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top swap or turbo

You need to be able to fab the header to end where the stock manifold ends. That way it bolts into the zzp crossover. what are you planning for the rear exhaust ports?
 


I'm not the one handling the fabing so I'm not sure yet we are still in the planing stages. If the headers wont work then I just wont use them no big deal.
 


I'm looking to have 400whp this is my daily driver so I don't want to go to radical. But here is what Im looking for. I need cam sugestions I need to know what injector size would be good. I will be changing the fuel pump, rocker arms push rods, springs and rebuild the trans to handle the power. Oh and reflashing the PCM,plugs and tstat. Any suggestions are welcome if there is something I need to do let me know. Thanks for everyones help
 
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I'd go with the Z3 piping from ZZP, front stainless powerlog, a st3 or st5 stattama cam, #130 crow valve springs, double roller timing chain, #65 injectors, racetronix fuel pump, get intercooler piping made or from cxracing on ebay, Lt1 maf and don't cheap out on a wastegate. You can talk to Matt M from zzp/stattama for a better idea on what cam you want.
 
400whp is no longer DD status. you will break your car all the time. i highly suggest against this. been there, done that.
 
bio broke his car all the time and he didn't even have 400whp...LOL....then again he had a GP and not an LS car.
 
Ok maybe I'm stupid but if the car is built right whats gonna break? Or what is most likely to break? Half shafts or is it more a bottom end issue?
 


no, its not that if you build it right it cant handle it (for some amount of time). 400 whp is just not that streetable in our cars. youll have no traction ever and youll rape axles like its going out of style. can it be done? yes. are you better off having a second car to drive when you just want to get somewhere? yes.
 
What if you just use a boost controller to dial down the boost levels when your just driving around? What is the optimal whp for a DD?
 
personally I would like to stay under about 300whp in these cars for a DD. A boost controller would help a lot to control excessive power(assuming you are going turbo). It just depends if you wanna drive it as a grandma if you have that much power on a regular basis. The less you drive it, the easier it is on the drivetrain components as well. Have you looked into getting new half shafts yet? South Florida Pulley Headquarters makes some decent ones from what I have heard. They are labeled as their"bulletproof" half shafts. They are like five or six hundred for the set, but if you are gonna have a lot of power and drive it often it may be worth the reliability.
 
400whp non streetable? It's not that hard to hit 400whp with a decent turbo setup. The turbo he has is small enough to be a good street setup also. Your cam selection is going to make or break its streetability, thats why i suggested to talk to Matt M. Last I heard he used a Z3 kit and a ST5 cam that broke 430whp and was very happy or surprised with the streetability of the car. As long as you don't get stupid and run too much boost, these setups are reliable. The transmissions can handle the power to a certain point, that point being determined by how you drive and anything over 400whp and your going to want a 1" chain. One of the things to consider is that turbos have a bit of lag over a supercharged setup, this little lag helps the tranny life and shaft life. I have been running a stock tranny for months now, i'm sure some signs of wear will show up if i were to tear into it, but it still can break the tires loose at 30-40mph.
 
Thanks yes I will be upgrading the half shafts. And no I don't want to go to radical with the cam I still want it to be streetable. Who makes the ST5 cam? I have a guy at comp cams looking into my project right now.
 


I chose this turbo because it was small enough to still be streetable we also have a T67 and a T72 but I figured the T61 was plenty.
 
ST5 seems like it might be a bit much for street-ability. Comp makes the ST series. I will call Matt tomorrow.
 
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