Finally get to pretend I am one of the cool kids - Holley kit swap

I ran into the same questions and delima, twice with the Dart.. once with Hoopty. It's just really hard to make any decision, without the trans bolted up to where you can raise and lower it.

With Hoop, I didn't want to "C" notch one of the bed crossmembers and put it as high as it would go, without doing that. Probaby 5 degrees down. It worked fine but I really didn't care for the look of it. The drivetrain is very visible. So, earlier this year, I dropped the trans and just did it. Looks much better.

The Dart was a little different because I was also doing the 8.8 at the same time as doing the 6.4/904. I let the trans sit in it's stock position, regardless of angle. The angles were meh, ok. I found that at about 70, I had a slight vibration.. Added a little more pinion angle down with shims and it's smooth as silk now. Well, it was. Now with the 8hp going in, it changes a few things. Leaf springs are harder math for me and not typical with some calculators. My driveshaft guy says that if my trans is 3 degrees down, my pinion should also be 1-3 down..

But when referencing "angle to what??" it pretty much comes down to whatever you decide. I mean, I think I'm at 3.5 right now.. but that's by using "my reference point". May not be the same as yours, or his or whoever. I have a digital angle meter that I can zero out. I have one spot on the car that I use as zero. So know matter what angle the car is at, I zero on that point and then the angles always read as they did before moving the car. Once the car is on the ground and the suspension has settled back in, that might be 2 degrees with level earth.. who knows. But as it is now, my trans pans is almost level with the frame.. looks more ntural that way.

btw, I saw a guy on fb with almost the same build as yours.. same headers, 6 speed etc. You may have seen it.. Beau Henderson in G3 Hemi Swapped A Body Mopars. Not sure how I feel about the tunnel, but he's making good progress