Flexible lines to engine, and Fuel-filter for high-pressure fuel system?
 

I'm putting a '95 LT1 in my '69 Chevelle, and I'm new at this whole Fuel Injection thing.

I've bent up 3/8" supply and 1/4" return steel lines to run along the frame rail, but I don't know what to do when I get to the engine. It's pretty high pressure, compared to a carbed car, so I assume I can't just stick a neoprene hose with a clamp on each end... or would that be kosher?

Also, what can I use for a fuel filter if I can't use hoses and clamps?

You DON'T want to use hose clamps with high pressure fuel injection. It's not that it can't be done, but if they ever leak, or the hose gets brittle and cracks...major meltdown. You will have to flare the tube ends and use the proper fittings. You can get a threaded fuel filter at any auto parts store. Just get one for a late model factory fuel injected vehicle.

Can I run a solid line to the engine? or do I need something flexible? It will be a few feet of lines with several bends from the frame to the fuel-rail, so I think it will flex enough, but I'd like to do it right if there's a better way.

There should be enough flex in the line as long as it not secured too close together. It goes without saying your motor mounts have to be in good shape too.

Brand new Polyurethane mounts :)

Thanks for the help, I was afraid I'd have to buy some expensive braided lines, and my budget can't take much more abuse :lol:

AN fittings are your friend in this case, just remember that they use a single 37* flare. dont cheap out on the hose either, good steel braid hose is rated at 300psi min, not a problem with your 60 or so psi from the efi pump

If you run hard line to the engine, put a coil in the line. The extra line gives it some flexibilty. We have done this for years on vintage aircraft. The other thing to do is to make up steel braided lines with high pressure fittings on each end.

Mike

Yep, what Mike said. I don't care how stout your motor mounts are, without some room in the lines for deflection you're asking for trouble sometime down the road, Derek.

Thanks for the help. :thumbsup:

What cars had a filter I could use? All the later model cars have the plastic lines that clip together, so I'd assume I need to look for something in the 80s that would have still used steel lines, and had fuel-injection.

Fuel filter
 

Derek, you can use a LT1 F-body fuel filter. All you need is AN6-16mm oring adapters (2) to plumb it into your system like these #5100 http://www.performanceplumbing.com/FuelPieces.html . I have also seen them locally at a napa autoparts store. If you are looking for some bling, S&P has a nice filter bracket setup. For a more cost effective route, just get one from your local parts store and fab some brackets. I have mine mounted near the gas tank. Hope this helps you.

Yes, it does - THANKS! :thumbsup:

I'll mount the filter in the rear by the tank, and use all hard-lines there too, so if I need for any reason to drop the tank, I just have to detach the line from the filter, and the one going back to the pump can just come out with the tank. :)

for my lt1 iam using this set up but iam running bradied line from my tank to the fuel rails it may cost a lil more but in the long run it will save u and also it looks very clean. if u dont go with a fairwall mounted fpr they make a kit u can put fittings on the old lt1 style regulator that will allow u to run AN fittings i will try a look for that site.

I'm keeping the stock regulator for now... I was planning just to cut and flare the stock lines - bad idea???

Thanks for the help :)

Even easier and more simple is to get a fuel tank from a 95-96 (late model Caprice) and install it in your car. It has the pump built in. Then, use the factory stock plastic Caprice/Impala fuel lines from the tank to your motor. This is how I plumbed my 69 Camaro. Works great, is safe, reliable, and easy to hook up without having to mix up all kinds of aftermarket connections, etc.

It's about 1/4" too wide to fit between the Chevelle rear frame :mad:

You can use a heat gun to reshape the tank. If you only need 1/4", you could easily heat the tank and apply pressure until it rolls in a tad on each side.