I searched and searched, but all I found where things like, "I read somewhere." Or "It can be done." Well if anyone can link me to said thread I'd appreciate it.

Question is can I use the plastic '00-'02 LS1 fuel tank with a carbureted engine? What I'm looking to achieve more than anything is a stable/accurate fuel gauge, and secondary to that is some weight savings and corrosion prevention. I know what's involved in mounting the tank, but what needs to be done with the sender?

Can I mod and use the stock sender?

Can I use the one I already have?

I have a Holley blue external returnless pump btw.

Thanks.

 

There are threads in the LTX and LSX Engine Swap sub-forum about the plastic tanks.

I think you're barking up the wrong tree. The sending unit uses different resistance than the factory fuel gauge. Yes, it can be modified, but that doesn't lend itself to "stable/accurate".

The 3rd gen sender doesn't fit the tank, although you might be able to rig up the float from it onto the 4th gen pick-up. But, it's the sender that leads to the instability and inaccuracy of the factory fuel gauge, so why would you want to do that?

If you aren't using the in-tank pump, that's another strike against the benefits of the using the plastic tank. Plus, the plastic tank weighs about the same as the 3rd gen steel carb'd tank (having hefted both). It won't rust out, though, I'll grant you that.

I have a '01 LS1 tank in my LS1/T56 car. I put an aftermarket instrument cluster in it with a programmable fuel gauge. I'm afraid I haven't driven it as much as I would like to have, but from what I have seen, the gauge does a good job of showing full and empty (which is how you set it - when the tank is empty tell it the tank is empty, fill the tank, then tell it the tank is full), but doesn't seem to do all that much better than the 3rd gen gauge in between.

 

No 0-90 ohms? What resistance does it use? I'll probably answer my own question in a few minutes by searching, but might as well ask too. So what would you suggest to achieve an accurate fuel gauge?

 

This looks promising:

http://ls1tech.com/forums/conversion...-question.html

Oh and am I wrong to assume the tanks baffles help with fuel slosh?!

 

The baffles probably help, but I haven't had any problems with an EFI sender w/in-tank pump in the LS1/4L60E car, including plenty of drag racing, but I haven't been road racing with it, either.

 

I'm just talking regular street use, not cornering @ 40mph.