I knew that would get your attention. Hey all you fabricators out there, I am working on my motor swap and this one is different than most I have done in the past as it is not just bolting one in in place of another. I will need to fabricate mounts, position a cross member etc. I have a good understanding of pinion angle and relationship to the crankshaft/driveline angle. Where I am not too sure is what to measure to set a base line. If I set the frame dead level, then put the motor 2-5 degrees tail shaft down from there, then make the pinion angle match that should get me right. My problem with that is, when it is down on it's wheels, my frame does not sit level. It has a slight downward rake towards the nose. Should I sit the car on it's wheels on the garage floor (it's pretty level) take a measurment, then jack it up to obtain that same attitude? Or should I jack it up to sit dead level, then work from there? I plan to take measurements with the existing motor in place for reference before I pull it out. I suspect it has a motor/pinion angle issue as it did have a driveline vibration at high speeds. I want the new set up nice and smooooth.

Thanks for your help, I am waiting with protractor in hand!

Pat