’m pretty limited, I am leaning towards removing the fuel injection, bore and stroking to a 496, using the stock heads, valvetrain, exhaust and then buying an intake. My friend has an 850cc carb that he’s willing to give me. My marina currently has 93 octane fuel so I’m not limited there. My question is what recommendations and problems could I run into? Has anyone done a similar build that could give their input? What type of power do you think I would see? The original motor was a 454 (330hp) and it was fun but looking to get allitle more out of it ecspecialy with the engine already out and on a stand. Thanks in advance!

Any recommendations for a cam? I’m definitely open to changing it out but I’ve been reading allot about reversion. I want to avoid goin with too big of a stick and finding out after the motors back in the boat. Marine motors are new to me and I’ve looked into diffrent exhausts but they seam to come with a heavy price tag. Any input on a good exhaust that won’t break the bank?