420a 250 horses?

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420a 250 horses?

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420a 250 horses? - 2/10/2006 3:54:47 PM

eclipse27

Posts: 78
Joined: 7/3/2005
Status: offline

I know nothign about turbos. I have a 420a i want to rebuild and turbo. When i go to get it rebuilt, how much pressure should i tell them i want out of this. I assume the lower the pressure the cheaper it will be. And i just want to pull atleast 250 horses out of it. I have around 200 now. I was also hearing a supercharger maybe better?

Post #: 1

RE: 420a 250 horses? - 2/10/2006 6:42:08 PM

TheAdvocate

Posts: 2321
Joined: 8/18/2005
From: Baraboo, WI
Status: offline

What do you have done to it, that you have 200 hp already? Just curious so we can help you get to 250... I personally would go with a turbo.. And you can push about 6-8 psi from a stock motor, but if your goin with a rebuild you would be able to get more... You could be over 300 hp if you stick money into the motor also... I don't think you could get 250 to the wheels with the 420a without going with forced induction(turbo, supercharger). 200 hp already seems good tho for a GS, what kind of mods are you running already?

(in reply to eclipse27)

Post #: 2

RE: 420a 250 horses? - 2/10/2006 7:09:28 PM

eclipse27

Posts: 78
Joined: 7/3/2005
Status: offline

Custom Borla exhaust, Electric supercharger, new headers, upgraded tb. Supposidly that all pushs me around 200. I have 155,000 miles on my car. I'm worried it wouldn't handle a turbo. So i'm gonna hafta rebuild her i guess.

(in reply to TheAdvocate)

Post #: 3