nailhead trans to engine bolt size needed!

ok, so i just got my engine adapter from bendtsens, and im missing a few bolts. got everything else figured out, but here is what i need to know. transmission to engine bolts for a 364 nailhead. what size are they? i can figure out the lenght, but i need to know bolt size and thread pitch. i dont have the engine here with me, so i cant check until saturday, when i want to bolt it up. i think they are 7/16 14, but im not sure. please, help me!

 

7/16 x 14, aka 7/16 coarse thread.

 

thanks man. now i have to find some in that size with a tapered head. blah

trey

 

What's with the tapered head?
Fastenal has access to some strange stuff.