so i have a few questions i just pulled the 305 and have my 350 in just hooking up everything. what will i use from the old harness i plan on hooking up a oil pres and water temp gauge thats not factory (waiting on them to arrive) i have a new vacuum advance dist. and a eldobrock 1406. everything has went smooth till i got to the wiring witch im sure is a simple thing just needing some help and advice.

 

Why not use the factory carb, distributor and have it run better, maintain wiring and get better MPG?

 

because its a built up 350 and smog and emissions will not be needed plus i done have all the parts and its not going to be a daily driven car

 

Get a wiring diagram (plenty on here) and trace out the wires that you need (oil pressure, temp, tach, ignition, etc.), which won't be many. The unused you can either leave unplugged and tuck away or, for an even cleaner job, trace back and remove completely.

 

Thats too bad you don't have the factory carb and distributor it would run that built 350 way better than the 1406 could ever hope to. Most of the factory gauges are one wire deals just attach to a sensor. Nothing all that different from a 305 to 350. Get the sensor put in the hole attach the wire life will be good. I think Dark Green is temp and brown is oil pressure.

You can download wiring diagrams here http://www.austinthirdgen.org/?pid=19

 

so is my bran new 1406 that bad? or should i sink money into the wore out factory 305 carb? and thanks for the diagram wiring is all thats left that i need to do and from what i can tell all im going to be using from the old harness is alt wires starter wires dist wire and run new stuff for my gauges because car just has the light on the dash and a speedo no temp tac or oil

 

The 1406 is edelbrocks basic tuned for MPG 600 cfm carb designed in the 50s it does the job and most people just bolt on and go. You will most likely have to change rods and jets based on the motor you swap in. A wide band O2 setup with a vac gauge will help you tune it right. The Q jet is 750CFM and has smaller primaries that help low throttle driving. Its really up to you. One will allow the computer to control timing and mixture the other is all manual setup with a specified curve that when tuned right may still not be as good.

 

okk i see thanks for the info! i got the carb like 3 years ago off a recommendation been saving and buying parts for this swap for about 5-6 years just got the motor finally done this month with a bigger cam .60 pistons i believe. and dart heads. plan on going with efi at some point car is not a daily driver just a fun toy. just needing some guidance on wiring. and i think i got that mostly figured out now

 

The best thing I did to my car was ditching the tuned edelbrock and going EFI. If you plan on doing that soon just run the edelbrock, tune it and then EFI next year.