Well I figured it is about time to discuse the different types of forced induction that have been used in a third gen lsx swap. I've seen magna chargers, single turbos, Sts turbos... Not a whole lot of Paxton and procharger swaps... It seems like a procharger would be easier to install then a turbo setup for sure. What gains have everyone seen with which swaps? Maybe any pictures you guys could post? Part numbers for brackets and which brackets used? What intercoolers you've used? Truck or car manifolds used? What was done to modify an STS kit? How'd you upgrade your fuel system? dual intank pumps? Boost a pump? How much boost you guys running? Compression ratio? Lq4,Lq9,ls2,ls1 ect ect. Get everybodys minds sparked up and ready to do some builds this winter. I'll post info as I find it too. Thanks

 

Turbos and maggies Ive seen but so far my eyes have not seen any centri installs on a LS swapped third gen. Which kinda sux as i wouldnt mind someone else being the guinea pig for what bracket and set up fits the cleanest. Its not that i dont mind trying a bunch out myself but shipping pieces back and forth across the border is a major pita and cost. Anyways thats the thoughts for today

 

For the centrifugal setup, i did alot of measuring and was going to start a centri kit into my iroc-z before i ended up moving my motor over.

F-body kit would require you to mod the rad and swing the bottom forward to allow room, and a vette kit would require you to move the top of the rad forward and get super creative with an inlet tube for the supercharger.

If no one does this within the next 4 years (it'll happen before haha) im going to do a centri kit in my iroc-z

 

I'm planning on doing a marine style centri on the passenger side. Custom mounting plate and brackets will be a must

 

Go to Prochargers site. They now have released a Universal LSx kit. It is pricey though!!

 

Look into LS GTO kits. They mount them on the drivers side of the engine on the top. I believe it should fit with a little modification.

 

I'd flat-out LOVE to have a turbocharger setup, or a Maggie sitting on top of my 6.2 - but no one's been able to answer my questions about whether or not forced induction "plays nicely" with VVT...

 

HMMM i'm sure someone on tech would know.

 

I don't see why it wouldn't... The new Cadillac CTS-Vs are charged from the factory. Its got to be tunned in somehow.

 

Drivers side? Mines very tight on the drivers side i have a boat load of room for the compressor on the passenger side which is where i was thinking. Only thing stopping me from going at it right now is my car is dead nuts reliable and gets faster every year somehow... Very strange but I never mess with a good set up so I'll run this until complete boredom then go for boost. Might just do a whole new engine build at the same time too... add cubes...

But then again this engine I have is sweet and very reliable and doesnt use any oil so maybe I'll boost it til she blows then build. Ahhh the choices... Next winter is going to be interesting...

 

This is why being a car guy sucks. My ideas for my car change more then my wife changes cloths....Can someone just send me some money..lol. Yea there is plenty of room on the passenger side. It seems like all the centi's mount to the driver side..weird.

 

C5's centri kits mount on the passenger side and kind of what I "thought" might be the place to start

 

If you go on LS1tech I have seen a few guys with vvt have turbo setups. The cam seems to be the boggest pita with it.

 

Do you mean to tell me that NO ONE has turbo'd an LSx? C'mon...that would be some useful info.

 

Theres been several that have turboed a LSx thirdgen. Not any centis....

 

Ok well lets talk about turbos... How about master power? t76? Turbonetics. t78? what size for a ls1 future 6.0l

 

Master power's biggest turbo right now is the MPT-76. However, word is they have a 88mm in the works. That would be one hell of a turbo.

For a 6.0L, the turbo size depends on the goal.

70mm - quick spool up, full boost probably by 2600-3000rpm. Less peak power.

76mm - Full boost likely by 3500rpm, higher peak power

88/91mm - Full boost likely 4500+rpm. Highest peak power.

Thats on a single turbo kit thats been designed decently well. Guy's have had alot of sucess with 364-376ci motors, you dont want much more then that for a boost. .030 6.0L with stock crank (370ci) can make endless power.

PT88 guys generally are ranging from mid 10's to bottom 9's. Precision Turbo just released a 91mm version of the PT88. I believe its identical on the exhaust side to the PT88, but 91mm on the compressor side. I believe theres a few guy's running mid 8's on these turbo's, but their small enough that you can still run them on the street.

 

So let me get this straight, are you saying that if you are going for a street driven car that a person should go with the 76mm turbo? This would be nice info.

 

Well... I'd like to run my LS1 cause I already have it.. Just install 317 heads and cometic headgaskets. Maybe a tc78? Or master power pretty good? Should I forge the ls1? or build a 6.0? or a 5.3? Also would really like to know what manifolds people are using. What power levels to expect too? Thanks guys

 

Actually, from the little bit of research I've done, one of the bigger concerns is cylinder pressure messing with the VVT function by making it more difficult to open the valves against boost pressure, thus throwing the timing events off. Choosing a cam might get "interesting", but people have gotten a handle on even the L92 heads now, so that should be a bit more of a known quantity (I'd think).

 

TC78 will allow you to produce the most power, but TC78's are expensive. Over $1200 i believe, where a MPT-76 is only $800.

As for L92 heads, avoid them at all costs in boost situations. They have thin decks and it doesnt take excessive pressure to have them lift. If you looking below 800rwhp then their fine, but anywhere near/beyond, you want a 317 or aftermarket head

 

Oh ok. Thanks for the info. What manifolds are people using? Ive seen Stock LS driver side flowing to a log on passenger side. Also 2 front facing unknown manifolds. Custom headers ect. I like the front facing manifolds the best. Also is it really worth boosting an LS1 w/317 heads? Build a forged 6.0? Ok so don't use L92 heads and VVT hu? Thanks

 

Like to get around 550-600 hp. Maybe more in the future.

 

I would use truck manifolds, only problem is they dont 100% fit. No manifold does for our car's. Truck manifolds work great in 4th gens, but they hit the subframes in our cars.

I would cut the flange off the manifold a fair distance back, then weld a V-band flange on, and build custom tubing from there.

Only thing is you gotta use a proper high nickel welding wire/filler if you want to go this route cause you'd be welding cast, which likes to crack. Also make sure you support your turbo/piping as if you've got the turbo's weight hanging on the pipe/manifolds, your almost guaranteed' to have cracking problems.

You also need to relocate your alternator to the passenger side if you want to go truck manifold route. Other option would be custom turbo headers

 

There was someone on LS1 tech with a thirdgen that used various manifolds.. It worked but he don't know what they came off of..

 

GTO Manifolds??

 

Here some useful info on exaust manifolds
http://www.ls1tech.com/forums/conver...asurments.html

Here is a different turbo set up using 5.3l GTP manifolds
http://www.ls1tech.com/forums/conver...asurments.html

 

You guys seen the procharger LSX swap supercharger kits? Looks very tempting and not to expensive for procharger.
http://www.procharger.com/LSxTransplant.shtml

http://www.procharger.com/pdf/SERPENTINE_LSx.pdf

http://www.exoticperformanceplus.com...html?item=1795

 

That looks good.. I dunno..tempting though.. Would it hit on the fenderwell?? Curious what power it'd put down on an lS1..

 

those 5.3L GTP manifolds look like they give the most amount of room for our cramped engine bays. tightly tucked to the block (guessing cause it was a FWD setup and space is definitely a premium in those bays) and they dont kick out too far.

 

I've been kinda eye ballin the c6 manifolds... Be nice if they cleared my K-member facing down and forward. Run a t78 up front... Think im gonna jump in and order them.

 

The pictures of the C5 manifolds in that thread make it look like there is a regular piece of steel tubing welded between the cast manifold and the flange. If I'm right, could that be cut apart and a sharper angle welded in to clear our k member? Or would the angle have to be so sharp that it would kill flow?

 

It'd be nice if someone had some C6 manifolds to post some fitment pics. I don't think the C5s would work.

 

Ok say heres the run down of my build. Ill start a build thread as I get closer to starting. I'm running truck manifolds flipped forward with the flanges cut off and V-band installed. The turbo will be tucked kinda by the passenger side close to where the battery was. Taking out my foglights and trimming the main support for the bumper. Where my E-bay 31x12x4 intercooler will be mounted. Ill be running a Turbonetics TC78 turbo and 317 Heads w/ cometic gaskets. As well as 60lb/hr injectors. I think My walbro I installed shoulb be enough. I picked up a ford 9" off e-bay that was missing the coil brackets for $200. Got my brackets welded on and the unit painted. Also my axles from currie on order. I'll be making a few extra 9" Torque arm bracket kits if any one else is intereseted. I just got to find what center section to use. Will for sure be Nodular. Don't know if I was to use a Detriot Locker or the Ford true Trac (yea I know... Stock and HD lol). I should be running a 3.23 gear. So it should be fun. I'll supply pics on another thread to help everyone out since I couldn't find much info.

 

What about using G8 manifolds? I just helped put some longtubes on one tonight and the manifolds look interesting. I didn't get very good pictures of them (infact only got pics of the drivers side), but there's a small chance they might work. I'm gonna try and get them from him so I can get some pictures to post up.

 

Here's another posting on stainless works forward facing 3rd gen headers for turbos.
http://www.ls1tech.com/forums/forced...o-headers.html

Keep us posted on how those manifolds fit. Try to take some pics!

 

ttt

 

Im installing a radix maggie soon, 2.9 puley, gt2-3 cam, 60# in, 90mm tb.

 

Ok well I'm slowely but surely getting everything together. Just got to figure out if I want to keep a/c and what manifold setup I want to use. Really looking at The SSW third gen ones. But 1k..WOW. So far i've got... Tial wastegate, Tial BOV, Intercooler, Installed the 9" and brake setup. Someone really needs to stuff a lil blower on a lsx... Radix or Kennibell ect. I've just always wanted a turbo car though. Hopefully have more updates when I get back to my house from work.. 20 more days..sucks.

 

Look 2 threads down from this one

 

Man those Stainless Works headers are nice. If I can get a nice job here soon and start saving, I may go that route next winter. Really all I need to do with my block is change the cam out with something more boost friendly. I figure I could sell my whole exhaust setup for about $1,500 which would get me started on a turbo build. I really want a turbo bad. Man that's so tempting!!

 

^^ aren't you running 11+:1?

 

Seriously none? Is that from experience of trying all available options; GTO, C6 G8, etc. Or from nobody coming forth having tried those options? I'd love to be able to find a factory option that works because I don't have any way of welding the truck manifolds I have and there isn't a speedshop in the area that would touch anything like that.

I have a set of GTO mani's but my car is a daily so I can't very well try them.

I've been biten by the turbo bug and I want positive manifold pressure.

 

ive made a trucks manifold type but using fabricated tubular headers,
but on my car i have hi mount single t4.
which i just got running. yet to dyno or go to track. its actually coming off since it sold hotparts and engine to friend.
which will fund the turbos for a tt setup ive alredy started working on. for my car.

also ive developed a front accesory drive with integral drive for ati procharger p600b head unit. all run off the serpentine belt. uses oe 3rd gen alternator. oe ls damper or udp. it uses gm type2 ps pump.
all brackets are made from billet aluminum. bolt on. fit under stock hood if keep efi. use dual fmic. with ypipe intake tract.
based around sttock kmember with adapter plates for ls engine swaps.

 

You gotta post some pics of that setup! I may just step into the unknown for me.. Build a set of forward facing headers. So I can keep my a/c and keep the alternator in the stock place. But again..why have a/c? I always have the windows down anyways. And its only really hot a month out of the year. And its not a DD. Well i'm still collecting parts my self. And it doesn't hlp I have a hard time making up my mind. Still workin on getting my shop built and getting the 9" stuffed my car (more or less the brakes)

 

OK guys I took the leap. Purchased a TC78 Turbo .96 a/r. Also my wideband and aem Truboost. Now on to what i'm gonna do with the headers. I'm either making my own from speedway motors kit or buying the expensive SSW LSX forward facing headers...$950 bucks...damn I dunno. Got my SFCS in today and remover the old lsx Y pipes and flanges, also the manifolds. So if anybody needs a LSX Y-pipe that will only work witha tubular k-member and with alston sfc's (not umi or spohn) let me know. Not the best but they work and will last.

 

Where did u pick up your TC78? Im gonna go TC78 for my setup (Though im turboin my '99 FRC Vette right now), i just spent a whole bunch of money on forged 347 internals, the fastest stock 6.0L is 9.30 @ 146 as far as i know, so that leads me to believe i can crack a 9.90 off with a 3000lb raceweight, and retain the stock main bolt situation (Studs & Line honing is expensive)

What are you going to do for your waste gate situation? Ive been looking at the new synapse waste gates, though the one i like is a 40mm, so im going to have to make sure its designed into the system very well to allow lots to flow through it so i can have nice street manners still.

Also, what size DP are you running? 3"? 3.5"?

My iroc-z will be using a procharger F-1R when i get around to it, but thats $$$ that i dont have yet. Maybe ill sell my vette and dump loads of cash in my iroc hahaha

 

Heres a 6.0L TT truck manifold build thread. LOTS of pics. Car put 644 whp down and its still being sorted out. Hitting dyno again soon

http://ccfbg.com/forum/viewtopic.php...er=asc&start=0

 

Kinda wanted to bump this thread to see the latest. Finished my Front mount single.

 

Still have a ways to go.