LQ4 into a 3rd Gen/1972 Nova
Props for being a car builder and not just racking up a credit card with the latest and greatest. These types of builds is what makes me want to just go out in the garage and fab something.
Agreed. I can't afford to pay someone to build my cars and parts so I have to build my own.
Launching!
Joined: Jan 2011
Posts: 200
Likes: 0
From: Arizona
LS1NOVA- Props for being a car builder and not just racking up a credit card with the latest and greatest. These types of builds is what makes me want to just go out in the garage and fab something.
Thread Starter
Joined: May 2007
Posts: 1,806
Likes: 46
From: Vancouver BC, Canada
Wastegate dump pipe flange, the final missing piece that was needed for me to finish up all the turbo piping. Tapered hole to go to a larger 1.75" pipe that will merge back into the turbo downpipe..
I did the same thing! Made my own O2 bungs, IAT bung, turbo oil drain flange and bung....you add that stuff up at $10 a piece or so, your taking $50+ bucks! Probably only took me about 10 minutes a piece for each...but I have an engine lathe and very nice high speed steel taps from when I was a machinist.
Also, usually when you buy something that was tapped, Ive always had to re-tap pipe threads. A lot of times, they will only engage the first three threads....not even hit the sealing tapper that a pipe thread is meant to have!
Also, usually when you buy something that was tapped, Ive always had to re-tap pipe threads. A lot of times, they will only engage the first three threads....not even hit the sealing tapper that a pipe thread is meant to have!
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Never buy something you can make unless time is a restraint. Great work!!! I do have a question for you, why are you using the downstream O2 sensors? Are you running all four sensors with cats? The reason I am asking is I had a guy rewire my harness and he deleted the second bank of O2 sensors so I am only using the upstream sensors.
Thread Starter
Joined: May 2007
Posts: 1,806
Likes: 46
From: Vancouver BC, Canada
Never buy something you can make unless time is a restraint. Great work!!! I do have a question for you, why are you using the downstream O2 sensors? Are you running all four sensors with cats? The reason I am asking is I had a guy rewire my harness and he deleted the second bank of O2 sensors so I am only using the upstream sensors.
The LS3 exhaust manifolds came with threaded holes for O2 sensors, but since mine are flipped upside down, this puts the sensors right at the 6-o'clock position aka the lowest point in the hotside piping... not the best since the sensors will get soaked in any moisture in the system each time the engine is turned off and the exhaust hotside pipes cool down!
I deleted the post-cat stuff in the computer, these bungs are for just two O2 sensors, one in each bank's hotside piping, just after the exhaust manifolds, at the 3-o'clock orientation, for the PCM. There will be a third O2 sensor bung in the turbo downpipe for a wideband sensor & AFR gauge.
The LS3 exhaust manifolds came with threaded holes for O2 sensors, but since mine are flipped upside down, this puts the sensors right at the 6-o'clock position aka the lowest point in the hotside piping... not the best since the sensors will get soaked in any moisture in the system each time the engine is turned off and the exhaust hotside pipes cool down!
The LS3 exhaust manifolds came with threaded holes for O2 sensors, but since mine are flipped upside down, this puts the sensors right at the 6-o'clock position aka the lowest point in the hotside piping... not the best since the sensors will get soaked in any moisture in the system each time the engine is turned off and the exhaust hotside pipes cool down!
Thread Starter
Joined: May 2007
Posts: 1,806
Likes: 46
From: Vancouver BC, Canada
They're post-cat C5 sensors, which have the longest pigtail I could find for the headers I originally created. They are the only two sensors ("pre-cat") that the PCM interacts with.
Thread Starter
Joined: May 2007
Posts: 1,806
Likes: 46
From: Vancouver BC, Canada
Good timing, I got something for ya... Haven't bothered updating because this entire week for about 3-4hours after work each night it's been the boring, bitchy, shitty, annoying work of making patch panels and welding up all the floorpan/firewall, but as of tonight it's all done! Just need to spend a couple minutes grinding the firewall a bit and then paint everything... about damn time in my opinion.
I couldn't resist mocking up the pedals even before I finished welding the backing plate into the firewall.
I've been wondering if all this effort will be worth it, and you all probably think this is extreme, but with my size 13 feet I've never found a car that I could heel-toe in because of the trans tunnel, not to mention the stock Nova pedals were way too far out from the firewall making my long legs feel cramped. Anyways it was totally worth it! all pedals are exactly where I want them, laterally, vertically, and depth-wise
Also when it gets too late out to make noise I've been re-working the wiring in the car, eliminating all those useless buzzers, sensors, and idiot warning lights, as well as making sure the wires are safe and also wiring in connectors for the new gauges.
Before:
Are all these really necessary??
Apparently not...
Simplified interior side of the wiring harness...
I couldn't resist mocking up the pedals even before I finished welding the backing plate into the firewall.
I've been wondering if all this effort will be worth it, and you all probably think this is extreme, but with my size 13 feet I've never found a car that I could heel-toe in because of the trans tunnel, not to mention the stock Nova pedals were way too far out from the firewall making my long legs feel cramped. Anyways it was totally worth it! all pedals are exactly where I want them, laterally, vertically, and depth-wise
Also when it gets too late out to make noise I've been re-working the wiring in the car, eliminating all those useless buzzers, sensors, and idiot warning lights, as well as making sure the wires are safe and also wiring in connectors for the new gauges.
Before:
Are all these really necessary??
Apparently not...
Simplified interior side of the wiring harness...
Thread Starter
Joined: May 2007
Posts: 1,806
Likes: 46
From: Vancouver BC, Canada
Not quite finished yet hence no shot, still have to grind welds flat then spray paint it black, but will update when I finish that.. hopefully tomorrow.
Thread Starter
Joined: May 2007
Posts: 1,806
Likes: 46
From: Vancouver BC, Canada
The firewall doesn't look fantastic, but I think it looks slightly "less bad" than it did before, just seam sealed the welds for the new plate so it ends up looking "factoryish", and the flash really exaggerates the seam sealer making it look horrible in pics...
Just plumbed fronts for now...
Just plumbed fronts for now...
Last edited by frojoe; Jun 26, 2011 at 01:49 AM.