Super Coupe Motor In A Fox Body Bird

Topic: Super Coupe Motor In A Fox Body Bird (Read 8022 times) previous topic - next topic

Super Coupe Motor In A Fox Body Bird

Reply #15 – December 20, 2011, 11:11:42 PM

there is no such animal as a carb'd SC intake, unless you're talking about running NA.. then it's a rare bird, especially in a performance form.. stock EFI intakes are super restrictive from my understanding, so the NA 3.8 performance options aren't really there

Super Coupe Motor In A Fox Body Bird

Reply #16 – December 21, 2011, 12:52:52 AM

just how good are the super coupe motors?

We never got the 3.8 over here (or atleast not in any decent numbers) as we had our own inline 6.

although it didnt stop someone putting one in an EA Falcon (1988-1991)
http://i607.photobucket.com/albums/tt151/pooljunkiejeff/tn_100_2743.jpg
http://i607.photobucket.com/albums/tt151/pooljunkiejeff/tn_100_2744.jpg
http://i607.photobucket.com/albums/tt151/pooljunkiejeff/tn_100_2738.jpg

Super Coupe Motor In A Fox Body Bird

Reply #17 – December 21, 2011, 12:57:14 AM

they're great once you get past the head gasket issue.. they pack a swift punch for being in such a heavy car.. i'm willing to bet an SC 3.8/5 speed in a mustang/capri with slight suspension mods and typical bolt-ons could rocket into the 12's with ease

Super Coupe Motor In A Fox Body Bird

Reply #18 – December 21, 2011, 01:00:27 AM

Heh, ammusing that they have a headgasket 'issue'

the factory numbers make them appear a bit meh, but i've got no idea how they respond to modifications.

Super Coupe Motor In A Fox Body Bird

Reply #19 – December 21, 2011, 01:11:02 AM

they were detuned off the assembly line for emissions .. the first mods i made to mine were a jet chip, 15% pulley, headers off an SN95 mustang, 2-1/2 true dual with h pipe and a 75mm throttle body.. it was a huge improvement over stock.. felpro used to make a 'correction' head gasket for the common 3.8 head gasket issue, but they either changed the part number or discontinued them, as i can't find them anymore.. a good place to start with the gasket issue is running ARP studs, instead of factory replacement head bolts

Super Coupe Motor In A Fox Body Bird

Reply #20 – December 21, 2011, 11:12:11 AM

Well my friend had 120,000 miles on his sc before the head gaskets gave out. And as for how well they mod he said he could have it to 300 to 350 hp with less then 3000 dollars and that includes the rebuilt motor. I do have a question not sure who will know this but is there any difference between the fox 3.8 motor mount and the mn12 3.8 motor mount. I need to see if I need to find a set or if the set off the downer sc will work.

Super Coupe Motor In A Fox Body Bird

Reply #21 – December 21, 2011, 11:33:43 AM

according to chuck's site, all 3.8 mounts (at least as far as birds go) are the same

300-350hp is achievable with less than $1000 if you spend your money in the right places.. i know you said including rebuilding the motor, but what exactly was he including in that? re-using all the OEM parts, or buying new? i've seen SC'shiznit 450 with a stock crank/rods and aftermarket pistons.. if he's big into SC's, i'm sure you've already heard about bill and super coupe performance.. great guy, great parts.. would highly recommend doing business with him..

my only 4 suggestions are getting a chip, bigger front mount than the OEM piece, SN95 mustang headers with a decent sized true dual exhaust (or aftermarket, whichever) and at least a 10% pulley.. those 4 things will be the biggest bang for your buck and won't make your wallet cry

also, depending on the year SC the motor cam from, it may not have the M90, which came on the later SC's.. they're a vast improvement over the earlier blowers

Super Coupe Motor In A Fox Body Bird

Reply #22 – December 21, 2011, 11:37:39 AM

Quote from: jonwayne1988;375994

I do have a question not sure who will know this but is there any difference between the fox 3.8 motor mount and the mn12 3.8 motor mount. I need to see if I need to find a set or if the set off the downer sc will work.

Yes, they are slightly different IF you're talking about MN-12 v 86-88 3.8 mounts. The side-to-side offset on the driver side mount is a bit different between them, but the pass side is the same. You can use either on an 86-88 car with minor mods.

The year of the car determines what mounts.

83-85 TBird/Cougar - Use the original mounts, or Fox Mustang ones.
86-88 TBird/Cougar - Use the original mounts, or 89-92 MN-12 TBird/Cougar ones.

Or a set of aftermarket ones...

All 3.8 mounts aren't the same...it's just simplified on my site, but there are 3 types from 86-97 - 86-88, 89-92, 93-97. 86-88 and 89-92 are close enough to work. The bases on the 93-97 are TOTALLY different and will not interchange.

Super Coupe Motor In A Fox Body Bird

Reply #23 – December 21, 2011, 11:40:57 AM

Quote from: Chuck W;375996

Yes, they are slightly different IF you're talking about MN-12 v 86-88 3.8 mounts. The side-to-side offset on the driver side mount is a bit different between them, but the pass side is the same. You can use either on an 86-88 car with minor mods.

The year of the car determines what mounts.

83-85 TBird/Cougar - Use the original mounts, or Fox Mustang ones.
86-88 TBird/Cougar - Use the original mounts, or 89-92 MN-12 TBird/Cougar ones.

Or a set of aftermarket ones...

All 3.8 mounts aren't the same...it's just simplified on my site, but there are 3 types from 86-97 - 86-88, 89-92, 93-97. 86-88 and 89-92 are close enough to work. The bases on the 93-97 are TOTALLY different and will not interchange.

well your site banboozled me.. lol good info to know

Super Coupe Motor In A Fox Body Bird

Reply #24 – December 21, 2011, 07:15:37 PM

I would have been NA.

Super Coupe Motor In A Fox Body Bird

Reply #25 – December 21, 2011, 11:03:46 PM

OK so I'm going to use a 91 sc motor in a 88 tc so I can use the monuts off the 91 in the tc with no problems?

Super Coupe Motor In A Fox Body Bird

Reply #26 – December 30, 2011, 06:06:30 PM

OK so I have the motor now I need to figure out what flywheel and clutch to use with a t5 transmssion. I have a stage 2 10.5inch clutch. Think I can use that? It is made for a 5.0 mustang.

Super Coupe Motor In A Fox Body Bird

Reply #27 – December 30, 2011, 07:22:24 PM

The clutch and transmission whould work as long as you have the correct bellhousng. You will need a 0oz inbalance flywheel and the correct starter. I know cougarse on here put a t-5 behind a 88 v-6 which should use the same parts to swap over.

Wiring is going to be a much bigger issue then msking things fit. I would use a 86-88 5.0 harness and re-pin it to use the 89-93 supercoupe computer, and run all of the electronics off of the super coupe motor. You will also need the bigger fuel injectors, entire sc setup, and I'm sure a lot more things I am not aware of.

Super Coupe Motor In A Fox Body Bird

Reply #28 – December 31, 2011, 11:40:01 PM

Quote from: jonwayne1988;376028

OK so I'm going to use a 91 sc motor in a 88 tc so I can use the monuts off the 91 in the tc with no problems?

you should have (almost) no problem doing so

Quote from: Haystack;376540

Wiring is going to be a much bigger issue then msking things fit. I would use a 86-88 5.0 harness and re-pin it to use the 89-93 supercoupe computer, and run all of the electronics off of the super coupe motor. You will also need the bigger fuel injectors, entire sc setup, and I'm sure a lot more things I am not aware of.

agreed.. i never really thought of doing it that way.. it would eliminate a lot of the headaches that are tied into the stock SC harness.. they should have basically the same sensors/plugs, but i would definitely say it'll 99.9999% likely need to be repinned for the SC eec

Super Coupe Motor In A Fox Body Bird

Reply #29 – January 01, 2012, 01:12:50 AM

http://oldfuelinjection.com/5.0Lpinouts.html

No idea what the actual eec pinouts are for the supercoupes, but I would assume that it would follow closesly to the diferences between the 86-88 harness and 91-93 5.0 harness. I think swaping less then 10 pins at the 60 pin plug would get you 99% of the way there. Everything should more or less fit under the hood, and the t-5 swap shouldnt be any harder then any other aod to t-5 swap, as long as the super coupe motors stayed 0oz imbalance.