info on all ways to up 3.8L's performance

Shaggy · 11-10-2000, 09:15 AM

One word to instantly put you in the 13's possibly 12's with good tuning and driving....Supercharger I know they are expensieve but that is part of the price of going fast in s small displacement motor.I have seen some of the vortaeched cars run with everything stock and been all over the 13's...Now to try and answer some of your existing questions though...On the cam note you will probaly have to get a regrind or check into the 99 up cam it is different than yours...The pistons TRW should have them at least in hyperutechnic...The inake I would just extrude hone the one you have the 4.2L/99 up 3.8 intake is to much of a pain in the but to make fit for the minimal HP gain...If you don't want to just go ahead an port you own heads the 99 up heads have a slight redesign that supposedly make them better...The throttle body you should be able to make a 5.0/4.6 one work with a little fab work just look ant the 4 differnent designs (86-93 5.0,94/95 5.0,96-up 4.6 SOHC and 96 up 4.6 DOHC)and see which one would be easiest to make fit.

[This message has been edited by Shaggy (edited 11-10-2000).]

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11-10-2000, 09:15 AM	#6
Shaggy Registered Member Join Date: Feb 1999 Location: Houston,TX Posts: 466	One word to instantly put you in the 13's possibly 12's with good tuning and driving....Supercharger I know they are expensieve but that is part of the price of going fast in s small displacement motor.I have seen some of the vortaeched cars run with everything stock and been all over the 13's...Now to try and answer some of your existing questions though...On the cam note you will probaly have to get a regrind or check into the 99 up cam it is different than yours...The pistons TRW should have them at least in hyperutechnic...The inake I would just extrude hone the one you have the 4.2L/99 up 3.8 intake is to much of a pain in the but to make fit for the minimal HP gain...If you don't want to just go ahead an port you own heads the 99 up heads have a slight redesign that supposedly make them better...The throttle body you should be able to make a 5.0/4.6 one work with a little fab work just look ant the 4 differnent designs (86-93 5.0,94/95 5.0,96-up 4.6 SOHC and 96 up 4.6 DOHC)and see which one would be easiest to make fit. [This message has been edited by Shaggy (edited 11-10-2000).]