400 into 65 valiant

mopowers said
The crank centerline for a SB early A is actually offset 5/8" to the passenger side - according to TTI anyway. The difference between pass and driver's side frame rail to crank centerline measurements are twice that, obviously (1-1/4"). Mine landed at 9/16" to the pass side (1-1/8" total).

View attachment 1715664902

I did what most folks do and bolted up the transmission mount to locate the engine and transmission front-back. Though you could put it however far back/forward you wanted depending on how much extra work you want to do.

Hey,
It’s been a little while but I’ve been measuring side-to-side offset on a couple of occasions. I keep coming up with a consistent 69 mm (2.7”) difference between left and right which gives an offset of 1 3/8” towards passenger.

I’ve used a laser that shoots a vertical line through an empty block and tranny case “perfectly” centered. That line runs parallel to the chassis 1 3/8” offset when the tranny is on the trans cross member in the original bolt hole.

I’ve measured the offset at several points, right behind the tranny, right in front of the rear wheel well, between the rear frame rails, by the leaf spring holders and btw the leaf springs themselves. It’s consistent. The mounting hole for the trans mount is offset by about twice as much as it should.

I figure the best is if the drive line (my laser line) is parallel to the differential input shaft line. Both horizontally and vertically. So I guess I’ll mount my engine a little further to passenger than normal.

Question: what is a good incline for the engine? I’ve got it at 3 degrees right now and that seems about right to me.