I am taking a 87 TPI car and swapping to a carb after there is no motor in it anyway.

I want to take th hard line and cut it and put a compression fitting on it back by the trans, then run it above the trans and engine by the firewall and mount the regulater where the ac and heater box used to be. My reason for doing this is i dont want rubber line, and i dont like it when line is ran from the driver side strut area clear over to the carb i think it jut looks ridiculous.

My questions are do you guys see any problem with this way of running fuel line?

Also what size is a good size hardline to run? Plan on buidling up a 400 sbc to about 400 to 450 horses and tq, with a t5 manual trans and 3:73 posi.

Thanks in advance.

 

The factory ran the carb V8 line over the transmission. I think it's a horrible idea - gets hot in there.

But, if looks are more important than performance, it's a great idea.

3/8" is plenty.

Assume you running the in-tank electric pump.

 

No i am running a holley blue electric pump With a mallory FPR mounted down by the tank and the FPR is gonna be on the firewall alone with a guage. What would be a good way to run it without running it straight across the engine. How are most of you guys going from TPI or TBI converting to carb running yours? or you guys with mechanical fuel pump how are you gettin your lines down the the pump?

I dont want to hurt performance thats why i was askin how alot of people do it so i can do it right.

Thanks

 

3/8" is the size

any bigger is pointless because factory used 3/8"

and the pump is 3/8" and the inlet in the carb, and so on


tubing is cheap you can buy sticks of it for a few bucks and its easy to bend and double flare the double flaring kit is only 15 bucks


route it so it is away from moving parts and exhaust

and you will be good to go

good luck

 

I took mine from the frame rail where it came up on the driver's side, routed it along the front of the cross member, over to the mechanical pump. You could do the same and put the reg on the strut tower on the passenger side, which is the side where the carb inlet is.

I've had mine there for almost 8 years, no issues at all. A much cooler location as well.

 

You guys think it would get to hott if i did it this way.

cut the stock fuel line down on the frame by the brake booster, use a compression fitting to tie into another 3.8 hard line then straight up the firewall all the way up to were the lip is for the wiper cowl, and then run it across up under the lip over to were the heater a/c box used to be and now is smooth. and then into the regulator which is over there...

All along it will be held down with the fuel line rubber clamp things summit sells.

Anyone see any problems with this? I figure it will be hidden and outta the way that way.

You dont think it will get to hott do you?

Thanks

 

1/2" aluminum line minimum or -8 AN stainless braided lines if you can afford them. The stock lines are too small.

The best way is to sump the tank and re-pipe from there. You can opt for a external electric pump, mounted near the tank or a traditional high volume mechanical pump which runs off the camshaft.

 

1/2" line for 450 horse is overkill. 3/8" is plenty.

 

Your wrong. To avoid fuel starvation propblems at WOT.
450hp needs -8AN or 1/2 from tank to regulator and -6 or 3/8 from regulator to carb bowls.

Then what if he decides to go faster? I suppose he will have to redo his fuel system then. Might as well do it right the first time.

To each his own...

 

Wow, to think that I must've had fuel starvation issues all this time and never knew it.

3/8" will be fine. No harm using something bigger, but it's a pain to work with.

 

450 HP is a major hurt to a T5.

Up the firewall and under the cowl lip shouldn't be a problem. Aluminum line is really easy to work and gives a clean look.

 

I think you should take five7's advise. If you are going to run headers that firewall will get real hot and running the 3/8" line to crossmember will be a real cool place for the fuel line. The blue pump is around 14 psi and needs a FPR so I use a Holly red pump thats around 5 psi. I removed the pressure relife valve spring and shimmed it to around 7 to 8 psi when I hit the button. The elect. pump only runs when I use the NOS. I use a stock 84 L69 pump (4 to 6#) for normal driving. I also use 3/8" fuel line and I have around 460 HP on the juice. 3/8" line is plenty with the right pressures.

Auggie

 

thats why i said i was gonna upgrade to a t56 here soon. I just cant get it all at once, i am on a budget.

 

Heres some pics of it partially done.

also with malllory regualtor with a return line out the bottom of it. now that im running a carb and dont really need a return line can i just block that off or will it effect something.

Thanks comments or suggestions welcome.

 

You need the return line with that regulator, otherwise the fuel is going to have nowhere to go when the bypass opens up, and you're going to have full pump pressure delivered to the carb.

 

Forgot to ask: Did you take out the stock in-tank electric pump?

 

Yes the intake pump is gone. It was a carbed setup before i bought it, I just wanted to build my own so i bought it as a roller and wanted to clean up the engine bay and make the lines look cleaner before i put the motor in...