I just picked up an engine stand and they sold me the wrong bolts
I got a set of 3/8" -16 x 4" Grade 5 Bolts and washers. These do not work on my block so does anyone know the size I should be using to bolt my engine to my stand? I am not sure but I think they should be possibly a 7/16 in -14 x 4 1/2" Grade 8 but not sure. Thanks for any help! 
I got a set of 3/8" -16 x 4" Grade 5 Bolts and washers. These do not work on my block so does anyone know the size I should be using to bolt my engine to my stand? I am not sure but I think they should be possibly a 7/16 in -14 x 4 1/2" Grade 8 but not sure. Thanks for any help! 