TBI Fuel line questions

[wayne]

I am going to pull the stock tank on my 90 and go to a fuel cell. My stock tank which is only a year old is trashed from hitting rocks. Even with the skid plate it got hammered. I would like to tie into the stock lines at somepoint on the frame. Does anybody know what size the lines are? My plan is to use some Earl's Performance AN to Tube Adapter Fittings. They are a compression fitting on one side and AN on the other. Also the 3rd line on the stock pump set up, is it a vent? I believe it follows the frame up to the front someplace but I haven't looked at it yet.

 

[sweetk30]

3/8 feed
5/16 return
little line is vent to evap canister on core support.

i wouldnt use comp fittings my self. flare to doubble 45* and get adaptors. and the factory lines use the same flare/oring seal as p/s lines. just diffrent size nuts. might be able to find some adaptors.

 

[dyeager535]

You could also get a Saginaw to AN adapter (I think Earl's) and run that right off the back of the fuel filter, could you not?