1st gen fbody (68 fire bird) swap. My question is has anyone used a stock tank and return (big block) sender with an inline and has it working and if so what is the performance? Also, has any one used a 4th gen tank on a 1st gen? I'm looking for alternatives to purchasing an expensive FI tank or running a fuel cell.

 

Check the sticky on 67-69 Camaros at the top of the page. There are some posts there on modifying the stock tank. That should get you started.

Pat

 

hey i have the original (replacement) tank in my car. i used a frame mounted fuel pump (mounted on the trunk) and a 99 corvette fuel filter\regulator because it has a built in regulator. works great.

 

So you used an unmodified tank (IE from classic industries) and an external pump (IE Walbro 255 inline fuel pump) and a 99 corvette filter and regulator. No changes to the tank at all.

 

yes. pm your email and i will send pics. will that help?

 

Your tank came with a return line already built in?...... maybe I just need a new tank and a “special” sending unit…… Why am I under the impression mine doesn’t have one…….It’s too late for me to go out and check…..Guess I’ll look tomorrow…..

 

i havent finished mine yet, but i was planning on adding a rear sump to the original tank an run an inline (ala walbro) pump with a return style fpr. whole setup should cost maybe $300. my friend installed the 4th gen pump bucket into his tank by cutting a hole and tig welding some new steel in there to let the bucket sit lower. He torched out a ring from a 4th gen tank and welded that in.

 

If you use the stock type tank some kind of baffling, bucket or sump is a good idea to make sure fuel always stays around the pick up. Other wise you need to always keep the tank at least 1/4-1/3 full to allow for fuel slosh on accelleration, braking and cornering. Fuel starvation is a really bad thing. There are some other disadvantages to inline pumps, they are noisy, I know of one in a Gen II camaro that you can hear clearly over Flowmasters, they do not get cooling from being immersed in the fuel, I'm not sure how big of a deal that is, but it seems to be mentioned quite a bit. Some advantages are possibly cheaper, easier to get to if you have pump failure (see cooling comment above), and easier to set up.

You know as popular as these swaps are getting, I have to think one of the aftermarket companies like Year One will be offering an EFI tank pretty soon.

Good luck with it which ever way you go.

Pat

 

Classic, Detroit speed and rock valley offer FI tanks. Thet are 1200 without shipping. I was looking for soemthing that I could put together for less.

 

One question or bit of information that has not come up.. what are your target HP output going to be. This information may be of some help in helping you put together a fuel system (Tank, pumps, etc)

 

In the example in the sticky, does any body know wht sump or baffle is being used?

 

I am currently moding my factory 69 camaro tank,(Should look similar to yours ,I think) Also using the two line factory sending unit with 1/4 vent and 3/8 fuel line. I will be using the 3/8 line as the return as it will flow returned fuel to the bottom of the tank and towards the intank pump pick up. I have moved the sending unit over to the right in order to get the intank (walbro 340) closer to the middle of the tank. And I have cut custom full length baffels for the tank. I am taking pics of everything as I go and will post the transformation in a few days.
BTW, I am using the original tank (excellent condition) that I had cleaned at a radiator shop ($40).
Chris P

 

i can send you pics of what i did, and i did not put any extra baffles in the tank and have never had a problem. there is probably 2 or 3 gallons in my tank now

 

yes please send pics.....Horse power will be close to 450

 

I would like to see pics too. Why not just post them here for all to see and benifit from!!

The only reason I am putting baffels in mine is just for extra precaution not that you really need them (or for another answer...just because). It has been noted time and time again, no problems without them. There are a lot of ways to do one of these tanks. Just like the Tanks Inc guys use a rectanglular tray (internal sump) connected to the pump mast to hang on to some fuel, Rock valley puts a circular kinda spiral around theirs and Ricks is fully baffeled with a cilinder surrounding the pump (They make their own tank though.)

 

pics yet???


test

 

if you're looking for an ultra cheap method this is what I did.



I then used a piece of angle iron to mount the vette regulator/filter and walbro pump just behind the tank. I figure this'll work until I figure out a baffled/sump solution. Just hate to drop $1200 for a new tank.

 

if i could figure out how to i would. i can imail them to you if you send me your address by pm. im not real hi tech on this computer message stuff. might have to get my kid to show me.

 

pm sent

 

HUH? Is this is for an intank or external pump?