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post #1 of 13 (permalink) Old 05-29-2003, 12:27 AM Thread Starter
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Question Questions

ok gentlemen.

Here is the situation so you have a lil background info:


I've got a 94 SC that's smacked up and parting it out has been semi successful. Some of you may have seen it. ANYHOW, my brother's Chevy project has taken a HUGE jump fwd from a garage built 305 HO to STOUT drop in 350 ...sooooo I'm eyeing the SC engine and thinking ..I've got something for you mister chevy man.


So here is the project.

-grab myself a 94/95 TBird/Cougar with a bad engine for cheap...and do a swap

BUT...as we all know projects like this ain't easy.


SO a couple of questions:


-Must I pull the tranny too or are all 4R70W's the same?
-Most of the electronic wiring harneses are the same, right?


Jesse

www.twistdisc.com

Co-Founder-Member at large www.NJTACC.com (New Jersey Thunderbird & Cougar Club)

Twist Disc 60mm throttle body, ProForm E-Fan/Coil, 1" spacer, K&N cone filter, Underdrive crank pulley, 180 Therm, Removed rear mufflers/air pump, EGR bypass. Stock timing, 55mm MAF, stock fuel pump, 3.08
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post #2 of 13 (permalink) Old 05-30-2003, 09:23 PM
 
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How are you planning to get anywhere near that much power from an na motor? It would be cool to know. I think most of the wiring is the same, your just going to have some left over for sensors that the ne engine doesn't use. And I would think that you would have to get a chip to make the comp work with that engine.
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post #3 of 13 (permalink) Old 05-30-2003, 09:49 PM Thread Starter
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Thumbs up

I'm swapping the whole engine.

www.twistdisc.com

Co-Founder-Member at large www.NJTACC.com (New Jersey Thunderbird & Cougar Club)

Twist Disc 60mm throttle body, ProForm E-Fan/Coil, 1" spacer, K&N cone filter, Underdrive crank pulley, 180 Therm, Removed rear mufflers/air pump, EGR bypass. Stock timing, 55mm MAF, stock fuel pump, 3.08
15.92 @ 87.78, 179 RWHP 255 RWTQ
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post #4 of 13 (permalink) Old 06-02-2003, 12:04 AM
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As i read it, you're considering swapping the SC engine into a 3.8 n/a car.

Do keep the SC trans, the 3.8 n/a trannys are even weaker than the 94 SC's.
Consider beefing it up, while its out, see the articles section.

Most n/a's have a little 7.5" open rear pumpkin, so plan on swapping that, too,
[its no sweat at all], and throw in some steeper gears, while you're at it.
Some n/a's had 4w disc /ABS and trac-loc, but it is rare.

The n/a fuel pump is way inadequate, the SC pump just adequate for stock,
and if you're planning to tweak it up to compete with a hot 350, get a 190 or 255 Walbro fp to start with.

I'm not too wise on wiring, but i know you'll need to use the SC EEC, and most of the SC underhood wiring [sensors, DIS, ircm, fans, etc.] so some careful study and some splicing and pin switching may be required to integrate the SC engine harness with the n/a car harness, but probly not too major, if you can read & follow the EVTM manual allright.

3.8n/a's are generally a lot lighter than SC's, so there's one advantage, anyway.

94 SC/auto.

Don't ya give me no Buick.
Son, you must take my word;
If there's a God up in Heaven,
He's got a Silver Thunderbird.
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post #5 of 13 (permalink) Old 06-02-2003, 12:39 AM Thread Starter
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Thumbs up

Thanks. I figure I'll put in a tranny cooler and the J-mod when I pull the tranny.



I almost forgot about the fuel pump!! That would not have been pretty when I stepped on the GO pedal!!

I know I'll have to change the rear end, but I'll wait on that as I'm not gonna be putting it on the track with slicks just yet. I've seen the abuse a Ranger and SC V6 Mustang can take.

When it comes to wiring harnesses, to keep it looking professional, I'll most likely swap those too where major splicing will be necessary.

J3

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Co-Founder-Member at large www.NJTACC.com (New Jersey Thunderbird & Cougar Club)

Twist Disc 60mm throttle body, ProForm E-Fan/Coil, 1" spacer, K&N cone filter, Underdrive crank pulley, 180 Therm, Removed rear mufflers/air pump, EGR bypass. Stock timing, 55mm MAF, stock fuel pump, 3.08
15.92 @ 87.78, 179 RWHP 255 RWTQ
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post #6 of 13 (permalink) Old 06-02-2003, 05:45 PM
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Quote:
Originally posted by SC Ward
3.8n/a's are generally a lot lighter than SC's, so there's one advantage, anyway.
Half the reason for that is due to difference in engine weight (intercooler, supercharger, etc), so he's not going to see much of a weight difference.

-Rod

Rod @ AzzKicker Cars
[email protected]
90 XR7-The Meth Addict-KB SC'd 5.0L DOHC Stroker
2004 Mustang GT-The Driver-Intake/Exhaust/3.73's
1995 F150 4x4-The Mud Toy-5.0L/4R70W/33's/Warn 8274 Winch
94 LX w/Splitport 3.8L from 2000 Mustang - SOLD
2 - 90 35th Anny Ed SC's
And a TON of parts cars!
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post #7 of 13 (permalink) Old 06-02-2003, 09:55 PM Thread Starter
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Well there is the ABS and automatic ride control and the body skirts/bumper...that should be worth a good...hmmm...250lbs?

www.twistdisc.com

Co-Founder-Member at large www.NJTACC.com (New Jersey Thunderbird & Cougar Club)

Twist Disc 60mm throttle body, ProForm E-Fan/Coil, 1" spacer, K&N cone filter, Underdrive crank pulley, 180 Therm, Removed rear mufflers/air pump, EGR bypass. Stock timing, 55mm MAF, stock fuel pump, 3.08
15.92 @ 87.78, 179 RWHP 255 RWTQ
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post #8 of 13 (permalink) Old 06-02-2003, 10:17 PM
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The ABS adds a few pounds, but the ARC and side skirts/ SC bumper covers weigh next to nothing over the LX shocks and bumper covers.

-Rod

Rod @ AzzKicker Cars
[email protected]
90 XR7-The Meth Addict-KB SC'd 5.0L DOHC Stroker
2004 Mustang GT-The Driver-Intake/Exhaust/3.73's
1995 F150 4x4-The Mud Toy-5.0L/4R70W/33's/Warn 8274 Winch
94 LX w/Splitport 3.8L from 2000 Mustang - SOLD
2 - 90 35th Anny Ed SC's
And a TON of parts cars!
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post #9 of 13 (permalink) Old 06-02-2003, 10:59 PM
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My SC is a good 300lbs heavier than OKCs Sport was,
even with his big stereo & 18" rims, SC seats,
and iron-head 5.0. He's lighter now.

Surely an SC engine,
even with the heavy blower and IC plumbing,
is lighter than an all-iron 5.0 engine.

Hard to figure where all the extra weight comes in.
SC seats, typically dual power leather, about 80 lbs. each;
leather split-fold rear seat, and supporting structure;
optional, [but typical], JBL, sunroof, remote trunk & fuel door,
wiring for all that stuff, and the ARC, ABS, gfx,
i guess a lot of little things add up.

Wish i'd ever weighed my low-optioned 90,
[cloth, no sunroof or JBL, etc.]
prolly minimum weight for an unmodified SC.
Definitely 'felt' lighter than the 94.

94 SC/auto.

Don't ya give me no Buick.
Son, you must take my word;
If there's a God up in Heaven,
He's got a Silver Thunderbird.
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post #10 of 13 (permalink) Old 06-03-2003, 04:52 PM
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Wiring is different from an N/A to an SC. The LX is a 31 pin connector and the SC is a 35 pin - or something like that.

The 94 SC that my dad and I last May had been wrecked in the front, so obviously the air bags were deployed and cracked the dash. The dash that came with it was an LX dash and we didn't know that until after we had put it in. Everything from the dash and forward worked. But behind the dash, nothing. It would crank, but not start because the fuel pump wasn't working.

Either swap dashes in the process, or pull both dashes and put the SC wiring into the dash going back into the car. Not sure how much wiring is different, but I'm sure that most of it different. Just something to keep in mind when you swap over.

-Andy "Melon"

1994 Thunderbird SC 3.8L Supercharged
1999 Crown Victoria P71 4.6
2000 Explorer 5.0
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post #11 of 13 (permalink) Old 06-03-2003, 05:08 PM Thread Starter
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Wink

I take it the LX was of the same year right?


Good quote

www.twistdisc.com

Co-Founder-Member at large www.NJTACC.com (New Jersey Thunderbird & Cougar Club)

Twist Disc 60mm throttle body, ProForm E-Fan/Coil, 1" spacer, K&N cone filter, Underdrive crank pulley, 180 Therm, Removed rear mufflers/air pump, EGR bypass. Stock timing, 55mm MAF, stock fuel pump, 3.08
15.92 @ 87.78, 179 RWHP 255 RWTQ
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post #12 of 13 (permalink) Old 06-03-2003, 09:23 PM
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I'm guessing.. I'm pretty sure it was 94/95. If your going to swap wiring, might not be a bad idea to swap that anyway just to make sure. Might save on future headaches.

-Andy "Melon"

1994 Thunderbird SC 3.8L Supercharged
1999 Crown Victoria P71 4.6
2000 Explorer 5.0
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post #13 of 13 (permalink) Old 06-04-2003, 02:38 PM Thread Starter
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Unhappy

I have only one thing to say...





ok...two things...






excuse me while I quietly go insane just thinking about this project

www.twistdisc.com

Co-Founder-Member at large www.NJTACC.com (New Jersey Thunderbird & Cougar Club)

Twist Disc 60mm throttle body, ProForm E-Fan/Coil, 1" spacer, K&N cone filter, Underdrive crank pulley, 180 Therm, Removed rear mufflers/air pump, EGR bypass. Stock timing, 55mm MAF, stock fuel pump, 3.08
15.92 @ 87.78, 179 RWHP 255 RWTQ
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