Chevelle Fuel Tank
The only question or problem you will have is that the tanks sender housing is taller that the rest of the tank, so you will either space the tank down (one chevelle guy that) or cut the trunk floor. ( I cut and make a inspection pane, I make a 1/8" x 1" frame around the cut both top and bottom to re-enforce the area of the trunk floor and then use u-nuts and bolts with a home made gasket). I used 1/8"x1" steel straps to hold up the tank.
Search the forum, you will find information of others doing the Impala tank swap.
blackrose90 did a good job
https://ls1tech.com/forums/showthrea...ht=impala+tank
Last edited by bczee; Apr 8, 2006 at 10:30 PM. Reason: correction
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http://www.competitionengineering.co...?CatCode=10070
There web site has instructions to install and what it will take.
You will need to get the tank cleaned and good welder. Many Welder will not touch a used tank and you will have to get a new 1st.
You can also use a Tanks Inc. in tank pump and sump. This kit requires no welding and can be used with most tanks. http://www.tanksinc.com/index.cfm/pa...prod/prd84.htm
Here is a url of a install from the The Detail Zone
http://www.thedetailzone.com/Tanks%2...%20Install.htm
Warning: If the car is driven on the streets and highways. Check your local and Highway laws. It may not be legal for your area.. as it is not were I live. With the lines exposed from the back of the new sump, it becomes a safety factor for street drive cars. This reason and the other cost was my reason for going with the Impala tank. Suggest you get some pictures of other peoples jobs on the sump.
Good luck.
Last edited by bczee; Jun 12, 2010 at 11:43 PM.

-Matt
With the Tanks INC kit.. you need at lease 6 1/2" to 7" in height for the kit to fit into the tank. The stock Chevelle tanks are just about that height on the forward end and I have heard that they just fit.
This is one of the reason why my cheap solution was the Impala tank. It also gave me 2 more gal's of capacity and was already baffled. The Cons to using the Impala tank was that the back end of the tank is not slanted up like a stock Chevelle tank. But I think it will not be a problem.
Good luck.
With the Tanks INC kit.. you need at lease 6 1/2" to 7" in height for the kit to fit into the tank. The stock Chevelle tanks are just about that height on the forward end and I have heard that they just fit.
This is one of the reason why my cheap solution was the Impala tank. It also gave me 2 more gal's of capacity and was already baffled. The Cons to using the Impala tank was that the back end of the tank is not slanted up like a stock Chevelle tank. But I think it will not be a problem.
Good luck.
thanks,

-Matt
Mine was brazed on. Pressure tested and all.
I'll be re-doing it again soon. Baffle the **** out of the tank or just sell this and go with a fuel cell(but I hate opening the trunk to fill it). Plus I want to pack the girls and my luggage in the back.
-Matt
https://ls1tech.com/forums/showpost....6&postcount=14
olly
I read one guy used a spacer on the rail that was 3 1/2" in the front and down to 1 1/2" in the rear to get the tank to slope. I dummy up some to try that, but it made the tank even lower !
I am just finishing up the lines and will have more pictures if you want to see them, let me know.









