[THEFERMANATOR]

What exactly are you looking to do here? Also MUST know the year of the engines involved. The 88 lower unit CAN be bolted onto a 140 IF it's a looper, BUT the gear ratios are different. A V-6 uses a 1.86:1 gear ratio whereas the V-4's with the large gearcase used a 2.25:1 gear ratio. The V-4 gear case used a 2:1 ratio. IF you bolt a 1.86: ratio onto a stock 140 looper, it will be one DOGGY engine, also you will have to run some LOW pitched props to make it do much of anything. As to bolting a V-4 looper onto a V-6 mid section, it can also be done, but the engine adapter housing at the top is different from a V-4 to a V-6, and trying to swap them out is MUCh easier said than done.