Hi! I've got a '93 Caprice 9C1 with a 350 [5.7L] LO5 TBI and I'm looking at putting an inline fuel pressure gauge in.

Problem I have is that there are steel lines leading to and from the TBI. They travel to the front of the engine, and drop down, angling apparently to the passenger side.

While I haven't taken a good look to see if I can tie into a rubber line further back, has anyone hooked a gauge up to the steel line before?

Looking for suggestions and 'been there, done that' help.

Thanks!

 

Can't help with the pressure gauge, but I also have a LO5 Caprice. But mine is a boxy 1989.

 

If it's like the Camaro's you won't find any rubber lines no matter how far back you go. You'll have to cut the steel line and put a t-fitting in there somewhere.

 

http://www.transamtemple.com/images/...0/FPgauge1.jpg

There are flexible lines that fit into the hard lines.

 

might be a stupid question but why do people run installation like that one there fuel lines too keep them cool? hey you learn something every day here and there is always something out there that you have not learned yet

 

I did that because the metal lines sit directly on top of the intake manifold soaking up all the heat, thereby heating up your fuel charge. The cooler you keep your fuel/air mix the denser it'll be - the better it is for power. Did it help, I dunno. Did it take anything to rig it up? Nope. Might it help a little bit with all the other mods? Yeah, it might.

Steve

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Steve's Trans Am Temple

 

First of all, I gotta thank you guys for answering a question from a total new comer...not even a ThirdGen owner, to boot!

Couple new questions...

With regard to cutting the steel lines - how difficult a task is this going to be? Other than right at the TBI itself, I'm unsure where these lines are gonna terminate. As well, the sending & return lines sit right on top of each other.

Regarding the flexible lines...are you speaking of cutting the steel line, flaring the ends, putting in a rubber line where the barbed FP adapter can sit and clamping the ends?

Thanks again, guys!

 

Just an update...with regard to the fuel lines, they terminate and mate up with another set of lines, in front of the block, psgr side, towards the bottom. They appear to join with GM's 'Quick Connect' fitting, which apparently I'll need a special 'separator' tool...we'll see

Plan now is to figure out a spot where the gauge can be read and not interfere with any moving parts; figure out how much of the steel line I can cut & remove; cut the line & flare both ends. [I'm assuming this won't be like hydraulic lines that require special flares?]

Take a rubber fuel line, slide it over the flare & tighten a clamp over it. Slide the barbed adapter for the gauge in & clamp it, then finish the other side the same way.

Max pressure here should be 16 PSI or less.

Does this seem prudent?