Heavily debating turbo for my stock LS1 drag car
#1
Heavily debating turbo for my stock LS1 drag car
I have yet to do a turbo build but would love to. I have a completely stock LS1 in my 1990 RS Camaro. The car has been my bracket car for quite some time with several different motor set ups in it. It has been for sale but there have been no decent offers on it so it looks like I will be holding onto it. Since the car is already plenty capable of a lot more power I am thinking maybe a single 76mm turbo. I don't want to spend a ton of cash but would like to go well into the tens and be able to make many passes in a row with it. I am thinking about starting out with a set of up and forward stainless headers and fabbing the piping myself. I am a capable welder so that is not a problem. I am wondering since it is going to be a drag only setup if a waste gate with just a spring and a POV will be fine for boost control? Also I am wondering if the hot side should be reduced leaving the 3" collectors and how small? I am also going to run 98 octane gas (doesn't stink) and am wondering if meth injection would be needed with an AtoA intercooler? I already have an LS6 cam and intake to use but I am wondering if this is good enough to get in the bottom tens - upper nines? I am not worried about getting the tune spot on because I live close enough to the infamous Pat G. Any input would be greatly appreciated, especially from folks that have done similar builds. The car currently weighs 2870lbs.
#3
8 Second Club
iTrader: (3)
I foot brake my car and as long as I get it just into the two step after lighting the top bulb, then roll in and floor it on the second bulb, it builds 7 psi and will easily go red on a full tree.
Pro tree, forget it.
I have a 76mm turbo and at 10 psi high nines.
Will take some careful planning you can do it. Not so sure about the budget part.......
Ron
Pro tree, forget it.
I have a 76mm turbo and at 10 psi high nines.
Will take some careful planning you can do it. Not so sure about the budget part.......
Ron
#4
Thanks for the info. I don't necessarily have a set budget. I just read the sloppy mechanics and it leads me to believe I can easily get it done for a couple of grand. I have a trans brake and a two step on the car already. I also have an almost bullet proof 4k stall converter. I am not real sure about my TH350 and 4.56 gear. I am thinking a glide and a 3.73 may work out much better. Is ten PSI doable with 98 octane and meth with a stock motor?
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#9
Restricted User
I run 20 PSI with a billet 75mm on 93 pump and meth in my daily driver. You'll be way ahead of me on 98 octane.
I would lose the up and forward headers and use stock truck manifolds. More strength and better heat retention. Big cost savings too.
I would lose the up and forward headers and use stock truck manifolds. More strength and better heat retention. Big cost savings too.
#12
TECH Addict
iTrader: (17)
Why don't you ask the dude with a picture of someone smoking a cigarette for an avatar since you guys seem to **** each other a lot, respond to every post, and drive cars no one gives two ***** about? He's probably an expert. Actually surprised you aren't given the fact that you've rocked a 90 Iroc with a shitty I feel bad For You And Your Taste And Judgement hood.
#14
You said you're a capable welder, if that's the case do the truck manifolds. You can whack the ends off, modify them a bit, and add v-bands.
The LS6 cam, while not the best will work. I'd at least add some PAC 1218 springs, cheap head studs, and head gaskets.
The TH350 probably won't survive, Jakes Performance (site sponsor) is having a sale on TH400s and custom converters, I'd give him a call.
As for the gears, 3.73s and a nice choice for that weight, and the 1/8th mile.
What tires are you running?
Also, at that weight, and a 76mm at 10lbs, your goals should be easy.
The LS6 cam, while not the best will work. I'd at least add some PAC 1218 springs, cheap head studs, and head gaskets.
The TH350 probably won't survive, Jakes Performance (site sponsor) is having a sale on TH400s and custom converters, I'd give him a call.
As for the gears, 3.73s and a nice choice for that weight, and the 1/8th mile.
What tires are you running?
Also, at that weight, and a 76mm at 10lbs, your goals should be easy.
#15
28x10.5 stiff side wall. Most of my racing is 1/8th mile. I was thinking glide if the TH350 doesn't hold. It is fresh and held up fine to my nitrous 406 even leaving on the brake and spray together. I doubt it will hold up to the turbo though. I already have a glide case and a friend builds all of my my transmissions. I am looking into which manifolds will fit best now. I have even seen pictures of a manifold that will clear the alternator in the stock location.