six why not find a porta braket like I have on my boat?

My 300's sit low with the 20 inch ids its really nice to be able to move them up and down as needed. I never thought Id like it better than my old set up but I do espeically with the short mids.

there is no performance difference from a 20" to a 25" mid....just put solid mounts in it when you put it all back together and go 25".....this boat is way too deep of a V to go 20" with a single.....plus the boat will probably benefit from the 25" in a few ways....

more moving parts to break. I want simplicity! lol

With a 20" offshore mid on my boat, it will put the Propshaft .5" below the bottom. with all the setback, it should be enough to have cooling and bite. I am going to lower the bracket about 1" so i still have some adjust ability.
The 20" mid i am using is rigged on a Fast track trim, and has solid mounts.

I looked at a Action 23 yesterday, the guy had his stock 300 V8 about .5" above the bottom, and has 26" setback. No LWP or anything.

I dont think Id have 20 inch mids on my boat witha fixed bracket.

I need mine really low to Get it out of the hole.

The cowlings are really close to the waterline and my tie bar has to be touching the water at No wake steerage speed. Otherwise it will blow out cavitate whatever....

My 26 was great with 25 inch mids. Sat plenty high out of the water, hooked good and ran good at speed.

JUST MY .02
Not a ton of OB experience but at least its the same kind of boat.lol

the old johnson/evinrude V8 shafts werent actually 20 and 25. They are actually 23 and 28. but i still have the 25" shaft and if i run into problems, i can always go back

Well i just picked up my new stainless marine bracket. Turns out the motor mount is lifted 5" so i am having to stick with the 25" shaft, or when i fill the boat with fuel, the bracket will be underwater.

this thread is so hard to follow

Hey Angelo
Sound like that bracket is going to force you into the 25" mid. If it wasn't for that I would have definitely run the 20. I looked at a picture of your boat at the dock on page 2 of this thread and that boat sits high in the back with only one engine. Most of those things came with twin SBCs which put a little weight in the back. A full tank of gas won't drop the back of the boat it will drop the whole boat and probably not more than a couple inches. Tanks at about the center of gravity point in that boat.
Anyway I stopped by a friends today who has that 32 Spectra I told you about and took some pictures. This is a contraption we started playing with 25 years ago from an insurance total. Boat was gutted, deck was destroyed, and it started from a striped hull. Homemade deck, engine bracket and 3 different V8s were tried. Engine bracket has 31.5" of setback and engine mounting plate measures 29" top of plate to bottom of boat. First a 25" 275 Evenrude with a best speed of 57. Then we added a CNC manual lift jack for more height and got 59. Then switched to a 85 20" 3.6 300 and got 64. Last engine was a 20" 89 4.0 300 which is still on it and we got 62 out of that. Excuse what it looks like it hasn't been used for about 7 or 8 years. This may look like a pretty crazy idea but I owned it for about 5 years and it was a ton of fun, a definite sleeper. Everybody who saw it for the first time thought it wouldn't even be able to get on plain, (including me) and it took off like a slingshot. The bow never even lifted, you could drop everybody standing and not holding on right to the floor. I had a big cockpit with no front bolsters, just a big bench in the back, we named it Standing Room Only. I used to have like 10 or 12 people in it all the time.

Thanks for the pics, I need one of those Nose cones you are hiding! lol I sealed up most of the the old through hull fittings today. I had to switch marinas and get my bike ready for the track tomorrow so i had to cut it short. The marina i was at bent my trailer jack so that is another thing i need to address.
My Lower unit upper bearing was disintegrated and i have to finish that saturday. My 25" mid should be welded back up tomorrow also. I might be back in the water monday afternoon.
I am going to set the prop shaft even with the bottom, then i still have two inches of upward adjustment. If i dont lose any performance with the 25" compared to the 20", i wont mind, but if i am losing power because of it, i can swap later, and lower the bracket 5 inches from where it ends up, if i had enough freeboard when full of fuel that is.
I also dont want to set the bracket too low so that trim tabs wont fit if i end up needing them.

I'll keep you updated

As George stated earlier, there is no performance difference. Just a matter of geagcase height dial in. If this bracket gives you the desired height than the 25 is fine. I think what he was referring to as an advantage would be as you trim with a 25 as opposed to a 20 you end up with a little extra setback respectively.

OK if let me know if i am reading this correct.

From the bottom of the boat to the top o the bracking mounting plate is 29", and the motor is 1" above the top of the mounting plate?
The 20" mid makes the distance from propshaft center to the underneath of the engine mounting bracket (where the bracket and motor mount would meet if mounted all the way down) is 30".
So the propshaft is about dead even with the bottom?