Early A Big Block And Motor Plate

Sure - I'll take some measurements tomorrow. If I recall coorectly, I think I followed the TTI measurements for the later A-body big block cars (http://www.ttiexhaust.com/MoparClassics-Headers/400IB-218/TTi400IB_Install.pdf). I'll double check tomorrow. I do know I mocked everything up and aligned the crank centerline/trans output shaft with the pinion yoke on the rearend before I locked everything down.

View attachment 1715448052

This may help too: early a body big block engine mounts

I've heard angle milling some manifolds may work. I've also seen a couple guys swap sides and run manifolds out the front and under the k-member on the way back. A guy - Ron Thomas "Chassisman" over on Moparts has an early valiant with that configuration - https://board.moparts.org/ubbthreads/ubbthreads.php/topics/1990015/1.html. I'll see if I can find photos.

Either way, it sounds like you're well on your way to the BB early A club. Can't wait to see the progress.

Once I have all the hard parts, the mock up will be pretty quick. Sometime this year, I am sure. But I am still going to put the slant back in it and even make the swap to the long rod engine I am working on, so it will be a while before I do the finished swap. It's also important that I do not change any of the car to the point that I cannot put it back, since it does have the original drive train. "That kinda thing" is pretty important to me, even though the car isn't what I would call "special". I do have my Ford 9" housing narrowed now and I will get the perches welded on it soon, so I have "that" going on. It's all baby steps. The one thing that everybody is telling me to just throw in the trash is the 3 on the tree column. That's a deal breaker for me. The car has to retain that throughout "whatever" manifestation it becomes. That's what makes the whole car so cool. You don't see it much anymore.