Fuel tank swap
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Freshman User
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Fuel tank swap
So the mid body, behind cab, drivers side under bed, fuel tank i have is rusting out, i have a fuel tank on a 06 chevy hhr, i am planning on putting the hhr tank on my 78' with a 390.
what kinda project am i looking at here?
should be simple as puttinf the ford fuel sending unit into the hhr tank or would i have to use the hhrs and just connnect fuel sender/pump?
what kinda project am i looking at here?
should be simple as puttinf the ford fuel sending unit into the hhr tank or would i have to use the hhrs and just connnect fuel sender/pump?
Fleet Mechanic
Joined: Nov 2009
Posts: 1,398
Likes: 6
If you can use the Ford sending unit, do so. If not, then you will need to match the gauge to the sending unit. Also, you may have to modify your mounting straps. If you do this, take pics and make a thread. There are some of us that are looking for different front tank options. What is the capacity of the HHR tank?
Thread Starter
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Freshman User
Joined: Jul 2018
Posts: 30
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If you can use the Ford sending unit, do so. If not, then you will need to match the gauge to the sending unit. Also, you may have to modify your mounting straps. If you do this, take pics and make a thread. There are some of us that are looking for different front tank options. What is the capacity of the HHR tank?
the space might be an issue but ya for sure, im starting the project either tonight or tomorrow. I need my truck for Tuesday work so ima cross my fingers.
i do my best to document it well.
More Turbo
Joined: Sep 2003
Posts: 514
Likes: 27
Well, for the short run.....
I can't say much because i'm running my F150 from a '73 Chrysler Newport gas tank mounted in the bed.
But it's easy to buy a new tank, Spectra Premium makes one and so do some offshore firms. Look on Ebay and find one for less than $150. Your original stock tank was around 19 - 22 gallons. If it had the rollover valve it's the F25B. If it didn't it's the F25A.
Mounting the tank in the bed solves a lot of problems. Run the fuel line between the cab and bed to wherever you can connect to the original fuel line. For me that was the 2-way valve (dual tanks).
The HHR tank is set up for port fuel injection meaning it has a high pressure pump mounted in the tank. The hole in the tank to pass the pump/sending unit through is much larger than on your '78. I don't believe your mechanical pump will suck fuel through the electric pump. But if you connect the electric pump you'll have to regulate the 45 - 55psi pressure way down for the carb.
The Chevy gas gauge system does not match up with the Ford system, either.
I think you're using a complicated system to solve a simple problem This will certainly be more work than buying a correct new tank. .
R.
But it's easy to buy a new tank, Spectra Premium makes one and so do some offshore firms. Look on Ebay and find one for less than $150. Your original stock tank was around 19 - 22 gallons. If it had the rollover valve it's the F25B. If it didn't it's the F25A.
Mounting the tank in the bed solves a lot of problems. Run the fuel line between the cab and bed to wherever you can connect to the original fuel line. For me that was the 2-way valve (dual tanks).
The HHR tank is set up for port fuel injection meaning it has a high pressure pump mounted in the tank. The hole in the tank to pass the pump/sending unit through is much larger than on your '78. I don't believe your mechanical pump will suck fuel through the electric pump. But if you connect the electric pump you'll have to regulate the 45 - 55psi pressure way down for the carb.
The Chevy gas gauge system does not match up with the Ford system, either.
I think you're using a complicated system to solve a simple problem This will certainly be more work than buying a correct new tank. .
R.
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Freshman User
Joined: Jul 2018
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I can't say much because i'm running my F150 from a '73 Chrysler Newport gas tank mounted in the bed.<br /><br />But it's easy to buy a new tank, Spectra Premium makes one and so do some offshore firms. Look on Ebay and find one for less than $150. Your original stock tank was around 19 - 22 gallons. If it had the rollover valve it's the F25B. If it didn't it's the F25A.<br />Mounting the tank in the bed solves a lot of problems. Run the fuel line between the cab and bed to wherever you can connect to the original fuel line. For me that was the 2-way valve (dual tanks).<br />The HHR tank is set up for port fuel injection meaning it has a high pressure pump mounted in the tank. The hole in the tank to pass the pump/sending unit through is much larger than on your '78. I don't believe your mechanical pump will suck fuel through the electric pump. But if you connect the electric pump you'll have to regulate the 45 - 55psi pressure way down for the carb.<br />The Chevy gas gauge system does not match up with the Ford system, either.<br /><br />I think you're using a complicated system to solve a simple problem This will certainly be more work than buying a correct new tank. .<br /><br />R.
i simply had a totalled hhr and figured id give it a try. By all means yes i can spend money on something i dont have but why not try it?
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