I have a bbc tall deck . these are 6.535 rods with the end that fits on the crank journal being the size of a small block . so i was told being a 400 bb std.crank id need to turn the crank to get the rods to fit.ive never heard of a bb rod haveing the small end the size of a small block.i would think its to get higher Rs or lighten up the whight.i dont know. but i was never told this when i bought this rod and piston set up that this was the set up. i was only told yes its a tall deck bbc .100 over with 6.535 rods.so id like to know if anyone heard of this and will i have any problems with turning the crank down to that size.i know it has to be forged again after that but i dont wont to do this if ill have problems. no im not going to spray it. any help would help thanks