Fuel Tank

[elwaupo]

I'm converting my 69 camaro to efi and I'm getting everything together before I start. I'm installing an Edelbrock Pro-Flo EFI and have bought a Mallory "Dizzy" distributer. I have to run an electronic fuel pump and I know an intank is preferable, my question is can I convert my present fuel tank to an intank set up? I do have a return line already set up but will the stock fuel line work? Do I need to install a larger fuel line?

[Mr Nick]

I literally just went thru this decision making process. I have a brand new stock tank that I installed last year, with my carb. I'm converting to EFI now and also wanted an in-tank pump. I looked at the retrofit kit from Tanks Inc, and also the whole new tank with recessed mounting area for the pump.

Retrofit kit/pump module http://www.tanksinc.com/index.cfm/pa...prod/prd84.htm

New EFI ready tank http://www.tanksinc.com/index.cfm/pa...cat/cat153.htm

If you use the retrofit module, you may need to lower the tank or cut a hole in your trunk floor so the fittings on top of the tank clear the floor. For that reason, and the fact that I'd have to modify the tank myself and risk doing it wrong... I bought the new tank with recessed pump mount area, and matching Walbro 255 pump. The new tank isn't that much more, especially when you factor in the total cost of upgrading to EFI, and it's a great piece of mind thing for me. I can also probably sell my like new factory style tank and recoup some of the expense.

I got my tank, pump, and sender from Matt's Classic Bowtie's. Literally ordered it yesterday. I suggest checking them out, he can get you a price lower than what's on the Tanks Inc website, and his customer service is great.

I'm not sure what Edelbrock calls for with their system, but usually you want -6 supply and return (3/8"). If your current supply is 3/8" and your return is 5/16", then run a new supply line with the correct hose and use the factory 3/8" as your return, and you can remove the small factory return line. Just be careful because I don't think you're supposed to use factory hard line for the high pressure supply side, it's not rated for it.

[camrat68]

Just be careful because I don't think you're supposed to use factory hard line for the high pressure supply side, it's not rated for it.

Sorry to jack the thread, but I have an Edelbrock Pro-Flo2 35520 on my 68 and I was thinking of using two stock style stainless 3/8" lines from Classic Industries as feed and return. Now you have me wondering what pressure they're rated for? How can you find this info?

BTW- I'm currently using Russell black braided -6 lines for both feed and return and I do get a fuel smell when stored.

[Mr Nick]

Somebody else can probably give you specifics, but I think the issue is more the way the hard line attaches to the rubber hose, not the hard line itself. You can't just use a normal clamp like you would with a carb. If you were to flare the ends of the factory steel lines and use the correct fittings/adapters, you should be ok. But do your research first, since I'm running new flex lines, I didn't look into the proper way to re-use the factory lines very closely.

[parsonsj]

Be sure to consider a vaporworx system from Rick's. It's the best, most reliable system available.

http://www.rickstanks.com/vaporworks-tanks.php

[elwaupo]

The optional mounting add on from "Tanks" looks pretty easy if you have access to a certified welder (which I do). That would bring the cost down and be a better choice then running an external electric fuel pump. I have one but I don't know if they work well with this set up. Anyone have any feedback with external fuel pumps on the EFIs?

[Hammered]

I'm converting my 69 camaro to efi and I'm getting everything together before I start. I'm installing an Edelbrock Pro-Flo EFI and have bought a Mallory "Dizzy" distributer. I have to run an electronic fuel pump and I know an intank is preferable, my question is can I convert my present fuel tank to an intank set up? I do have a return line already set up but will the stock fuel line work? Do I need to install a larger fuel line?

Line size is more a function of horsepower requirements from what I've seen. I've listed what I've found here: http://1967firebird.atwebpages.com/efi1.php

Sorry to jack the thread, but I have an Edelbrock Pro-Flo2 35520 on my 68 and I was thinking of using two stock style stainless 3/8" lines from Classic Industries as feed and return. Now you have me wondering what pressure they're rated for? How can you find this info?

Any steel or SS line will handle typical EFI fuel pressures (45 psi). Make sure to get lines made from seamless tubing if you're going with flare fittings.

Somebody else can probably give you specifics, but I think the issue is more the way the hard line attaches to the rubber hose, not the hard line itself. You can't just use a normal clamp like you would with a carb. If you were to flare the ends of the factory steel lines and use the correct fittings/adapters, you should be ok. But do your research first, since I'm running new flex lines, I didn't look into the proper way to re-use the factory lines very closely.

Yes, the main concern is with the connections and what type of flexible hose is used. AN connections are popular because of decades of proven performance and the tools and fittings are most widely available. Do not rely on hose clamps.

[elwaupo]

Thanks Hammered, good and helpful advice

[parsonsj]

Any steel or SS line will handle typical EFI fuel pressures (45 psi).

As will aluminum, and it's what I prefer. It's easier to work, and flares and seals easily.