CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
Read this.

Basically the only real changes were adding an electric inline pump, directly after the selector valve, along with the supplied pre and post inline filters. My return side was rerouted down the back of the engine and bell housing and over to the frame from there. And thinking about that, it means that the factory hard line on the frame is now pressurized from the electric pump, where the stock mechanical pump would siphon from that hard line in the past.

Thinking that with the decent AFR's of the Fitech, it is likely that my EGT'S are slightly higher than the pig rich carb. I'm also using manifolds and a y-pipe from a 90 TBI burb, they may be different enough from my old headers and from the non-TBI exhaust that maybe the combination heats up that hard line as it sneaks by the shackle mount on the passenger front. Factory TBI trucks route the fuel lines up the bell to the back of the engine, not along the passenger front frame like the carb trucks.
 
So how did you make the transition from frame to engine? The factory lines on mine ran up the front of the engine behind the alt/water pump area.
 
Flex line right around the area of the bellhousing.
They did this into the 400s.. I would assume your diesel thingie is the same. Look at that.
 
Flex line right around the area of the bellhousing.
They did this into the 400s.. I would assume your diesel thingie is the same. Look at that.

That makes sense. I actually have enough hose that I could quite easily run it that way.
 
I basically kept the factory TBI fuel line routing. The braided lines run from the Sniper down the back of the motor to the hardlines on the frame rail which is about where the front of the transmission pan is but over on the frame rail. I ran the exhaust down the driver side crossing over under the bellhousing. The only place it's close is at the back of the motor. The braided lines are about 6" from the back of the headers. So far hasn't caused any problems but I've debated about putting some heat shield around them in that one spot just to be safe.

Part of what makes me think about it is wheeling in Moab at Blazer Bash ambient temps will be near 100 already so that doesn't help.
 
I basically kept the factory TBI fuel line routing. The braided lines run from the Sniper down the back of the motor to the hardlines on the frame rail which is about where the front of the transmission pan is but over on the frame rail. I ran the exhaust down the driver side crossing over under the bellhousing. The only place it's close is at the back of the motor. The braided lines are about 6" from the back of the headers. So far hasn't caused any problems but I've debated about putting some heat shield around them in that one spot just to be safe.

that's basically what I did too
 
A couple years ago I put a brand new fuel system in my big block. It had factory heat shielding on the stainless braided line running up the back of the trans.
Since I'm a cheap Fu©k I didn't want to spend 350 bucks on factory replacement braided stainless lines, so I used AN -6 line instead, but i made sure to put some heat shielding sleeves over the line.
Runs fine.
 
Last edited:
Just an update to what @Justin V said about the solid line, and to where @beags86 plumbed his 400:

I ran AN line from the rear crossmember up to appx the spring hanger, then over and up like the TBI line. Then also added a shield to the crossmember in addition to the factory shields.

Updates to follow pending outcome
 
I'm running the lines for the TBI in my 78 the exact way they were on the 89 burb. I actually just took this picture before cutting the ends off the lines if anyone is curious where they run.

IMG_1751.JPG
 
Top Bottom