Needle and seat inside thread size?

[Chained_360]

Howdy all, I was just wondering if anyone here knew the inside thread size on a Holley 650 needle and seat assembly? The part where the lock screw threads into. I tried looking online but all I could find is the thread size for where the assembly screws into the bowl. Thanks!

 

[rklein383]

I think it is a 3/8 x 32 tap. I know the thread pitch is 32 tpi as I verified it with a small tap I have.

 

[RustyRatRod]

1/4 20.

 

[Chained_360]

1/4 20.

Thank you! I didn't think a 3/8 size was correct, that's what I was finding online. I appreciate it a lot!

 

[rklein383]

I think it is a 3/8 x 32 tap. I know the thread pitch is 32 tpi as I verified it with a small tap I have.

I misread what you were asking.