Charlie, finally got my Bob Drake new gas tank installed in my 41 1/2 ton pickup truck, ( purchased from Macs ) this has been a fight from the beginning. The new tank would not go back in the truck due to a difference of the lower half of tank being different from the Henry tank!!!! I massaged the lower side under the fuel fill pipe, Great it's in, NOPE, the holes to bolt tank to frame are 5/8 inch different from the Henry tank!!!! Pulled back out and had to drill frame in three places to move tank to correct location so that the fill tube would come out in correct location. ( lots of time doing this )
Charlie, I install the new S/W fuel sending unit and grounding it on the spade terminal and an addition ground under one of the screws that holds the sending unit in tank, NOW I added 2 gallon of gas to a new tank, turned on the key and the gauge just moves up to cover the empty mark. ADDED 5 more gallon from a plastic gas container and it shows just below the 1/4 mark. The new tank is a 14 gallon original looking tank, so I should show 1/2 full. I give up on all these parts. Yes, now I have good clean gas in a new gas tank but every thing I received from Macs needed something done to correct the parts. Now my gas gauge in like everyone on this thread says, JUNK!!!!
Did I tell you the 4" piece of gas hose that goes between fill tube and the tank is to large, had to go to a local hose and hydraulic shop and purchase a piece of PARKER hose to fix this problem, the two hose clamps sent to go around the furnished hose will not fit also, yes it is the correct item listed for the truck, tank etc.
ANOTHER BAD SENDING UNIT IN SOUTHERN OHIO