Pinion angle?

71scamp78 said

74 Challenger I swapped in a Gen 3 hemi and 8 speed now have a pretty bad drivetrain vibration. The engine/trans in angled down 2.4 front to back. The drive shaft is 1.9 down front to back. The pinion is .5 up . Any suggestions how much to shim and up or down . Or do u think its not the problem . It's a leaf spring car

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I set me Duster up equal but opposite as directed by my driveline shop. Check the angle that your trans tail shaft is down and set your pinion up the same angle. I bought a digital angle gauge that is magnetic on the bottom and it worked real slick. I have no vibrations but I’m no expert. Just what I did on my 72 duster.

Jim