258 intake manifold - carb stud thread pitch

[plym49.2]

What is the thread pitch (both ends) for the carb studs on a stock 258 intake? 1990 YJ if it matters. TIA.

 

[NDCjeepsmith]

1990 yj carb stud size - Google Search

 

[blthomas]

Intake side is 5\16x18 I believe.

 

[plym49.2]

1990 yj carb stud size - Google Search

As you probably know, queries like that direct you to other forums and vendors selling the more popular stuff.

 

[plym49.2]

Intake side is 5\16x18 I believe.

Is it the same on both ends, or fine thread on the intake side? I'm refering to the carb to intake studs.

 

[blthomas]

I'm thinking coarse on the intake side, then fine on carb side. I don't think I have any left. I usually convert to socket head cap screws and run them through

 

[NDCjeepsmith]

I'm thinking coarse on the intake side, then fine on carb side. I don't think I have any left. I usually convert to socket head cap screws and run them through

They usually are coarse on intake, fine on carb... all I've dealt with have been anyhow.

 

[plym49.2]

That makes sense. The cast manifold would not be fine thread.

I'm making an adapter to mount a 2GC in place of the Carter BBD. I've got studs for the Rochester side on hand and wanted to confirm the other side.