94 Lifted Silverado 6.0/4L80e swap Build

[HPICamaroSS]

More updates. CAI is on. Doesn't fit perfect (hits rear housing of headlight and inner fender), but I guess that keeps it snug right lol because I dont have it actually mounted to anything. I also modified my old passenger side battery tray to hold my ecm on top of the inner fender well. I just drilled the spot welds off and took the support bracket off so its just an actual tray. Then this weekend I am going to get some metal straps and figure out a way to hold the ecm down, whether its bolting it down so its snug, or a clamp style like one of those portable tool boxes where u hook it around then press down to snug it. Other concern was my dipstick hitting my headers and the original bolt that bolted the dipstick to the head doesnt work with the pacesetter headers. SO, i drilled the 3 little spots welds on the dipstick bracket and took it completley off and I am going to reweld it on the dipstick this weekend so it bolts to a difference hole on the head. now thats thinkin' with yer dipstick!

[HPICamaroSS]

Heres another way to hook up your coolant temp sensor to make your gauge work. I'd like to give thanks to my neighbor Chris for helping me with the wiring. If you are trying to avoid buying the stupid adapters (that are always the wrong size) for your coolant temp sensor, Buy the following:

(1) Coolant temp sensor for a 98 FIREBIRD (NOT THE CAMARO, THEY ARE DIFFERENT) with the v8 ls1. MAKE SURE IT IS THE 3 PRONG SENSOR! Its only 8 bucks.

(1) Coolant temp sensor PIG TAIL CONNECTOR for a 98 camaro v8 ls1. AGAIN MAKE SURE IT IS THE 3 PRONG.

then all you do is screw the sensor into your motor, cut your old 2 wire connector off (yellow and black wires) and attach the new connector that you just bought. And yes you will have one extra wire, thats what you hook your gauge up to, IF it was the old 1 wire style like mine.

[RedHeartbeat]

Get yourself a laser temp gauge and measure the actual water temp, it will be way off with the 98 sensor. BTW, WTH are you getting a 98 model Camaro water temp sensor for $8? IIRC I paid about $50 more than that for mine when I tried that.

[HPICamaroSS]

Get yourself a laser temp gauge and measure the actual water temp, it will be way off with the 98 sensor. BTW, WTH are you getting a 98 model Camaro water temp sensor for $8? IIRC I paid about $50 more than that for mine when I tried that.

Lol I got it at napa and there was a small discount through my work I think it was listed at 18 or so but even for reg customers with no acc there is usially a little disc. I figured my gauge would be off bc the resistance differences bit my gauge was always off to bein with it would show 120 at 180

[HPICamaroSS]

Getting really close! Old harness is in, tried to crank it over and I have a few issues. The starter is jamming up against the fly wheel. When you turn the key, the starter gear shoots out and goes into the flywheel teeth, but its jamming and not releasing which is weird because the msd starter i bought is considered non shimable so it should work just fine. Other problems are NO BRAKE LIGHTS!?!?!?! I dont get that. My blinkers flash really fast. But my tail lights work. And when I turn on my heater blower motor, it clicks really fast and lights flicker. I love electrical. Not. Ill post updated pics soon. Also modified the dipstick tube so it can be used with my headers, and made a sweet ecm hold down tray.

[HPICamaroSS]

Got a lot done tonight, most of the problems fixed. Fuel pump is hot and running, blinkers are good now and blinking normally, fan blower motor operates normally. I am pretty sure it was a big ground problem, i went through all my grounds and made sure they were clean/bare metal and it seemed to fix everything.

[HPICamaroSS]

Fired up thee ole turd last night for the first time. Started right up and runs smooth with no surging. THANKS NELSON PERFORMANCE! I let it run for probably a minute with the open headers and noticed the oil cooler lines right at the radiator were leaking, but its not coming out of the threads, its coming out of where the lines go into the connector that threads into the radiator. So I will be buying a block off plate because I hate running those cooler lines to begin with. They always seem to leak, get kinked, and are always in the way. I believe the GM part # is 12577903 for the block off plate. I also realized that my brake booster still needs to be hooked up and has no port on the back of the motor (yet) to run a hose from the intake to the booster because my LS motor was hydroboost. So I will also have to pop out that plug on the back of the intake and replace it with a nipple that I think is GM part #12559760.

[HPICamaroSS]

Heres some pics if anyone is looking for how I did things.

The first pic is the green/blue wire. If you wire your coolant temp like I did, this is the signal wire to your gauge. The green wire is the old obs harness wire, the blue is part of the 3 wire (98 firebird) pigtail.

Second pic- Coolant temp sensor with the 2 remaining wires. I had to cut nelsons 2 wire connector off (yellow and brn i think). Then you hook up the new 98 firebird wires to it. I think gray goes to yellow. and blk goes to brn. Ask me if you need help so I can 100% confirm it.

Third Pic of the rear part of alt. I had my old OBS wire running to it for the gauge, and I have the new LS harness lead running to it as well.

4th pic- Power junction block on firewall. I have the fuel pump running off this with some others including power from the starter lead running up to it, and my subs.

5th pic- Just a pic of where I mounted my OBDII port. It has a really bright LED light on it, so I put it basically lined up with the 4wd shifter so its not blinding anyone when the SES light is on.

To be continued.....(only lets you upload 5 pics at a time)

[HPICamaroSS]

6th- just a pic showing you a good spot for a tach since you will need one that goes to a higher RPM with these newer LS motors. Since the obs cluster only goes to 4500 lol.

7th pic- This is how I am holding down my ECM on the pass wheel well. I used my old drivers side battery tray by cutting off the support bracket so its just a flat tray. THen I got a 1" wide by about 10" long stainless strap from my buddies work and welded one side of the strap to the bottom of the tray, and then the otherside I drilled a hole and welded a nut to the tray. Bent up the strap to fit snug around the ecm, and then you just snug it down.

8th- Also had to modify the dipstick because the headers were in the way. I basically just relocated the bracket by drilling the 3 spots welds, and welding it on a different location to push it a little bit forward and keep it off the header

[RedHeartbeat]

what is that brown wire you have going to the power lug on the alternator for?