when i ask a thing like this people usually say search for it and i have a few times and nothign really comes up for wut i need.


i have an 85 SC and it was the fuel injected 2.8 but now is a carbed 350. i was wondering wut electrical needs to be hook up in order for this thing to run and scream down the road. so far all i no is the alternater, starter, tcc, and cooling fans have to be hooked up. is that it?

which sensers do i HAVE to have?

anything to my computer?

all i need is the electrical figured out and i can drive it !! so if u guys can help, thatd be awesome

you need the water temp and oil pressure senders. You may have to do something with the fuel pump and it's wiring and you need power to the coil

temp, oil, ignition, starter, alt, fan, TC, possibly choke, etc.

dont touch the fuel pump/fuel guage wiring....going from a 2.8 to v8 has nothing todo with it

is anything on you car computer controlled any more?

wouldn't the fuel pump put out too much pressure? Would the pump even come on until there was oil pressure?

you buy a adjustable fuel pressure regulator with a return line to the tank so your pump isnt even affected by the v8 swap.

what about the oil pressure switch?

i dont think so.

i was just going to leave the fuel pump in the tank and then i was gonna run a mechanical on the block and run the gas through that. my co- worker said that should be alright.


pskel350 wuts a TC ? u mean the tcc?

That isn't going to work. I was going to do the same thing, but I was told it would not work. You have a couple of options on what to do. You can either get a carb car's sending unit or you can remove the fuel pump and put a union to extend the fuel line to the bottom of the tank. It might sound a little harder than it actually is, but trust me, it will be worth it once it is done.

Be careful when giving bogus info...alot of fuel systems need to be modified after this swap..some pums will run some wont,

or if you pump only primes, wich was my case you can hard wire it to a keyed source. but be safe and use a oil pressure swith also
and yes you will need a 3 port regulater..I used a malory 80.00
At www.summitracing.com

Thankyou

Your Welcome! thats one of the issues that makes these (v6 v8)swaps tough. there are soooomany variables. I got rid of all the ecm and the wiring..I think I have about 7 wires to connect and Im ready to run....but mine wont be on the streets.....well maybe a few times...
Here the track car.

town car

if your going to run a mechanical pump then you better drop that tank down and pull the pump, extend the pickup and put the tank back in the car. while your under the car, pull the fuel filter out and put a strait line in there. the mechanical will not pull the fuel through all that stuff. remember, fuel filters are push through, not pull through, so you will need a fuel filter up by the motor after the fuel pump. i know this first hand. i did the swap and could not figure out why the motor wouldn't run for more then 200 feet. did above mentioned, and it worked great.

you shouldnt have to mess with the wiring at all....i've never had to for a v8 swap where i kept the intake pump working. and those were an a 86 and 91 3rd gens.

what years do you have to change the wiring

My 89 for sure..and a lot of other years...after the swap,The pump will just prime, then stop...ive talked to a lot of people about this issue...Some intank pumps will run and some will only prime..like mine....
also people have tried to syphone through the intank pump with a mechanical, or an inline pump. again some worked others didnt. I had to splice into the wires behind the backseat. and run into a keyed source, for the pump to work properly. Now I did all my wiring using the v6 wirig harness..that might be the difference

i am using v6 harness as well, i think im gonns run an adjustable regualter and leave the pump in the tank alone. i have a inline fuel filter, should i run the same one i have in there right now? or just rip it out and put in the inline?


sound good to any of u ?

I kept my filter in the stock position.......then I put a small inline before the regulator......you will need a inline pressure gauge, after the regulator and before the carb,,,real cheap around $7
you want to run 5-7lbs with a carb.

can i see a picture of some of ur guy's regulaters?


so if i run a regulater with a line to the tank, thats all i have to do for the fuel pump?

I could but right now the motor is out waiting for the 406 to go in..within 2 weeks...if you still need I could then....I ve seen some good pics on this sight..maybe search adjustable fuel pressure regulater and some might come up..let me know .....its real simple

I am looking into doing the swap too .... can i keep my stock fuel pump ? can i keep stock wireing harness ? ... If i keep stock wireing harness won't the car be throwing up check engine lights and **** because there not plugged in ....?

yea ill still need them please :hail: :hail: :hail:

u can keep ur stock one but, u have run a regualter. to much PSI and GPH . idk ab out the check engine light question. makes sense but i member someone ask that question a long time a go. search it mayb

Ok Fellas...Iwill be starting on the car hopefully by next sun mon...I will keep you posted with pics and info as I go...im doing alot, check my sig..
Hey check five sevens sticky at the top of the board he can help alot also.

second thought ...i. cant show you piccs of the regulator setup..Im going with a fuel cell and electric pump;;;
but I may be setting it up with the in line and carb so I can still have a return...I can take pics of the fuel hardlines with send and receive marked,pics of stock mounts in v-8 position...for now..

no thanks riley. im doing pretty good now . my motor is almost all the way hooked up . still gotta decide how im gonna go with for the fuel pump. well and some electrical. nothing i cant handle

Hey thats great! It cn be done ...its not impossible..just plan alot of thought time ..right? Good for you. Shoot me a pic when you get done if you can!
But I will keep pics posted on my progress!!

here it is!!! if it works

Try again,,you may need to make the file smaller