View Full Version : 3.8 - 3.8 swap!

02-26-2006, 09:38 PM
I have a 2000 3.8l v6 5spd...if I wanted to swap to a 2001-04 3.8l v6, would that work, or would I have to modify anything? The reason I'm thinking of doing this is because I'd like to do some work on a used engine like porting and polishing as well as a cam swap and then put it in my stang so I have my original engine as well I can take as much time as I want...Also, if I just got intakes and heads from an 01-04, would those fit directly in my 2000, or would I have to modify anything? Thanks!

02-26-2006, 10:37 PM
as far as I know.. the 99-04 stangs had the same head and intake set up.. shouldn't be a problem....

02-27-2006, 10:25 AM
the 01-04 3.8's have the IMRC's in the lower intake, so to use it, you'd have to delete those if you were just swapping heads and intakes onto your current engine. if you're going for a blower or turbo later on down the line, you'd probably want to delete them anyways, because i think they become a restriction at some point and deleting them allows you to open up the short runners more.

02-27-2006, 12:41 PM
I also know that when looking up part numbers for CAI and u/d pulleys the '99-'00 1/2 have different numbers from the years after that... I'm not sure what, if any impact this would have on your swap...

02-27-2006, 10:04 PM
Yeah, I plan on keeping natural aspiration...but if anyone has info on exactly what I need to do, that'd be great. I also found I might hafta do something with the fuel rail and pump to get everything working properly...Any clues anything else I might hafta do besides what jeff suggested?

02-28-2006, 12:26 AM

that guy used 01-04 intakes on his 00. he does a pretty good job of explaining the process as well as porting and polishing the intakes.

it looks like the only things you'd have to do would be delete the IMRC's, drill and tap a couple of holes for the temperature sending unit and figure out how to attatch the coil pack. i think they have a different amount of mounting holes between the 99-00 and the 01-04 style intakes.

02-28-2006, 01:38 AM
well blah, I should have kept my mouth shut haha.. I was just thinking the differences between the older style, and the newer split port.. sorry...

Tim Russell
02-28-2006, 08:25 AM
There is 2 styles to the harmonic ballancer for the '00 cars, which is why you see two numbers for the UD pulley. You have to pull the ballancer on the '99 to install the UD.

02-28-2006, 09:28 AM
fuel rail & pump are fine as is and will support a modified NA car easily.

If you use the 01+ lower intake you will have to delete the IMRC's since your EEC can not control them.

UDP will have to match the block, internally or externally balanced.

01+ the IAT was integrated into the MAF sensor. You can use your stock one on the newer motor if you want.