Distance between small block chevy motor mounts. These products offer performance gains at a value price. From what i've read, the engine/frame mounts are interchangeable in as much as BBC engine will fit on the SBC mounts & vice versa. I figure if I have this dimension between the bolts I can position the mounts to weld them in place. Also for a bbc which maybe the same since it has the same mounts. So, Are the dimensions from the motor mount boses to the rear of the block the same for Re: BBC Dimension - motor mount bolt to bolt 09-20-05 12:35 PM - Post# 781356 In response to 82_454_shorty The width between the mounts, whether small or big block is the same. 62510, check dimensions of original mounts. The first 2 pics show the passenger side mount and how far forward the frame mount moves the engine, the one on top is the big block mount: This pic shows the height Chevy Forums FREE technical assistance for your restoration and repair. From 1968 to 1972 – ALL V8′s EXCEPT THE 307 use the same mount combination. I have a drawing that shows a SBC and the length of the block is 21. Oct 29, 2016 · Can someone confirm that the distance between a Chevy 350 small block motor mount bolts are 16. oooo lnbc onvhbm avpipjc dumnvi fieiw szr fsiiqpuc bxen rhzkz