Hey guys.. im looking into gettin a cobalt sc but i want good number from it as im gettin rid of my 400whp srt.. i love cobalts the look everything about them.. now this is all i got planed so far so if you guys could give me advise on what i will need to add and or something diffent please let me know.. i want to go with the stage 4 kit with a 2.4-2.5 pulley cold air intake 3' exhaust a heat exchanger not to sure about them totally tho and also looking to get the Harrop HTV1320-LSJ Supercharger .. not sure what stock motor can take for boost or what i would be running.. not sure about the tune yet ither so if you guys could help me out that would be great

Thanks in advance

 

If you want anything over 300 abandon the stock supercharger and go tvs, or just turbo it. Why dont you just get a ss/tc?

 

you will need loads of meth for running the stage 4 kit, a lot of guys dont even run the stgIII, you would bet better of sticking to 2.8/2.89 pulley, but the harrop is a good option

 

yeah you wont hit 400whp with the harrop i don't think bolt on turbo kit tho..... maybe good luck

 

Or you could just buy a cheap 600cc bike and walk on cars all day

 

go TC man

 

ok so i would need meth??... anything else u can recommed as i really dont know what im talking about yet lol.. and BTW i am not tryin to get 400whp mind u i do want over 300whp.. do u think what i have named off would be able to get that goal?.. and also what is the Harrop HTV1320-LSJ Supercharger good for power wise??..

Thanks in advance

 

If you are looking for 400 hp get a tc

 

dont really want turbo.. and im not looking for exactly 400 im looking for over 300

 

intake
exhaust
heat exchanger
dual pass
option b
met inj.
2.8 pully
60's
whicked tune
trans mounts
... that would be a good start

 

^^ that would be around 250 whp.

If you want 300 whp you should seriously consider the Harrop. Other wise withnut nitrous or motor work you will be hard pressed to get it witht he M62. If you plan on running a 2.5 in pulley you will def want to look into meth as well as porting the SC.

 

Its painful to think about what kind of **** a 2.4 pulley could get you into. Get the TVS if you buy the car.

 

If you buy the SS/SC, definitely go TVS. With good supporting mods and a good tune, you'll be setting at ~340 whp. Give or take a little.

Anything smaller than 2.8 on the Eaton and you will be overspinning the blower. Not to mention creating a lot of heat. A 2.4 pulley would be like taking a butane torch and shooting it down your intake manifold...lol

But TVS is definitely the way to go if you are wanting the SS/SC. If not, find yourself a SS/TC. Those are putting down over 300 ft lbs and over 300whp on just tunes and exhaust I believe. You throw on a bigger turbo, hot and cold side piping plus a nice FMIC, you'd probably be in the 400 whp club.

 

I just woke up and am a little bit cranky so bare with me on this. But I am going to be nice enough to give you the run down on things.

1. One of the most important things you need to know is that it is VERY difficult to hit above roughly 280whp without head work on the stock m62 supercharger and without nitrous.

2. On the m62 and lsj engine, you can't just slap on an extremely small pulley and go. You MUST have cooling mods or you will blow your #4 piston. The best cooling mods are methanol injection, dual pass end plate with option b, and a second heat exchanger.

3. The tune is the biggest part of success. You will either need to get a custom tune via hptuners, or buy hptuners yourself and do the tuning. Hptuners is just the program we use on our cars and thats pretty much it for the tuning aspect. There are A LOT of tips and tricks to tuning but I am not getting into that.

4. A turbo setup would make more power on the lsj then the tvs will if you are using the correct turbo etc. If you want my opinion the easiest way for you to hit around 350-400+whp would just to be to drop 4500 on the hahn stage 5 kit *thats 4500 installed in chicago by the way*.

5. That pretty much covers the basics, but you really need to worry about the IAT2's and knock retard, look those things up and read on them. An interceptor gauge can read these and many other things. Hope this helps you bro.

6. I don't know why I used numbers, I just thought it would be fun lol.

 

Hey thanks gor all the info guys.. i was tryin to find what the dual pass end plate with option b actually does i can find it to buy but it dont give very good info on it lol.. and also i am planing to go with meth not to sure yet.. and what pulley you guys think i should go with on the harrop or w.e its called lol..now is the TVS that same one just wondering sorry for asking question as i said i am REALLY new to these cars im good with cars and learn easily.. so with a new super charger do you think i would have to redue the head to get the power i want?.. and also i want this to be save im not tryin to blow my car up haha..so please give me all your thoughts i REALLY do not wanna go turbo at all.. i love supercharges lol.. so just give me ur ideas for what i should do with my build and also ideas for cooling mods and things i will need.. also what can the stock motor take for boost?..and could i use the 2.4-2.5 on the TVS or w.e it called lole it's the 1700 dollar one lol..

Thanks in advance

 

yes harrop is TVS.

2.8 is a good sized pulley for the tvs... 2.6 has some nice torque...

the heat that comes with the boost is what the problem is... You can run safer boost with a turbo than a super... So if someone says they are pushing 25psi, but have a turbo... i wouldnt expect the same performance per psi in a supercharger..

So with that being said, IF you can take away the heat, you can add the boost. A 2.8 is a pretty popular pulley. Puts out about 17psi give or take... A 2.4 would be wicked.. probly over doing it just a tad... a 2.5 would probly be the lowest i would go..

If you get hptuners, theres a couple nick nacks you can do to keep things cooler.. Its a good program... You also need to run bigger (60 pound) injectors with anything under a 2.9 inch pulley (i run a 2.8 with no probs on the 42.5 pound injectors, but some people beg to differ).

Thats your cooling.

 

yah about the duel pass plate or w.e with the option b what does that actually do what is it where does it go.. i cant find ANY info on it at all

 

The dual pass plate goes on the side of your intake manifold. You have to pull your intake manifold off, take the stock end plate off, pull the cores out and switch them around, the bolt the new dual pass plate to the side.

It allows for the coolant to spend less time heatsoaking in your intake manifold before it is sent back to a heat exchanger, and, if done right can drastically lower your IAT2's

 

Im sorry but if you cant find any info on that at all, your not looking.

Or your not looking in the right places...

 

Cut him some slack, Short :P

 

oh, i meant it in the nicest way...

i can show him where to look, or how to look.. i was just informing him that he should have found something...

 

ok cool would u be able to help my find out some useful things..?.. i found a couple build threads on here witch helped me alot and i been looking for more but only found 2 i belive.. or is there any other cobalt fourms ?

Thanks