Building a Spectra 20 and I have 3 gear boxes to choose from, I have 2 Champions one with 4's and the other with 10's and a C500 with 29's. I am running a BBC with basic power, 400 to 450 hp. My buddy has the same boat a little heavier actually (old coast guard boat) with similar power and he runs teh Champion with 4's, pulls skier great not a race boat but great cruiser. My intension is to build a nice cruiser that I can add soem big power to later. Would I be kiling any performance trying to run the 29's? Have had 22's in a 19' vdrive and had no issues but not sure how much the 29's change things. any help would be appreciated.
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