3.8 to 4.6 swap? - TCCoA Forums
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post #1 of 35 (permalink) Old 11-02-2005, 08:36 PM Thread Starter
 
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3.8 to 4.6 swap?

My friend wants to make this swap in his 94, how feasable is this?
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post #2 of 35 (permalink) Old 11-02-2005, 08:54 PM
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you need, motor, trans, ecm, and more.. got to think about exaust, and more too. its possible though
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post #3 of 35 (permalink) Old 11-02-2005, 08:54 PM
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need:

engine
transmission
rear end
axleshafts
driveshaft
computer
engine wiring harness
new sensors
rumor has it a new tach (I think the v8's are weighted differently, but not 100% sure)
v8 exhaust from front to back complete
v8 front suspension
lot's of beer
gullible friends

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post #4 of 35 (permalink) Old 11-02-2005, 09:00 PM
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lot's of beer
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Definitely need those

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post #5 of 35 (permalink) Old 11-03-2005, 07:41 PM Thread Starter
 
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Hahha, I'll tell him it's a no go
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post #6 of 35 (permalink) Old 11-03-2005, 09:03 PM
 
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tell him to do the splitport 3.8 swap, or the 4.2
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post #7 of 35 (permalink) Old 11-03-2005, 09:08 PM
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if he really wants to do a V8 swap into his bird, he should just go pick up a new one, unless he's got a ton of work into it he doesn't want to lose. Personally, like Nitefire I'm gonna go with a built 4.2

+1

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post #8 of 35 (permalink) Old 11-03-2005, 09:42 PM
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tell him to get a 4.6 DOHC from a mark viii, find the 99+ 'C'style heads, and get the sullivan carb intake with the cam driven distributor. No computer, no hassle
-Thomas

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post #9 of 35 (permalink) Old 11-03-2005, 10:09 PM
 
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you'd still need to upgrade the driveshaft and axles and rearend. Also the front suspension.
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post #10 of 35 (permalink) Old 11-04-2005, 12:24 AM
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right. it was more of a joke, because parts for that kind of setup cost well over 3 grand, let alone the cost of engine, tranny, driveshaft, etc.
-Thomas

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post #11 of 35 (permalink) Old 11-04-2005, 02:23 AM
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Thomas, we all know you were serious, you'd jump on it if you had the $$ so shhh

+1

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post #12 of 35 (permalink) Old 11-04-2005, 02:29 AM
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This swap can be done...if he needs parts cheap have him PM me.
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post #13 of 35 (permalink) Old 11-06-2005, 03:40 PM
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yeah i would just buy a new t-bird. even swapping over the performance parts he has on his t-bird would be less of a hassle then all that BS. plus you can get a decent bird around here for 2 grand. if he is dead set on keeping his t-bird (like me). just do the 4.2 swap. it'll be a sweet *** sleeper.
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post #14 of 35 (permalink) Old 11-06-2005, 07:28 PM
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It is not cost efective to do this. What a lot of people do is use the 96-97 3.8 computer and wiring harness and swaping in a 99 and above split port mustang 3.8. I would recomend selling the 3.8 car and get a 96-97 v8 car preferably a 96.
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post #15 of 35 (permalink) Old 11-06-2005, 10:31 PM
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Both swaps are completely doable. That being said, you better know what you're doing before you start buying anything, or plan on spending quite a bit of time learning as you go.

If your friend does decide to do either swap, and has specific questions, he's welcome to PM or email me.

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post #16 of 35 (permalink) Old 11-07-2005, 12:34 AM
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Quote:
Originally Posted by blown96bird
It is not cost efective to do this. What a lot of people do is use the 96-97 3.8 computer and wiring harness and swaping in a 99 and above split port mustang 3.8. I would recomend selling the 3.8 car and get a 96-97 v8 car preferably a 96.
why a 96 over a 97?

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post #17 of 35 (permalink) Old 11-07-2005, 12:42 AM
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Quote:
Originally Posted by Thomas
why a 96 over a 97?
Cause that noobie Thomas likes 97s and we all wanna spite him

+1

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2003 Mustang Cobra radiator, 180* T-stat, Hayden Ultra-cool auxiliary transmission cooler, 13" slotted/cross-drilled front rotors, Dual-Piston PBR calipers Powder Coated Red w/ black logo, 17" 7-spoke Chrome Motegis, JVC Arsenal 5000 HU with touch screen, Kappa 5x7's, Audiobahn 12 pushing 550 rms, FF50 driving lights, FF75 fog lights, xenon 95 air dam, 97 side skirts, rear window tbird decal
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post #18 of 35 (permalink) Old 11-07-2005, 07:16 AM
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the reason why a 96 over a 97 is ford thrifted the car in 97 leaving a lot of nice features off the car. 1. no locking glove box 2. no locking inside trunk release 3. no hydrolic glove box strut 4. no lights in the doors 5. tarus insturment cluster 6. no underhood light 7. no chrome trim in the sun roof seal.

On the plus side 4 wheel disk brakes became standard regardless if you bought ABS early in the 96 model. Some very early 96 cars without abs had rear drum brakes. The 97 have useable cup holders compared to earlier models.

Last edited by Thomas; 11-07-2005 at 10:28 AM.
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post #19 of 35 (permalink) Old 11-07-2005, 10:27 AM
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what about stuff like better tranny and aluminum crossover intake? cup holders are a plus but not real important.

1988 Notch Mustang: - 438W, direct port n2o, t56
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post #20 of 35 (permalink) Old 11-07-2005, 07:59 PM
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Quote:
Originally Posted by Thomas
cup holders are a plus but not real important.
Not to mention can easily be swapped in/out with the resources available around here

+1

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'95 who-the-hell-knows-what in progress
2003 Mustang Cobra radiator, 180* T-stat, Hayden Ultra-cool auxiliary transmission cooler, 13" slotted/cross-drilled front rotors, Dual-Piston PBR calipers Powder Coated Red w/ black logo, 17" 7-spoke Chrome Motegis, JVC Arsenal 5000 HU with touch screen, Kappa 5x7's, Audiobahn 12 pushing 550 rms, FF50 driving lights, FF75 fog lights, xenon 95 air dam, 97 side skirts, rear window tbird decal
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post #21 of 35 (permalink) Old 11-08-2005, 09:30 AM
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I got a 97 and wouldn't trade it for a 96. Thomas is well aquainted with the "Parts Bin Special". I do have the inside trunk release, too!

Blown96bird, with a 97, to go splitport, other than heads (got set from 97 F-150), upper and lower intakes (got them from 2000 stang), a fuel rail, and a chip, what else do I need? I plan to eliminate the EGR.

The Parts Bin Special is DEAD! It is being parted out.
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post #22 of 35 (permalink) Old 01-31-2011, 09:35 PM
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3.8 to 4.6 SOHC swap?

Either I suck at the search function or it hasn't been posted before but I just acquired a 96 t bird with a 4.6 and I plan on swapping it into my 94 3.8 car. I got a the whole car and a good tranny in the deal so I have all the stock parts. I know this swap has been done before but I can't find anything on what all I have to swap to make it work.

What all do I need to swap to make this work?

What else should I do while I have both cars here and the engines out?

Before you ask, the donor car doesn't have a title otherwise I'd just drive it.

Also I plan on jmodding the good tranny while it's out so any links to reading and how tos would be appreciated.

1994 Ford Thunderbird LX - 120xxx Mi
3.8L of leaking fury
1995 Ford Thunderbird LX - 108xxx Mi
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post #23 of 35 (permalink) Old 01-31-2011, 09:40 PM
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post #24 of 35 (permalink) Old 01-31-2011, 09:49 PM
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I love you...

This is gonna be Funnnnnnnnn.

1994 Ford Thunderbird LX - 120xxx Mi
3.8L of leaking fury
1995 Ford Thunderbird LX - 108xxx Mi
Stock 4.6
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post #25 of 35 (permalink) Old 01-31-2011, 09:56 PM
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post #26 of 35 (permalink) Old 01-31-2011, 10:04 PM
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I figured I can't go wrong because I fetched the whole car running well with 65k miles for $500. It's complete except for taillights, rear bumper cover and title. In it are every part I need to fix all the broken pieces in mine and all the parts I need to swap in for the stock upgrades (disc rear brakes, auto lamps, leather) and while it's apart I can do all the other work I need to do. It seemed like a good idea to me. I'm also not worried about the downtime as my car isn't %100 reliable as it is.

1994 Ford Thunderbird LX - 120xxx Mi
3.8L of leaking fury
1995 Ford Thunderbird LX - 108xxx Mi
Stock 4.6
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post #27 of 35 (permalink) Old 01-31-2011, 11:26 PM
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Master486 has lots of hands on experience with this. Pm him, or maybe he will chime in.

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post #28 of 35 (permalink) Old 02-01-2011, 12:53 PM
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I believe dash wiring from 94 to 96 should be the same, but get a wiring diagram to double check. Worst case you may need to repin a couple connectors. Use the complete engine harness out of the parts car. Easiest way to do this swap, if you have access to a lift, would be to drop the subframes out of both cars, leaving the engine and trans mated together, and all wiring still connected except the bulhead connector to the dash, and then just swap subframes over, the swap the remaining wiring, and put the one car back together.

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post #29 of 35 (permalink) Old 02-01-2011, 04:10 PM
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The dash wiring harnesses are not the same. To make your life easiest, you should get the computer, computer harness, and engine harness from a 97 3.8. Then the wiring is a direct swap. You will also need the following things, which I think have already been mentioned earlier:
  • 3.8L motor mounts
  • 3.8L power steering lines (all of them)
  • 3.8L tranny cooler lines
  • 3.8L driveshaft
  • 3.8L A/C lines

If using the 97 harness, you'll also need to swap the following sensors/electronics on the engine to the 97 ones:
  • Cam position sensor
  • Coolant temp sensor
  • Idle air control valve
  • Throttle position sensor

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post #30 of 35 (permalink) Old 02-01-2011, 05:03 PM
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He has a 96 donor car and a 94 that he is putting the motor into. Not sure where the 97 harness comes into play.

-91 Cougar LS, coming soon, complete overhaul with a 427" Windsor.
-90 XR7 5-speed black on black w/sunroof, MP2, coated rotors, double intercooler, 15%OD, ported heads, comp stage 1 cam, 85mm TB, 90MM LMAF, 80# injectors, and ported big valve heads
-98 Mark VIII LSC, Procharger P600b, TR3650 swap and 3.73s.
-90 SC Automatic rustbucket winter beater
-97 Tbird Sport 4.6 Nice weather daily driver
-"Your buddy Mike is INSANE!" -ClintD's dad
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