[DeTomaso] fuel pumps

[Garth Rodericks]

<<< Also, it seems any pump sucking through a tiny inlet will never be happy. Anyone done a -8 upgrade from the tank to the pump? >>>
 Not a -8, but I plumbed mine with 3/8" (-6).
I went with the RobbMC pump and pre-filter on my 383 stroker Cleveland when the Holley mechanical pump began leaking.I plumbed it from the bottom of the tank with a 1/2" 90-degree stainless marine fuel valve from Groco.    http://www.jamestowndistributors.com/userportal/show_product.do?pid=56744
and 3/8" steel fuel line from the pump to the top of the engine where it goes through a fuel filter right before the carb inlet.

The biggest issue, regardless of where you plumb your fuel line from is the restriction in the banjo fitting or elbow.  The stock banjo fitting on the top of the tank forces all the fuel through a small orifice that's about 1/8" in diameter.  And many 90-degree fittings significantly restrict fuel flow as well.  I went with the 1/2" Groco Marine fitting so it wouldn't become the bottleneck that starves my engine for fuel.
Cheers!Garth#4033
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   <<< Also, it seems any pump sucking through a tiny inlet will never be
   happy. Anyone done a -8 upgrade from the tank to the pump? >>>

   Not a -8, but I plumbed mine with 3/8" (-6).
   I went with the RobbMC pump and pre-filter on my 383 stroker Cleveland
   when the Holley mechanical pump began leaking.
   I plumbed it from the bottom of the tank with a 1/2" 90-degree
   stainless marine fuel valve from Groco.
   [1]
   http://www.jamestowndistributors.com/userportal/show_product.do?pid=567
   44
   and 3/8" steel fuel line from the pump to the top of the engine where
   it goes through a fuel filter right before the carb inlet.
   The biggest issue, regardless of where you plumb your fuel line from is
   the restriction in the banjo fitting or elbow.  The stock banjo fitting
   on the top of the tank forces all the fuel through a small orifice
   that's about 1/8" in diameter.  And many 90-degree fittings
   significantly restrict fuel flow as well.  I went with the 1/2" Groco
   Marine fitting so it wouldn't become the bottleneck that starves my
   engine for fuel.
   Cheers!
   Garth
   #4033

References

   1. http://www.jamestowndistributors.com/userportal/show_product.do?pid=56744