Volvo Michigan L70 Exhaust Manifold Thread Size

[karlbradshaw]

Hi all

I’m missing a couple of exhaust manifold bolts. An M10 starts by hand and but it doesn’t feel right. I think they’re a 3/8 UNF, can anyone confirm?

Thanks

 

[sfrs4]

If it's a straight old L70 not a B,C,D etc then yes 3/8th But UNC 8.8 60mm one end 42 the other