magnum manifolds in a early a

64ragtop said
That's one of the things that I've wondered about. The factories design the drivelines with specific dimensions, angles, etc & folks regularly add shims and such. In your case, Valkman, raising the front of the engine 1/2" would seem to call for maybe just 1/4th" at the tranny mount. That would bring the driveline angles back to NEARLY what the engineers called for, I think.

What I have NO grasp of is just how critical are the angles, anyway??? I'd hate to have the front U-joint blow up in a hundred, or a thousand, or 10 thousand miles. Maybe worse than that would be driving around gritting my teeth, worried that I had prepared my driveline for an early death and set myself up for the legendary "pole vault of doom"

BC

Because of the u-jolt, drive shaft yoke and the rubber mounting point there is a bit of room for error when it comes to drive train alignment. People do all kinds of drive train swaps and modifications, when you doing so you definitely have take into consideration drive shaft angles and more importantly the fore and aft movement of the drive shaft. When l did this I checked this out and there seems to be plenty of movement left in the yoke. As far as angles go the 1/2" I've tilted the motor is very minor when compared to the angle changes experienced when the rear axle hits a bump. Having said that, this still a work in progress. It will be a while until I get my car on the road still, and if I do have any drivetrain issues, which I feel is unlikely, l'm pretty sure shimming the transmission to re-align the driveline should fix it. I'm not saying I have all the answers but I don't mind "giving it the old college try" :D to see if it will work!