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Re: [GMCnet] EFI vs Carb [message #326482 is a reply to message #326480] Wed, 29 November 2017 15:30 Go to previous messageGo to previous message
bdub is currently offline  bdub   United States
Messages: 1578
Registered: February 2004
Location: Central Texas
Karma:
Senior Member

Oh and don't bet the farm on those existing cutouts in the insulation being
perfect fit for the tanks. Both mine were off about a half inch.

bdub

-----Original Message-----
From: Gmclist On Behalf Of Jon Roche
Sent: Wednesday, November 29, 2017 2:50 PM

2 quick things.
Do you know anybody who has cut the holes in the floor and what diameter and
have r+r there fuel pumps through that hole??
I see that option talked about, and good in theory, I never heard how well
it worked out in real life. I keep thinking you need a really big hole
to manouver the fuel pump in and out of the tank, as well as getting the
lock rings twisted and in place square and proper. Not saying it cant be
done, but when I have looked at accessing the fuel senders 2-3 " below the
floor, i wonder how big of a hole is needed to service?

2nd item is when I have had fuel tanks down it is more then obvious where to
drill up. The last coach I did, i hole sawed out the foam, and drilled
up into carpet with a 1/4" bit. You wont need to lift the tank to mark
anything from bottom.

If you look at my photos you will see the factory already has a hole for
senders. At least on my 75 and the 77 i did tanks on.


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bdub
'76 Palm Beach/Central Texas
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