Small-blocks used 11/32" rod bolts, BB's were 3/8".
The first generation Camaro factory rod bolts are different sizes depending on the
year and
engine size...
'67 - '69 six cylinders: 11/32"
'67 small blocks: 11/32"
'68 - '69 small blocks: 3/8"
'67 - '69 big blocks: 3/8"
Paul