Fox T-Bird/Cougar Forums

Technical => Engine Swapping => Topic started by: 85CougarLS on January 05, 2007, 06:31:42 PM

Title: 91-93 5.0HO to 85 LS
Post by: 85CougarLS on January 05, 2007, 06:31:42 PM
Woundering about problems might face in dropping a 91-93 HO into the 85' Engine bay? Sound good or complicated?
Title: 91-93 5.0HO to 85 LS
Post by: 1WLD BRD on January 06, 2007, 08:13:47 PM
It's not bad, I just did it to my '88 thunderbird.

just gotta change the front end of your motor, and swap on a carbed 4bbl intake, distributor, and carb and your set.
Title: 91-93 5.0HO to 85 LS
Post by: Chuck W on January 06, 2007, 08:15:24 PM
Why change to carb?
Title: 91-93 5.0HO to 85 LS
Post by: 86elan on January 07, 2007, 05:12:06 AM
Quote from: Chuck W;122317
Why change to carb?


'86 was the first year of FI right? 85 was still carbed
Title: 91-93 5.0HO to 85 LS
Post by: Chuck W on January 07, 2007, 08:43:09 AM
Is his car a 3.8?

Is he in Canada?
Title: 91-93 5.0HO to 85 LS
Post by: jcassity on January 07, 2007, 06:50:02 PM
Quote from: 86elan;122382
'86 was the first year of FI right? 85 was still carbed


FI started wayyyyyyyyy before then.  the first CFI was in 83,
first fuel injection system was in 1927.  It resides in your fuel tank.

im like chuck, wonder why he would have to go  carb'd
Title: 91-93 5.0HO to 85 LS
Post by: Chuck W on January 07, 2007, 08:50:50 PM
Well I know some Canadian 3.8's were carbed later I think, but the 3.8's in the US were CFI '83+ IIRC.
Title: 91-93 5.0HO to 85 LS
Post by: Thunder Chicken on January 07, 2007, 10:20:22 PM
3.8's in Canada were carbed through '86, though CFI was optional. I have only once ever seen an CFI V6 in one, years ago in an '86 at a dealership. I passed on it because it had a dead hole (prolly head gasket).

As for the MN12 HO in a Fox, MyWife'sKitty did it and used the MN12 brackets/accessories and intake. Look for the thread titled "Mywife'sHO" in the lounge.
Title: 91-93 5.0HO to 85 LS
Post by: 1WLD BRD on January 07, 2007, 10:57:06 PM
my '86 3.8L is CFI and my '85 WAS a 3.8L Carbed set up.  I prefer the look of a carbed set up under the hood of the four eyed cars over the EFI set up.  Plus it is cheaper and easier to set up/tune.
Title: 91-93 5.0HO to 85 LS
Post by: Chuck W on January 07, 2007, 11:46:00 PM
Quote from: 1WLD BRD;122518
my '86 3.8L is CFI and my '85 WAS a 3.8L Carbed set up.  I prefer the look of a carbed set up under the hood of the four eyed cars over the EFI set up.  Plus it is cheaper and easier to set up/tune.


Well since I have no idea where he lives...I'm only assuming is a US car and thus EFI already.  (Another gripe...fill out your locations people....)
You are in Canada, and they played by a different set of rules when it came to carb/EFI.

To me taking an EFI car to carb is backwards....esp for street use.
Title: 91-93 5.0HO to 85 LS
Post by: 1WLD BRD on January 08, 2007, 04:23:19 AM
except when it comes to CFI.  To me it is Garbage.  (in my experiences with them, they NEVER run right, and way worse Fuel mileage then either carbed or SEFI)
Now I agree, if it is SEFI keep it that way, but if it is CFI, go either way.:cool:
Title: 91-93 5.0HO to 85 LS
Post by: Chuck W on January 08, 2007, 08:36:19 AM
Well that's my point.  He has an EFI set-up from a 90-91 Tbird, and if his car is a US car, it should have the EFI fuel system in place. 
All he really needs then is a harness and ECU from a Fox car.
Title: 91-93 5.0HO to 85 LS
Post by: 86elan on January 08, 2007, 01:28:04 PM
Quote from: jcassity;122469
FI started wayyyyyyyyy before then.  the first CFI was in 83,
first fuel injection system was in 1927.  It resides in your fuel tank.

im like chuck, wonder why he would have to go  carb'd


I know that fuel injection has been around for a long time. I was only refering to FI in fox's.
I guess I meant SEFI, forgot about that CFI stuff. If it was my car and didn't already have SEFI I would just go get a good intake and a 4bbl.
Title: 91-93 5.0HO to 85 LS
Post by: Chuck W on January 08, 2007, 01:59:46 PM
Well regardless, CFI, EFI, SEFI.....his car is already equipped with the fuel system and the ECU power, etc... Not too far to go to keep it with EFI of some sort.
Title: Ohio Built
Post by: 85CougarLS on January 08, 2007, 07:09:59 PM
Injected setup 5.0; 85 LS model. after i read about some changes to the front, can i get some exp: pulleys, etc...
Title: 91-93 5.0HO to 85 LS
Post by: 86elan on January 09, 2007, 07:33:33 PM
Quote from: Chuck W;122573
Well regardless, CFI, EFI, SEFI.....his car is already equipped with the fuel system and the ECU power, etc... Not too far to go to keep it with EFI of some sort.



Yeah, I suppose it's all personal preference. Sorry to express my opinion, keep the fuel injection. Either way you go with it there is going to be modifications and upgrades necessary.
Title: 91-93 5.0HO to 85 LS
Post by: Chuck W on January 09, 2007, 08:03:09 PM
Quote from: 86elan;122818
Yeah, I suppose it's all personal preference. Sorry to express my opinion, keep the fuel injection. Either way you go with it there is going to be modifications and upgrades necessary.


Oh I wasn't harshing on your opinion...just backing up the fact that the basis is there to stay EFI instead of backstepping to carb.
Title: The Options
Post by: 85CougarLS on January 09, 2007, 11:50:41 PM
I fell that the reason the message board was setup, so that people can fell free to give advice, or state every opinion. I have thought about the carb intake; however, The Injection w/ the computer components help provide a more efficient air/fuel mixture.
Title: 91-93 5.0HO to 85 LS
Post by: vinnietbird on January 10, 2007, 10:04:57 AM
Everyone can state their own ideas and opinions.Disagreements (Not that there are any) are O.K. as well.It's how people deal with the disagreements that make the difference.Not everybody sees things the same way.Some think that their ideas are better then other's ideas (mine are usually always the best,and more right also.LOL).If there are disagreements,that's cool,but deal with them like an adult,not children.It's actually easy to do.Just get along,listen to what other people say,and remember,there are often many different correct answers to one question (sometimes not).We learn by asking questions,we learn by being wrong.State your opinions and go from there.