i just blew up the motor in my 2000 GTand currently saving for a new motor , but just for ****s and giggles should i replace my n/a motor for a sc motor and if i do will the computer or any others parts need to be replaced ?
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05-05-2010
i just blew up the motor in my 2000 GT
05-05-2010
if you're going to replace with a s/c motor, you could probably get the trans and pcm thrown in for a decent deal.
if you're not going to replace either the pcm or trans, i'd put in a n/a and call it a day.
05-05-2010
Get an n/a bottom end (maybe urs is still good?) and get the supercharged top end.
05-05-2010
IMO if your getting the entire engine and are going to super charge it you should get the proper bottom end as well. The correct bottom and will lower compression slightly and IMO is a safer, better overall package.
After all. thats why it was built that way stock to begin with.
05-05-2010
Have you never heard of a top swapOriginally Posted by MrTube
05-05-2010
"Have you never heard of a top swap"
Yup. And also heard that many people have problems especially if not tuned just right. Also have heard even when they are tuned right they often still produce slightly less power then a stock super charged one.
I also believe in many years the super charged ones had beefier connecting rods.
My point was. If I were doing it, and had to replace the bottom end anyway, i'd get the correct SC bottom end and probably transmission just as noreasonwhy stated. This isn't a "my bottom end is in fantastic shape and I want more power" situation.
Even if I didn't read the forums on a daily basis and read posts about it I would still have to question, why would GM have spent the money to manufacture two different sets of pistons and connecting rods if it completely did not matter. Yanno? eh, just my 2 cents.
05-05-2010
a top swap will blow your motor to pieces unless you support the boost in the right way. the blown motors come with shorter rods (NOT STRONGER) and different pistons. that's about the only difference.
the higher compression motor (different pistons and rods) will take the power just fine unless you're dumb and don't allow the motor to flow the extra amount that they blower will give.
05-05-2010
Bio : why did GM run lower compression if simple mods fix the problem?
You also didn't comment on what you would do if you were the OP. Your saying you would go out and buy an N\A engine just to do a topswap on it anyway rather then use the entire setup from a supercharged vehicle?
05-05-2010
they ran the lower compression because both the GT and GTP have the same intake and exhaust. the NEEDED the lower compression to take the boost without grenading the motor. with a set of headers you can run a top swap on the stock pulley with a half assed tune and be fine.
if i were in the OP's shoes with the OP's knowledge i'd put another n/a motor in the car and drive it. once you start modding these cars they break.
05-05-2010
understood.
personally I think i'd still go for a complete SC set trans and all. Or as you said, just drop a known good N\A engine in it and drive it.
05-05-2010
doing a complete full swap is fairly expensive, that's the only thing with doing what you're suggesting that i'd shy away from. i'm cheap.
05-06-2010
if you don't know how to tune, don't do a top swap
05-06-2010
get a l67 with conversion harness and tuned pcm do a dp and plog and ull be fine keep stock pully for reliability not a zzp tune
05-07-2010
where would i get a conversion harness , replacing the motor isn't gonna be cheap and i can get a sc motor for about 300 bucks more than the na motor i found and both are fairly low on miles
05-07-2010
wtf is a conversion harness?
all you would need is a gtp pcm or upload a gtp bin into your pcm for that year. If your not getting an stock gtp tranny then your going to need to change your tranny settings in your pcm to use 3.29
05-07-2010
All it has is the new map connector and a connector for the BBV solenoid so it actually can pull boost.
Its called... get a Map connector with the new map and turn TCS off all the time.
05-08-2010
you don't need a bbv solenoid, i ripped mine off, open atmosphere.
your going to need the map adapter, zzp makes them, or if your good at wiring, you can splice it yourself. The engine should come with the s/c map sensor
05-09-2010
i think i'm just going to put the n/a motor back in it , i don't care about fast i just want it to run good and look pretty
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