Anyone ever put in bigger tanks for these blazers? I want to go fuel injected and was thinking of the 87 and newer tanks. Does anyone know if they will fit? I cant afford a custom tank.
CK5
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Gas Tanks
- Thread starter kyle.rj133
- Start date
bp71k5
3/4 ton status
I've heard the later model tanks can be made to fit with some modifications. I like a larger tank myself. The big problem is the filler hole is on the other side compared to the first gen.
If you just want EFI, I use an external pump which has worked well for the past few years.
If you just want EFI, I use an external pump which has worked well for the past few years.
I just picked up an 87 blazer tank, but haven't quite decided if I will use it or not. I have been researching this same issue for my 5.3/4L60e swap in my blazer. The tank is quite a bit bigger than the stock 21 gal tank. It will fit between the frame rails, but you would need to move the rear frame cross piece back as far as you can. You will also have to turn the tank so the fuel neck is turned to the passenger side unless your going to fill inside the bed. Other options I have heard guys using is an 89 15 gal jeep tank with the 87 sending unit. What I have been thinking of doing is using my brand new stock tank and putting an in tank pump in it. Here is a how to link I found
http://www.tanksinc.com/index.cfm/page/ptype=article/article_ID=6/art6.htm
Have you had any problems with keeping it running when the fuel gets lower then 1/4 full? I didnt know the filler hole was on the wrong side, but I dont see why you couldnt just turn it 180* and have it on the right side?
I definitely dont want to go to a smaller tank. Putting in an internal pump would be good, but im afraid of the fuel slosh and not having internal baffles. Thats why I want to go with a newer blazer tank. Its pretty cheap to buy, more gallons, and was made for fuel injection.
Either way you go there will need to be modifications. I already painted my frame so removing the rear cross member is not something I really want to do. Using an 87 tank is a good idea though and is 31 gallons. The newer blazer tanks are usually baffled, but if not you can baffle it yourself with tank foam.
bp71k5
3/4 ton status
I actually haven't had any problems, even on pretty steep inclines in Moab. I did modify the sender so the fuel return runs through it as well.
The filler hole on a stock tank is on the side of the tank. The later models have it on the top. You could add a body lift to make room for the hose on top if you do rotate it. I've also seen someone add a new filler hole in the bigger tank on the side. I think a fuel cell is probably the easiest option, but more expensive.
I think I may go with the NWMP afterall. The tank is 37 gallons and is a direct fit in the blazer with no modifications. Its a little pricy but so are aluminum tanks. Here is a pic I found online. Should be able to research it on the forum.
NWMP is pretty good (I've owned one) but it hangs quite low and if you've moved your axle back it might interfere with the diff cover.
If you have a body lift, you an cheat the tank up a little more.... Ultimately, I liked the idea of 37 gallons but couldn't get past the loss of departure angle and ended up selling it.
-G
If you have a body lift, you an cheat the tank up a little more.... Ultimately, I liked the idea of 37 gallons but couldn't get past the loss of departure angle and ended up selling it.
-G
cpavelko
Newbie
The NWMP tanks look like my older aftermarket tank. I replaced the sending unit in it about a year or so ago which was dated 08/83. I have a deep diff cover on it and it seems to clear fine. It was quite a tight fit between the frame rails though. The filler neck needs to sit between the frame rail and the body which needs to be wedged in at an angle to get it in. It does have an angle on the tank to help with the departure angle.
See attached pics.
See attached pics.
I used the NWMP tank (that is my pic!
) and cut a hole in it and installed a pump from a Silverado in it similar to this:
http://www.gearhead-efi.com/gm-ecm-pcm-conversion/in-tank-fuel-pump-conversion.html
I haven't taken any pics of it unfortunately - but you get the idea
I have one and I agree with Greg 100%. I am running an external walbro pump but plan on changing to the tanksinc internal. If you go with this talk plan on building a skid plate for it.
woodchk502
1/2 ton status
For reference. Not a great pic but will help you get the idea. I can take more in better light if needed.
Greg is right without some type of floor modification to raise it, this tank will hit everything.
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For reference the NWMP and a 22 Gal cell. At exhaust versus below. This is with a 5" sup lift and no body lift. I used that NWMP tank as a skid plate for many many moons.
