Few EFI to Carb Questions...

[Wasim05]

so decision is made, im 100% im going carb'd. anyways, selling the harness to a fellow member. question is, will my gauges still work, i plan on going aftermarket oil press/water temp gauges later, but for now will they work. arent there 2 harnesses, one for engine (maf, etc) and the other electrical (gauges, lights, etc)??? also, I know I need a different distributor/coil... a non-tfi right? also, i know i can use a stock efi fuel pump as long as i use a inline regulator to turn the psi down to say 3-5psi instead of ~40psi? But who makes one? and where can i get it? and how much bigger of fuel lines do i need? I would like t go braided steel, but thats $$$.. if not, what size? and where can i get them from? also, 1 more question, what about the throttle cable? is there some sort of bracket i can bolt it to and where can i get it from? also, 1 more question, what about the throttle cable? is there some sort of bracket i can bolt it to and where can i get it from?

 

[Boss 351]

You won't need bigger fuel lines until you start pushing over 300HP. I just got an inline Holley fuel pump used for $40 CAD (around 28 bucks for you USA folks). I removed the stock pump and replaced it with a pickup tube, right into the rubber hose that was over the in-tank pump. I used the bigger stock "feed" line and removed the smaller "return" line. All you need is 6psi.

I "think" the guage wires come from the computer harness but I'm not sure, I took the car apart last year and can't seem to remember. But you may be right, the harness from the driver side has all the oil and temp guage wires??? I just went ahead and got the guages right away. BTW volts still works with all the wires pulled out from under the hood lol

I got a throttle cable and bracket from a 1985 3.8L V6 Cougar. I machined the bracket and made my own support for it to work with the damn air gap intake which seats the carb pretty high. You can just buy a bracket that will bolt the carb studs and be done with it but it was pretty expensive IMO.

I guess you know about the distributer and ignition upgrades that need to be done?

 

[pocket3799]

Check out this page: http://www.jason.fletcher.net/tech/efi-carb/efi-carb.htm

 

[dastang2]

if you are going to use the stock efi pump and an inline fuel regulator, DO NOT get just a regular "dead head" regulator. get one that has a return port on it. otherwise, you are cutting 40 psi down to 6 and your pump and regulator may be damaged. if i was you i would do the HEI ignition swap. it is easy and you don't have a big module to put under the hood, like duraspark. i have the info so i can send it to you.