I've currently got a 1981 Sidewinder 18SS with a Mecruiser 260/Alpha set up that I have been playing with for a few years now. Most of my mods have been to replace worn out parts like upgrading to msd ignition since the points distributor wore out, upgrading to a demon carb cause the quadrajet was too far gone to rebuild etc. This spring I also started picking away at the rotten wood and stiffening up the hull by adding much needed torsional stiffness with amazing results.
This boat is also the closest thing I am going to get to a corvette, and honestly, I want to turn heads at the dock or ramp with a set of corvette coil pack covers hiding in my engine compartment, so I would like to swap in an stroked LS3 (say 540hp) and take it to the next level. I am curious if anyone has swapped an LS style motor in front of a bravo drive, what parts were sourced and where from? I also have some questions as to which bravo lower would be better to use, more specifically which lower sections are still capable of thru-prop exhaust?
I also have no idea what to expect in terms of top end with this hull design, or how much horsepower is enough to get me to say a safe 80-90mph. I also know that I have to spend some time blue printing the bottom of the boat, but the boat also needs to be refinished so that doesn't bother me much. Any thoughts or help would be much appreciated, as there are not too many boats in my area that come even close to breaking 70mph, and the shops here are more dedicated to wakeboard boats and bowriders with 3.0l's than anything go-fast related.