Transmission bolt size for 5.3 gen III

[BigMean]

Whats the correct bell housing bolt size for the Gen III small blocks? Im bolting a Th350 up to my 5.3. Is it a 12mm X 175 thread? Thats what it looks like to me!
Thanks for any help.

Justin

[iceman11787]

id like to know also

[iceman11787]

dealer said they are M10x1.5x35 and M10x1.5x40

[BigMean]

Thanks! I found the same too. Forgot to post the size! Thanks Ice!