Iroc LQ4, S480 turbo build
07-10-2012, 09:01 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
The TurboMu11et LQ4 S480 Build
Thought I'd show you guys how to stuff one of these massive turbo's in the engine bay without cutting out the core support. Trust me, it fits (snug)
The radiator is a griffin core 31x16, core support is stock, uncut. The turbo has about 1" on each side (radiator to water pump)
1" setback plates, stock engine mounts.
The radiator is a griffin core 31x16, core support is stock, uncut. The turbo has about 1" on each side (radiator to water pump)
1" setback plates, stock engine mounts.
Last edited by shawnc16; 08-04-2015 at 02:12 PM.
07-11-2012, 09:05 AM
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Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: Iroc LQ4, S480 turbo build
Ohnose, not another boosted LS
LOL
LOL
07-11-2012, 10:59 AM
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07-14-2012, 05:15 PM
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Re: Iroc LQ4, S480 turbo build
One guy made 770 RWHP with a 4.8, spinning 7700. Just ARP bolts and a small cam.
07-18-2012, 09:51 PM
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Car: 92 25th anv z28
Engine: 346 TC78 Turbo
Transmission: 4L80E
Axle/Gears: 3.25 9"Nodular, Strange axles
Re: Iroc LQ4, S480 turbo build
Wow. I thought I was going to have a hard time mounting my lil TC78 there... No you'll have a hard time! Thats tight!
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08-28-2012, 10:13 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Progress. Slow but the ball is rolling!
More pics in the album:
http://s30.photobucket.com/albums/c3...Turbo%20Build/
More pics in the album:
http://s30.photobucket.com/albums/c3...Turbo%20Build/
08-29-2012, 06:31 AM
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Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: Iroc LQ4, S480 turbo build
Very nice, I want to turbo something, just not easy with the tight fit in our cars. Keep up the good work.
08-29-2012, 09:13 AM
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Re: Iroc LQ4, S480 turbo build
Suscribed! How you planning on getting the belt on and off?
09-07-2012, 04:19 PM
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Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: Iroc LQ4, S480 turbo build
WOW! that turbo is huge! if im having trouble fitting my small turbo lol
09-30-2012, 08:57 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Finally got em finished up this weekend. 
Last edited by shawnc16; 10-06-2012 at 05:55 PM.
10-13-2012, 05:55 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Did some clocking of the turbo and found its final resting spot.
It should go about 3" lower without the board in there.
It should go about 3" lower without the board in there.
10-13-2012, 05:57 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Also finishing up my fuel system minus one fitting. For whatever reason one fitting had no threads.
10-14-2012, 01:05 AM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Actually it's not as bad as I had originally thought. There's enough room to tweak it if I need to.
10-14-2012, 01:29 AM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
The radiator is in there, right where the a/c condenser used to be. The manifolds are sch. 10 pipe
10-14-2012, 01:43 AM
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Car: 91Z28
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Re: Iroc LQ4, S480 turbo build
Oh okay, can't wait to see it done then. Im also doing a turbo 4.8 and cant even fit my t76 lol
10-14-2012, 01:46 AM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
This is a massive turbo (weighs 45 lbs.) you should have no issue with a smaller unit. Rear mount battery and play around with the clocking of the turbo.
10-14-2012, 02:00 AM
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Car: 91Z28
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Axle/Gears: 3.42
Re: Iroc LQ4, S480 turbo build
yeah well the guy i bought the car off had a t76 godspeed so i bought a t76 turbonetics but won't fit.. giving me headaches now
10-19-2012, 09:17 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Thought I'd spice up the thread a little bit with some more pictures.
The car
Engine build
Also did the twin intank pump treatment. I had a walbro already so I strapped an aeromotive stealth 340 to it. The 340 will kick on with a hobbs switch.
The car
Engine build
Also did the twin intank pump treatment. I had a walbro already so I strapped an aeromotive stealth 340 to it. The 340 will kick on with a hobbs switch.
Last edited by shawnc16; 10-19-2012 at 09:23 PM.
10-19-2012, 10:15 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
I think it fits pretty decent if you cut the flange off and weld on a v band. The passenger side wasn't good at all. That's why I opted to build a set to make it symmetrical.
10-22-2012, 02:30 PM
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Car: 1986 Camaro
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Transmission: Tick Stage 2 T56
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Re: Iroc LQ4, S480 turbo build
Nice! Im doing a 5.3 turbo, T56 swap on my 87 IROC. Can you post up some interior pics as well? Just curious what you got going on in there with the cage.
10-22-2012, 02:33 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
I don't have too many pics of the interior. I'm going with kirkey pro drags
10-22-2012, 02:39 PM
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Car: 1986 Camaro
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Transmission: Tick Stage 2 T56
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Re: Iroc LQ4, S480 turbo build
Keeping a drag seat in the passenger side? I have a set of drag seats with foam inserts. Im using one for driver and a stock fourth gen passenger seat. Well, thats the plan anyways lol. Have yet to procure a passenger seat. I'm working on getting the cage installed. What kind of power numbers are you shooting for? Weekend car?
10-22-2012, 02:51 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Yep keeping the seat there and picking up another one for the driver side. Not really sure on power but I have 8 lb springs in the gates to start with. I'll try 15 lb springs If I can get it done on gas, after that I'll have to bump to E85 and more boost.
10-22-2012, 03:27 PM
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Car: 1986 Camaro
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Transmission: Tick Stage 2 T56
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Re: Iroc LQ4, S480 turbo build
What sort of cam are you running? Intake? Those engines are great for boost. Are you on LS1tech as well?
10-22-2012, 03:42 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
It's a stock LQ4 with arp rod bolts, head studs, LS9 gaskets. Cam is a TU2 from speed inc. LS7 lifters, Texas speed pushrods and patriot gold extreme springs. I have an LS1 intake right now but I'm going with the Holley hi ram eventually. 80 lb. injectors, Holley rails w/ 8 an feed 6 return, Aeromotive regulator. One walbro 255 full time and a stealth 340 on a Hobbs switch when boosting.
Trans is a th400 w/ griner transbrake and I plan on a ptc converter. Ford 9" rear and and a 3.25 or 3.50 rear gear. I don't have a thread on tech but I am on there.
Trans is a th400 w/ griner transbrake and I plan on a ptc converter. Ford 9" rear and and a 3.25 or 3.50 rear gear. I don't have a thread on tech but I am on there.
10-23-2012, 09:18 AM
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Car: 1986 Camaro
Engine: LS6
Transmission: Tick Stage 2 T56
Axle/Gears: Moser 12 Bolt
Re: Iroc LQ4, S480 turbo build
It's a stock LQ4 with arp rod bolts, head studs, LS9 gaskets. Cam is a TU2 from speed inc. LS7 lifters, Texas speed pushrods and patriot gold extreme springs. I have an LS1 intake right now but I'm going with the Holley hi ram eventually. 80 lb. injectors, Holley rails w/ 8 an feed 6 return, Aeromotive regulator. One walbro 255 full time and a stealth 340 on a Hobbs switch when boosting.
Trans is a th400 w/ griner transbrake and I plan on a ptc converter. Ford 9" rear and and a 3.25 or 3.50 rear gear. I don't have a thread on tech but I am on there.
Trans is a th400 w/ griner transbrake and I plan on a ptc converter. Ford 9" rear and and a 3.25 or 3.50 rear gear. I don't have a thread on tech but I am on there.
10-27-2012, 11:20 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Small victories today. Got the turbo feed ready to go.
Also the fuel system is fully plumbed.
Also the fuel system is fully plumbed.
11-02-2012, 01:20 AM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Less clutter, I have my oil pressure gauge hooked up to the top. It'll be fine.
11-03-2012, 11:44 AM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Haven't had the motivation to get out there. It's been cold and gotta pay the bills.
11-03-2012, 11:54 AM
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Car: 1986 Camaro
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Re: Iroc LQ4, S480 turbo build
Yeah, I hear ya man. I'm just sitting here on the forums, wishing I could work on mine...
11-03-2012, 04:03 PM
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Car: 86 IROC, 89 GTA
Engine: 350 blocks, both of em
Transmission: 700r4s
Axle/Gears: 10 bolt and 9 bolt, 3.73, 3.23
Re: Iroc LQ4, S480 turbo build
Doing some planning for the hot side.. I'll be making an order here soon. I have to figure out what I need. It's a matter of ordering just enough bends because 304ss isn't cheap!