You might also make sure your front mounts are bolted to good stringers, I had an issue with my Kachina in that 1 engine was replaced under warranty & when they did the work they left the front mounts loose. After running the boat I noticed the engines starting to sag. I pulled both engines & found that the brackets had pounded into the stringers & bent the bolts. Needless to say I was pissed. Just I would share something easy to look at with engines out. Randy

I am not really following what you mean by having the engine mounts perpendicular to the transom. I will try to come up with a sketch of a side view to explain.

Having a Formula with the transom angle of about 12/15 degrees tilted back. I just want to start with the engine height coming off the transom intermediate housing as to be angled with the transom or the stringer of the boat. Engines at this time don't look tilted correctly . After installing headers it is really pronounced being the tails are out through the transom. I had EMI on there with rubber hoses connecting to the tail pipes. It had a stock swim platform that was remove. Thanks for your input...

Pick up a digital protractor, they can be very handy for stuff like this. Check the angle of the engine between the front crank pulley and the "outside" of the transom, the inside can be incorrect. If an alignment bar slides in easily, the angle should be 13 degrees, +/- a few tenths.

Falcon, ok thanks... So the crank pulley should be the same angle as the outside transom with the alignment tool sliding in and out with two fingers.

No, not the same angle! 13 degree difference between the exterior of the boat transom and the front of the crank pulley.

Ok got it , the transom will not be the same angle as the engine. I understand the mercruiser intermediate housing is designed for a 13 degree transom. So with That said the engine should show 0 degrees or 90 on the front pulley . I got it now.. Thanks