Quote Originally Posted by dmarrs View Post
I have a 470 trk blk, 4.00 eagle and had to clearance the bottoms of the cylinders for the rods.
yep you have the older block .the one to look for is the later block that was 2 pc rear main seal and gm had the block cut out like the 454 on the bottom of the bores . 4.500 crank is just about a drop in. i pick up two of this type of block s new from EQ 7 years ago