LB7: 2001 duramax fuel rail fittings

[2500HeavyDuty]

Heres some pics i took while modding the rails.

 

[2500HeavyDuty]

Ported out

 

[05dmaxdriver]

Will this work on a lly ? and what size did you drill them too ?

 

[2500HeavyDuty]

afaik the 01's have the little bullet looking fitting in the rail. all other models have the fuel rail fitting the one in the pic (brass looking one) is a PPE one. i ported mine out to .125" both the fittings and bullet deal.