Re: Will 1987-1991 blazer fuel tank work?
 

Does anybody have the part number of the sending unit? I plan on putting one of these in a Suburban that I am doing a LS swap on. I would guess that the sending unit is the standard 0-90ohm?

Re: Will 1987-1991 blazer fuel tank work?
 

how can one find out which sending unit you need ? I know there is 2 inch difference from 25 to 31 gallon tank, do you measure from the pan or from bottom of the inside

Re: Will 1987-1991 blazer fuel tank work?
 

I am building a 72 K20 4x4 with lq4 4l80e and was wondering if this set up would work?

Thanks!

Re: Will 1987-1991 blazer fuel tank work?
 

good info

Re: Will 1987-1991 blazer fuel tank work?
 

Bringing this back up for information on the connections to the in tank pump. I don't want to run AN fittings. Looking for either a barbed fitting for EFI rubber hose or possible the newer style nylon fuel line.

Re: Will 1987-1991 blazer fuel tank work?
 

I installed this tank in my 72 with AN Fittings. I bought the sending unit from rock auto. They had sending units that used barbed fittings as well.

Re: Will 1987-1991 blazer fuel tank work?
 

Re: Will 1987-1991 blazer fuel tank work?
 

Dorman 800-078 feed
dorman 800-079 return

Those look like they would work.

Re: Will 1987-1991 blazer fuel tank work?
 

What sending unit did you find to get the threaded fittings?

Re: Will 1987-1991 blazer fuel tank work?
 

For anyone else looking into this the 92-96 31 gallon tank appears to be identical except the filler neck is on the opposite side but doesn't have the 90 bend on it.

Re: Will 1987-1991 blazer fuel tank work?
 

for those who have used the 87 tank what fuel gauge did you use? i ran the 87 tank with the 87 sender and my 75 fuel gauge goes past fuel everything is brand new, any suggestions?

Re: Will 1987-1991 blazer fuel tank work?
 

It's likely the ohm on the sender. Here's some good reading.

http://www.chevyclassicsclub.com/the...ry-1965-newer/

Re: Will 1987-1991 blazer fuel tank work?
 

Yeah I'm thinking about this tank as well. https://www.1aauto.com/fuel-tank/i/1...yABEgLLPPD_BwE
Filler neck hole is on the correct side for the first gen k5. I need a tank in mine and would like to go ahead and get a bigger one that would work for a further LS swap but could also work for now with my stock 72 motor and fuel pump. Anyone know if I can buy the stock 96 fuel pump/sending unit then pull the fuel pump out and replace it with a piece of fuel line. Rely on the 72 fuel pump then, to suck from the new tank just like it does with the older set up. That way I could go back to the in the tank pump when I do a LS swap later?

Re: Will 1987-1991 blazer fuel tank work?
 

What size is the filler neck on this tank?

Re: Will 1987-1991 blazer fuel tank work?
 

Not sure, the plan would be to have a filler neck welded on to fit the first gen if needed if the stock tahoe one wouldn’t work. Maybe pull a filler tube from one from a junkyard to save some $. I’ll buy a new tank though

Re: Will 1987-1991 blazer fuel tank work?
 

After doing some measuring the 92-96 tank won’t fit. It’s too wide to fit between the frame rails. I measure the width between mine at 27 1/4”, the stock tank and the 87-91 tanks are a little wider than this but only with the flanges. Guess it’s back to the 87-91 for me and having the filler next swapped to the other side on the tank or turning it around.

Re: Will 1987-1991 blazer fuel tank work?
 

Does this help?

Re: Will 1987-1991 blazer fuel tank work?
 

1 3/4" looks to me. You measure the diameter below the ridge though, least I do with a caliper

Re: Will 1987-1991 blazer fuel tank work?
 

ttt