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Wanting to build my own big line kit for my truck.

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I have a ton of AN line and fittings ranging from #3 to #12 lines and fittings. I was wondering if anyone knows off hand the thread type after you remove the Banjo bolts from the filter? Also what size line would ya run i am guessing #6 or #8. Thanks CD

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I made my own out of some extra 1/2" line left over from the Fass pump installation. I am pretty sure they are 12 MM banjo bolts, the bigger ones are 15 MM. I ended up buying fittings from Vulcan. I decided to get a tapped 90 and run the fuel pressure gauge at the filter outlet rather then the VP44 inlet. My thoughts were, with 1/2" line less the 12" long, I wont get any sort of pressure drop, plus I get a cushion from the VP44s hammering effect on the sending unit.Let a few others jump in and confirm the line size as well.

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What does this actually do? I am guessing the stock lines are restrictive? Even if truck is stock? Also is this mod worth doing if you don't have a airdog or aftermarket fuel system yet? Thanks CD

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The threads on the VP44 and fuel filter housing are both 12mm http://www.vulcanperformance.com/Metric-Adapter-06-JIC-X-12mm-p/m1206.htm. There has been quite a bit of debate about the size. Some people run 06 and some run 08. I run 06 (3/8 inch I.D. fuel line) with an 80 gph pump (at 15 psi) through the stock fuel pickup and my pressure never falls more than 2 psi.

Running 1/2" line and never see much more that 1 PSI drop for typical cruising but 2 PSI at WOT... Stock line is 6mm (0.236) 3/8 line (0.375) [Gain of 0.139] 1/2 line (0.500) [Gain of 0.264] Like in fire fightig... Try to fight a housing fire with a 3/4" garden hose and lose... Or attack that fire with a 2 1/2" fire hose and win the battle!

I have too trying to build a fuel line kit with the stock pump this are some things that I am thinking of using what do you think.Posted Image on the filter head I a was planning in removing one of them and replacing it with the stock lift pump (I got this filter heads pretty cheap too I go them for 25 bucks).

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.