Common Duramax Thread Pitch Size Dimensions

[Animals1234]

Hey guys,

I wanted to ask what are some common thread pitches you guys see while working on these trucks? I wanted to create a "thread" (pun intended) incase I or any other users forget. Any input is great

Thanks

 

[2004LB7]

Really 1.25, 1.5 & 1 are all common on these trucks

 

[Animals1234]

I know the up pipes are M10 x 1.5 x 30MM

 

[Ironworker15]

Most of the accessories on the top end of the engine are M10x1.5 or M8x1. 25. Front accessories and brackets are a mix of M12 and M10x1.5. The studs on the front of the heads are a M10x1.5 into the head and M10x1. 25 on the nut side. As stated already, 1,1.25,1.5 and 1.75 are what you'll find on these trucks.