rear pinion angle 4" lift blocks?

[cst 72 blazer]

ok i have an 89 and a 90 both with blocks in the rear.i had a growl in the rear of the 90 once i added 3/4 axles.to solve problem i droped the t-case cross member 1 inch with those spacers that came on the blazers..the 89 is a half ton and made a slight growl runnin round 55mph so i tryed the cross member drop and it cured the problem in foward but now makes a very odd sound in reverse? any good ideas?

[68Timber]

Most all the lift blocks I've seen have the angle correction milled into their manufacture to compensate for the lift. Are your lift blocks tapered?

[cst 72 blazer]

yes they are taperd,as you say it helps the pinion angle on the rear but the one i was suspecting is the one at the Tcase.note i was holding the brake and rocking it and found a ripped trans mount on the cross member lol feel like an idiot now.hopeing that will fix it we shall see tom.thanks for the reply

[68Timber]

Good deal, glad you found it.