ss.slp.ls1

iTrader: (36)

Yeah pretty much, that's all we did. If you look at the INJ fuse in your current fuse block you should see a main ign power feed wire (pink) that feeds ign voltage to the top three fuse spots in that fuse block. If I am not mistaken one of the fuse spots is unused. Simply pin in a wire that runs to the ign voltage for the second set of inj's and coils and you're good to go. But check all the diagrams of course.

02camaro

Do you think the wiring from your harnesses decribed would be the same as an 02 v6 to an 02 LS1? if not do you know where I could find out?

Jimbo1367

Great job and very informative write up

ss.slp.ls1

iTrader: (36)

Same concept, you have to run an additional wire for the Inj 2 Ign Voltage from the fuse block to the wire harness. That should get it to run. You'll have to refer to year specific diagrams for other misc wiring.

RobZ

Did you use the same gas tank?

ss.slp.ls1

iTrader: (36)

Yes, but either a Walbro or LS1 fuel pump was already installed in the stock fuel pump assembly. I don't remember exactly which. After swapping the fuel lines as pictured, we were good to go.

ZexGX

iTrader: (28)

Yep, I had previously installed an LS1 fuel pump bucket assembly from an 01 LS1. I believe there was an extra sensor on the LS1 bucket but I'm not 100% sure any more. The 01 LS1 pump+bucket worked with my V6 but the gas gauge wasn't especially accurate in the time it took for the gas level to update. It may have been due to different resistance levels between the 99/V6 pump and the 01/V8 pump.

pemberton

iTrader: (1)

What exactly did you have to do for the mechanical pedal. Because 99-02 Firebird were electronic. I saw you used the TCS/ASR cable. But did you have to run that cable all the way to the pedal? I am swaping this weekend. Found a 99 Corvette LS1 with only 28,000.

ss.slp.ls1

iTrader: (36)

We unbolted the old pedals, including the electonic accelerator pedal. Then we bolted in the manual pedals. Yes, we ran the throttle cable all the way to the manual accelarator pedal, just as if it was installed with a cable driven throttle body from the factory.

bigairboarder44

iTrader: (2)

Did you ever do this or figure out if its ok to do? I'd rather not have to run that pink wire all the way around...

ss.slp.ls1

iTrader: (36)

Which ever way you do it, make sure that it has it's own dedicated switched ignition power source with it's own 15amp fuse. Don't tap into another ignition power source that is already powering something else.

bigairboarder44

iTrader: (2)

So tapping into the EGR ignition wire is ok if I delete the EGR? I think I can jumper it to C100 G without a problem (EGR).

ss.slp.ls1

iTrader: (36)

That diagram says EGR/tranny, so no, I wouldn't do that (unless you have a manual trans).

bigairboarder44

iTrader: (2)

A T56 is going in so I should be ok, but I might run the pink wire around just to be safe. Thanks for the reply

ss.slp.ls1

iTrader: (36)

It doesn't have to be pink, you could run a black wire along the factory wiring and as long as you taped it to or ziptied it to the factory loom, it wouldn't stand out. We just used pink because it was what we had on hand.

bigairboarder44

iTrader: (2)

Lol yeah I know that but pink is much easier to see when pulling it out of that mess of wires.

bigairboarder44

iTrader: (2)

Ok, one more question. When you replaced the fuel pump, did you just replace the part in the tank? I was originally going to swap gas tanks, but I really don't feel like dropping the one in my bird.

fkncya

iTrader: (1)

Very nice work

dont z20h8

iTrader: (1)

im doing a swap from my 98 z to 98 v6 ive got the motor in and everything, i just need to figure out what im going to do with the fuel lines since i didnt keep mine from the Z but the Fuel INJ 2 pink wire confuses me can i get some help or can some 1 explain better mabie in a PM for a Newb

ss.slp.ls1

iTrader: (36)

Since you have a feed and return fuel system that needs to be converted to a feed only system, you can pick up a fuel filter/regulator for a 99 Corvette and figure out how to connect it. That will convert the 2 lines to 1.

As for the wiring, look at your current fuse block set up. One of the fuse blocks will have two spaces marked INJ1 and INJ2. INJ2 should be empty on one side of the pins (so if you were to stick a fuse in there, it would only connect to one side of the fuse). So what you have to do is get a specific pin that is supposed to go into that fuse block. Put the pin in the block on the other side of the INJ2 spot and run wire from the block over to the engine harness on the passenger side shock tower and connect it to the ingnition feed that powers up the second bank of coils and injectors of the v8 engine harness.