Advice on STS on H/C/i car please
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From: Hattiesburg, Mississippi
Advice on STS on H/C/i car please Would greatly appreciate you guys input. I have a nitrous kit on my car in sig and am tired of filling bottles and want to try something new. Im looking at the STS kit and GT-67 upgrade. As noted in my sig i already have a fairly stout H/C/I car (431rwhp NA and AUTO)with all the suspension upgrades. I have a Racetronix P&P kit and getting some 42# injectors. My question is, any clue what kind of power i could make on 5-7psi and would it be worth the money. I know my motor is not really set up for a turbo with the CR and stock shortblock, but i figure 5-7 psi should be fairly safe. I realize that it is not the BEST turbo kit by any means but is there any reason i cant do 550Rwhp plus and some 10 sec ets with the kit. THanks for the advise.
Originally Posted by kazfan30
Would greatly appreciate you guys input. I have a nitrous kit on my car in sig and am tired of filling bottles and want to try something new. Im looking at the STS kit and GT-67 upgrade. As noted in my sig i already have a fairly stout H/C/I car (431rwhp NA and AUTO)with all the suspension upgrades. I have a Racetronix P&P kit and getting some 42# injectors. My question is, any clue what kind of power i could make on 5-7psi and would it be worth the money. I know my motor is not really set up for a turbo with the CR and stock shortblock, but i figure 5-7 psi should be fairly safe. I realize that it is not the BEST turbo kit by any means but is there any reason i cant do 550Rwhp plus and some 10 sec ets with the kit. THanks for the advise.
well look in my sig for my link to my build; going to be doing the intercooler here in 2 weeks...and you damn right i'm countin down the time, cuz thats when i'm gettin done with summer school ; among others also, there are many of us here with STS kits.
whats your compression?
whats your compression?
You may have a lot to do with it and it could cost a bit of $$$ but even at 5 or 6 PSI, you'd be putting down 500+. I'm not sure what the specs on your cam are but bigger cams are typically not as boost friendly as a smaller more FI fit cam. That may be something you should also consider while contemplating the swap.
Where in MS are you located? I have an sts on my car now. Im getting ready to sale it for a twin turbo kit tho. Should be for sale soon if you interested. Dont know how close you are but you can check out the car if you like.. Im in the tupelo/starkville area. Depending on school.
I have to disagree. An F11 with a T67 and less than 8psi will likely not make north of 500 in an auto car. Even if it does, it would not be efficient. You have a lot to mess with on your car. Heres a list of what changes I would highly suggest to get you going.
-Dump those 3.73s for a set of stock 3.42s
-Sell/Trade your 243s for a set of LQ9 heads. They lower your compression to roughly 9.5:1
-Get a turbo spec cam. 99Z28 here on the boards made 505rwhp with a 228/228 cam on only 6psi with a T67 (stock everything else). But with an M6. TRT and EPP are good sources for turbo cam info.
-Get a nice FMIC 32x12x4 is popular if you wanna go big but lose foglights. a vertical flow 20x12x4 is good for keeping fogs. Both work best with a cut up bumper.
-Get a 2step
-Toss out your cats if you still have them
-Swap to stock manifolds and have them ported/coated and wrap from the end of the collector all the way to the turbo.
That will equal a 10sec car and 500+ to the wheels.
-Dump those 3.73s for a set of stock 3.42s
-Sell/Trade your 243s for a set of LQ9 heads. They lower your compression to roughly 9.5:1
-Get a turbo spec cam. 99Z28 here on the boards made 505rwhp with a 228/228 cam on only 6psi with a T67 (stock everything else). But with an M6. TRT and EPP are good sources for turbo cam info.
-Get a nice FMIC 32x12x4 is popular if you wanna go big but lose foglights. a vertical flow 20x12x4 is good for keeping fogs. Both work best with a cut up bumper.
-Get a 2step
-Toss out your cats if you still have them
-Swap to stock manifolds and have them ported/coated and wrap from the end of the collector all the way to the turbo.
That will equal a 10sec car and 500+ to the wheels.
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Originally Posted by JAvenger007
I have to disagree. An F11 with a T67 and less than 8psi will likely not make north of 500 in an auto car. Even if it does, it would not be efficient. You have a lot to mess with on your car. Heres a list of what changes I would highly suggest to get you going.
-Dump those 3.73s for a set of stock 3.42s
-Sell/Trade your 243s for a set of LQ9 heads. They lower your compression to roughly 9.5:1
-Get a turbo spec cam. 99Z28 here on the boards made 505rwhp with a 228/228 cam on only 6psi with a T67 (stock everything else). But with an M6. TRT and EPP are good sources for turbo cam info.
-Get a nice FMIC 32x12x4 is popular if you wanna go big but lose foglights. a vertical flow 20x12x4 is good for keeping fogs. Both work best with a cut up bumper.
-Get a 2step
-Toss out your cats if you still have them
-Swap to stock manifolds and have them ported/coated and wrap from the end of the collector all the way to the turbo.
That will equal a 10sec car and 500+ to the wheels.
-Dump those 3.73s for a set of stock 3.42s
-Sell/Trade your 243s for a set of LQ9 heads. They lower your compression to roughly 9.5:1
-Get a turbo spec cam. 99Z28 here on the boards made 505rwhp with a 228/228 cam on only 6psi with a T67 (stock everything else). But with an M6. TRT and EPP are good sources for turbo cam info.
-Get a nice FMIC 32x12x4 is popular if you wanna go big but lose foglights. a vertical flow 20x12x4 is good for keeping fogs. Both work best with a cut up bumper.
-Get a 2step
-Toss out your cats if you still have them
-Swap to stock manifolds and have them ported/coated and wrap from the end of the collector all the way to the turbo.
That will equal a 10sec car and 500+ to the wheels.
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Here is a list of my setup:
LS2 Timing Chain - $30
LS6 Ported Oil Pump - $100
LQ9 Heads - $250
2003+ Z06 Cam - $100
42 Lbs Injectors - $240
STS Kit w/ GT67 - $2300
Stock Exhaust Manifolds - Free
Tune - $350
Gaskets/Bolts/Fluids - $200
So you will need to sell your cam/heads/headers/exhaust ha
Havent dynoed yet but im pretty sure it will be around 550 whp, @ 10 psi.
LS2 Timing Chain - $30
LS6 Ported Oil Pump - $100
LQ9 Heads - $250
2003+ Z06 Cam - $100
42 Lbs Injectors - $240
STS Kit w/ GT67 - $2300
Stock Exhaust Manifolds - Free
Tune - $350
Gaskets/Bolts/Fluids - $200
So you will need to sell your cam/heads/headers/exhaust ha
Havent dynoed yet but im pretty sure it will be around 550 whp, @ 10 psi.
sorry to rain on your parade but with an auto car your not going to be at 500 rwhp with 8 psi.. on your set up....
i currently just went forged short block, turbo cam. through an auto at 9psi making just above 500rwhp. i have potential to go higher when i upgrade my fuel system but you cant on a stock motor,, i already blew my stocker up on 8psi
i currently just went forged short block, turbo cam. through an auto at 9psi making just above 500rwhp. i have potential to go higher when i upgrade my fuel system but you cant on a stock motor,, i already blew my stocker up on 8psi
Originally Posted by smoke20
sorry to rain on your parade but with an auto car your not going to be at 500 rwhp with 8 psi.. on your set up....
i currently just went forged short block, turbo cam. through an auto at 9psi making just above 500rwhp. i have potential to go higher when i upgrade my fuel system but you cant on a stock motor,, i already blew my stocker up on 8psi
i currently just went forged short block, turbo cam. through an auto at 9psi making just above 500rwhp. i have potential to go higher when i upgrade my fuel system but you cant on a stock motor,, i already blew my stocker up on 8psi
Also depends where hes located, colder temps, more air, ect.
I think 450 whp is attainable if he goes 7 psi
You don't have to do as much as everybody thinks, IF you go procharger. I don't think a turbo setup would work as well but if you want forced induction and don't want to completely change your set-up do what I did. My car was at 408rwhp cam only, I had an f-14, 4.11s and a ss4000. Not too far off from you. I added lq4 heads(only $350) to lower the compression a little. That's the only thing I would suggest you change and if you sell your heads you'll more than cover the stock lq4/lq9 heads. Then just add a procharger, fmic and fuel system and you should be way above your goals. It got me what's in my sig, the only other thing I'm going to have to change is my gears because I'm running out before the 1/4. I'm switching to 3.73's though so you might be ok with a 28" tire.
I forgot to add that I have fast 90 intake and NW 90, full bolt ons and true duals so my setup was very close to yours. I didn't listen when everyone told me not to go FI, I'm pretty happy how it turned out.
I forgot to add that I have fast 90 intake and NW 90, full bolt ons and true duals so my setup was very close to yours. I didn't listen when everyone told me not to go FI, I'm pretty happy how it turned out.
Last edited by rufretic; Jun 14, 2007 at 05:47 PM.
Originally Posted by rufretic
You don't have to do as much as everybody thinks, IF you go procharger. I don't think a turbo setup would work as well but if you want forced induction and don't want to completely change your set-up do what I did. My car was at 408rwhp cam only, I had an f-14, 4.11s and a ss4000. Not too far off from you. I added lq4 heads(only $350) to lower the compression a little. That's the only thing I would suggest you change and if you sell your heads you'll more than cover the stock lq4/lq9 heads. Then just add a procharger, fmic and fuel system and you should be way above your goals. It got me what's in my sig, the only other thing I'm going to have to change is my gears because I'm running out before the 1/4. I'm switching to 3.73's though so you might be ok with a 28" tire.
I forgot to add that I have fast 90 intake and NW 90, full bolt ons and true duals so my setup was very close to yours. I didn't listen when everyone told me not to go FI, I'm pretty happy how it turned out.
I forgot to add that I have fast 90 intake and NW 90, full bolt ons and true duals so my setup was very close to yours. I didn't listen when everyone told me not to go FI, I'm pretty happy how it turned out.
Originally Posted by Cchris1109
howd you blow it up????
Also depends where hes located, colder temps, more air, ect.
I think 450 whp is attainable if he goes 7 psi
Also depends where hes located, colder temps, more air, ect.
I think 450 whp is attainable if he goes 7 psi
as far as the prochager being a better setup is for each individual to decide, to run the 600rwhp with a procharger or turbo your going to need to upgrade the internal eng componets or your on borrowed time. also the stock trans wont like you putting that much through it
Originally Posted by smoke20
trans neutralized during a pull and overreved eng , hurt #5 piston. i agree 450 is very attainable if he changes some things on his setup , i was basing what i said on his current setup ...
as far as the prochager being a better setup is for each individual to decide, to run the 600rwhp with a procharger or turbo your going to need to upgrade the internal eng componets or your on borrowed time. also the stock trans wont like you putting that much through it
as far as the prochager being a better setup is for each individual to decide, to run the 600rwhp with a procharger or turbo your going to need to upgrade the internal eng componets or your on borrowed time. also the stock trans wont like you putting that much through it
Really, how about 680rwhp on a stock block and stock 4l60e? I know not everyone is willing to risk it but it can be done.
Originally Posted by rufretic
Really, how about 680rwhp on a stock block and stock 4l60e? I know not everyone is willing to risk it but it can be done.
Originally Posted by smoke20
im happy for ya , hell i wish mine hadnt blown, are your internals forged??? my forged motor is a stock block but bullet proof everywhere else thanks to HKE.
Yeah, I'm just messin with you. Mine is not forged, don't tell me, I know I'm crazy. I think it's a coin toss once you get past 500rwhp. Some go the first time they go wot, some last a month and some longer but I think in most cases premature failure is due to a bad tune or no tune. It sounds like you just got unlucky
Originally Posted by rufretic
Yeah, I'm just messin with you. Mine is not forged, don't tell me, I know I'm crazy. I think it's a coin toss once you get past 500rwhp. Some go the first time they go wot, some last a month and some longer but I think in most cases premature failure is due to a bad tune or no tune. It sounds like you just got unlucky
