I just put a 440 in my 66 belvedere and a 727 tranny with b&m convertor .I drove it for a few blocks and I am getting a weird noise from tranny .Seems ok if in 1st but when I am in drive it made a loud clunk then a buzz kinda like when its moving and put into park ,and the I heard hydrolic fluid pressure kinda noise all right after the clunk .I thought I was f&&&&& but let off the gas and just idled it home when I got home seen passenger side motor mount was super loose ,tightened that and am terrified to drive again .could really help if any one has had an experiance like this ,I have a nother tranny to go in it but my buddy said could be starter cause I got the mini starter on it or the input shaft ,or torque convertor but convertor is brand new .???