intake manifold bolts size ???

[hiltonig]

Anyone know what size the intake manifold bolts are ?? UNF and the length please ?

I want to get some stainless steel ones

many thanks for you replies !

[spend]

Measure your old ones?, they are 3/8 UNC IIRC and there are a couple which are a bit longer than the rest.

[hiltonig]

I would do but dont have any thread guages, I know they are not metric thats for sure, UNF, but need to check

[Ant.]

As Spend says ,they are 3/8 UNC.

[hiltonig]

many thanks chaps