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Old 01-10-2011, 08:17 PM   #1 (permalink)
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Ok so i want to build a good ls turbo motor k and i was wondering with the build im going for what kind of numbers can i expect i a stock ls turbo on 10lbs its making 253hp and 222tq on "on stock block " i have another ls motor im going to build and then swap. Dont tell me to put on a vtec head!!!!! because i already have a GSR, k and a ls will always make better tq so i want a nice street driver.

build is a stock head for now with stock block
eagle rods
Cp pistons either stock or 81.5 idk yet
new rings
stock crank
ACL race bearings
APR head studs

looking to make about 350 or more hp and about 300lbs on about 15lbs to max 20lbs i have a good trubo set up i know it can make the power im more concerned about the motor lol. That might be asking to much but i think i can to it and i dont need any more that that its more just for fun.

comments would be nice thanks
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Old 01-10-2011, 08:26 PM   #2 (permalink)
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try not to concentrate so much on PSI, to make 350/300 Id think you would want to go with a smaller sized turbocharger, and it would be fun for the street as well seeing as how smaller turbos build boost faster than big ones.

Do you have any sort of spending budget youre working with?
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Old 01-10-2011, 08:30 PM   #3 (permalink)
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If you want torque you bought the wrong car
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Old 01-10-2011, 08:33 PM   #4 (permalink)
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haha thats why you turbocharge!

my friends completely stock LS with an ITR tranny made 290/250 which I think is great because I made 290/210 on my GSR. his LS was an absolute beast!
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Old 01-10-2011, 09:41 PM   #5 (permalink)
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What are you building the car for? 1/4 mile? Highway car? or just a daily driver with a lot of power?

Notice how I didnt say "autocross?" lol
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Old 01-10-2011, 09:57 PM   #6 (permalink)
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Quote:
Originally Posted by integraGSBoy on Jan/10/11
haha thats why you turbocharge!

my friends completely stock LS with an ITR tranny made 290/250 which I think is great because I made 290/210 on my GSR. his LS was an absolute beast!
Yes but you're starting to come closer to the end of the line with the LS motor....the GSR engine can see way higher numbers.

Don't let the torque number throw you off. The higher revving GSR more than makes up for it.

For pretty much every situation, except money, GSR engine > LS engine.
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Old 01-10-2011, 10:02 PM   #7 (permalink)
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Quote:
Originally Posted by LightningTeg on Jan/10/11
If you want torque you bought the wrong car
Agreeeed.
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Old 01-10-2011, 10:03 PM   #8 (permalink)
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See the disco potato....gt28...awesome turbo for around 300 whp.
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Old 01-10-2011, 11:00 PM   #9 (permalink)
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Also the GSR makes less torque because they use less boost to make the same power.

GSR's average around 10-11lbs for 300whp vs 14-15lbs for LS's to make 300whp. That is stock for stock obviously.
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Old 01-10-2011, 11:02 PM   #10 (permalink)
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i have a precision turbo and its good for what im am doing it really not that big and makes boost fast, as for the wrong car i know but im just a collage kid, and i am just getting all my duck in a row before i build anything else so my budget is kinda open you saw what i am planing on building.

the car is a daily driver, i just like driving fast and beating out bigger cars like some stock bmws and what not

i know i can make better numbers with the GSR but i like how clean it is right now and it has alot of miles on it so i would have to do a full rebuild before i can boost it safely i do things right but it takes time lol

my two babies older pic
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Old 01-10-2011, 11:02 PM   #11 (permalink)
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the black one is the GSR and the REd one ls turbo
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Old 01-10-2011, 11:13 PM   #12 (permalink)
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Quote:
Originally Posted by LightningTeg on Jan/10/11
Also the GSR makes less torque because they use less boost to make the same power.

GSR's average around 10-11lbs for 300whp vs 14-15lbs for LS's to make 300whp. That is stock for stock obviously.
Yes but LS torque numbers seem to always be higher than GSR ones (comparing stock setups and same turbo), more than likely credited to its stroke ratio. however they cannot rev as high, but this isnt a pissing match between LS and GSR ones. OP said he wants to turbo the LS. Reaching the limit or not its still fast and fun! not like I said id sell my GSR for an LS-turbo haha
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Old 01-11-2011, 01:35 AM   #13 (permalink)
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yes this is true about the boost numbers but kinda incorrect because the GSR has higher CP ratio and if both have the the same cp ratio the ls will make better tq not always hp thats the only reason the ls has to boost more to see the same numbers but if the ratios are the same the ls will make better Tq then the GSR and will have better drive ability due to the lower rpm power range due to stroke of the ls block. And since i am going to be using this as a daily driver i dont want to make all my power at the top range of my RPMs

thats y an ls-vtec is kinda best of both worlds if built and done right.

im going to build the gsr but later dont have the time or money to devote to a full GSR power house build
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Old 01-11-2011, 03:53 AM   #14 (permalink)
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Hey Ryan nice lookin GS I have a R505-P also haha I LOVE my baby and its deff a rare teg color in my area, I too have built my LS for turbo setup for a daily driver while I'm in school and still running on a student's budget. I have done 3 different turbo setups on mine so far just playing around and learning as much as I can while still on a cheap car compared to say an Evo or Supra.

Currently, I just bought a JDM B18B stock motor from J-spec Auto for $700 after tax, went home and installed it that week in my garage. I had purchased a GSR trans and Mfactory diff and Comp Clutch Stage4 with extra strong PressurePlate a few months before because getting traction on the street is a real issue so a differential is a must in my opinion. I'm running an AFI Ramhorn manifold, 3" downpipe back, Garrett t3/t4 60 trim hotside, .63 A/R compressor. S300, ID1000's, Locally tuned by Shue Tune at Powertrain Control Solutions on the Dynojet they have.
Making 295whp STD correction method, 330whp ASE correction.
15psi tune but I run it around 12-13 on the street for now so I'm not just spinning tires all around town that is no fun. I will be installing boost by gear along with a few other projects I have lined up so I can run proper PSI levels for each gear.

All I can suggest if your shooting for 300whp is to piece your build together properly so all the parts compliment each other. I got my motor for not so cheap but it was real clean motor, so you could find an LS for cheaper than that I'm positive, and then use that saved money on a differential and proper clutch and pressure plate. Then make sure you get a really good tune and boost by gear so you get traction as best as you can. For around town you can ask for much for fun than that.

Goodluck with the build, make sure you get a proper tune if you want a good daily driver.
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