SlowBoat
Member
Time constraints forced me into a quick workaround on my FTB upgrade.
A rusty fuel return line at the tank sending unit was causing me grief with a leak and the sending unit replacement showed up some iffy steel lines and flexible lines that needed attention, with no time to wait on ordering them. So I just gathered up my fuel filter parts box of goodies that were going to go under the truck and fabbed a mounting bracket on the PS bracket and relocated them up top. I came directly off the Walbro fuel pump with a 3/8" line up to the Wix fuel filter base using Vibrant Performance -6 90 press-on swivel fittings and over to the injection pump with 3/8" line to a Vibrant Performance -6 90 press on swivel fitting on an Earls -6 to 7/16-20 o-ring base fitting drilled out to 5/16". The injection pump inlet fitting was drilled out to 3/16" holes with a carbide end mill by my machine shop in about 15 minutes. Rusty fuel line bypassed. FFM bypassed for now. (Will be modified when time permits).
My road test was on my "pain in the backside" pull. Before this hill would have me down to 25 MPH and passing the 210 mark on my factory gauge at the top. After cooling upgrades done recently, GM WP, Hayden 2840 fan clutch, Duramax fan, I was able to make it to the top running 185 degrees but still at 25 MPH towing. With my fuel injection fitting mod and fuel lines, I felt like I flew up that pull at 45 MPH! I was absolutely amazed!
I have a few more maintenance mods to perform and then I'm going for an ATT with a KOJO tune.
My younger brother has a 2000 F250 with a massaged 7.3L and he has always ribbed me about my GMC. This last week he actually commented about how well it stayed up with his Ford while I was towing behind him. Now THAT felt good.
A rusty fuel return line at the tank sending unit was causing me grief with a leak and the sending unit replacement showed up some iffy steel lines and flexible lines that needed attention, with no time to wait on ordering them. So I just gathered up my fuel filter parts box of goodies that were going to go under the truck and fabbed a mounting bracket on the PS bracket and relocated them up top. I came directly off the Walbro fuel pump with a 3/8" line up to the Wix fuel filter base using Vibrant Performance -6 90 press-on swivel fittings and over to the injection pump with 3/8" line to a Vibrant Performance -6 90 press on swivel fitting on an Earls -6 to 7/16-20 o-ring base fitting drilled out to 5/16". The injection pump inlet fitting was drilled out to 3/16" holes with a carbide end mill by my machine shop in about 15 minutes. Rusty fuel line bypassed. FFM bypassed for now. (Will be modified when time permits).
My road test was on my "pain in the backside" pull. Before this hill would have me down to 25 MPH and passing the 210 mark on my factory gauge at the top. After cooling upgrades done recently, GM WP, Hayden 2840 fan clutch, Duramax fan, I was able to make it to the top running 185 degrees but still at 25 MPH towing. With my fuel injection fitting mod and fuel lines, I felt like I flew up that pull at 45 MPH! I was absolutely amazed!
I have a few more maintenance mods to perform and then I'm going for an ATT with a KOJO tune.
My younger brother has a 2000 F250 with a massaged 7.3L and he has always ribbed me about my GMC. This last week he actually commented about how well it stayed up with his Ford while I was towing behind him. Now THAT felt good.