Fuel sending unit fuel return

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Mac442

Master Mechanic
Apr 25, 2020
257
384
63
Ocean County, NJ
On the mid 80s Carbureted g bodies, on the sending unit (3 line), how far does the return line drop into the tank? Does it end near the bottom? Or does the fuel just dump into the top of the tank?
 

UNGN

Comic Book Super Hero
Sep 6, 2016
3,048
3,264
113
Southlake, TX
Even modern high pressure returns dump at the top of the tank. Saves 2 cents.
 

Mac442

Master Mechanic
Apr 25, 2020
257
384
63
Ocean County, NJ
Thanks. The aftermarket EFI kits and pumps all have concerns with fuel aeration if the return doesn’t extend deep into that tank.
 

pontiacgp

blank
Mar 31, 2006
29,270
20,391
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Kitchener, Ontario
Thanks. The aftermarket EFI kits and pumps all have concerns with fuel aeration if the return doesn’t extend deep into that tank.

if there are restrictions in the return line that will increase the fuel pressure
 
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