Does anyone know the bolt circle Dia for the ls1? or even better if someone has a dimension'd print.
I can figure it out but just wanted to shoot the question out there before I did.
I am making a bore fixture for my flowbench going to use a standard size 3.779 bore ( I am running a 4.8l)

 

What dimensions are you looking for? The nominal head bolt locations relative to the cylinder bore center?

I can take some measurements out of the CAD system tonight if so.

 

Yes in relation to the bore. That would be a big help.

Thank you!
Vic

 

This is an LS3 but the centers are all the same.