5.0L non HO to HO - Page 2

tom988 · 08-19-2003, 08:43 PM

It also had a 4bbl carb and intake but I switched to my intake and injectors. '86 mustang w/4bbl is HO correct?

Mach 1 · 08-19-2003, 08:59 PM

86' mustangs were fuel injected. Last year for carb was 85'.

PKRWUD · 08-20-2003, 02:31 AM

Quote:

Originally posted by tom988
its an HO from an '86 mustang supposedly. It has a casting # of E6SE. I know the S is supposed to be t-bird. But by watching the lifters I can tell the firing order is 13726548. So I assume its HO right?

What are you planning on putting it in? (what's the non-HO?)

tom988 · 08-20-2003, 06:33 PM

an '87 t-bird with AOD trans.

QuantumMotorsports · 08-20-2003, 07:27 PM

If the harness is from the 87 T-Bird, you don't need to replace it. I have used a harness identical to it and the engine ran fine. I imagine what is going on is the harness in the non HO t-bird and cougar engines are identical to the HO harness. Either that or the batch fired computer fires with the same frequency as one cylinder on the SEFI computer. I don't know enough about the computers to tell you. I also don't have a harness from a cougar or t-bird to look at because i don't have the cougar anymore.

Check out the colors of the wires on your harness. If there is one common color and eight individual colors (one for each injector) then it is an SEFI harness like the HO's. I would guess that is what is going on.

PKRWUD - You seem to know a lot about the different configurations of the 5.0 motors. Why don't you check into a wiring diagram on a 87-88 T-bird / cougar.

tom988 · 08-21-2003, 08:24 AM

My harness has one common color for the eight injectors which I'm guessing would be a ground or "return"? wire. Then the four inj. on the left side have a common color going to each. The four on the right side have a third common color going to each. On my computer it says EFI not SEFI. So I guess I have batch fired not sequential. Maybe I wont screw around with the connector. I'll see how it runs first.

08-19-2003, 08:59 PM	#22
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	86' mustangs were fuel injected. Last year for carb was 85'. __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

08-20-2003, 07:27 PM	#25
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	If the harness is from the 87 T-Bird, you don't need to replace it. I have used a harness identical to it and the engine ran fine. I imagine what is going on is the harness in the non HO t-bird and cougar engines are identical to the HO harness. Either that or the batch fired computer fires with the same frequency as one cylinder on the SEFI computer. I don't know enough about the computers to tell you. I also don't have a harness from a cougar or t-bird to look at because i don't have the cougar anymore. Check out the colors of the wires on your harness. If there is one common color and eight individual colors (one for each injector) then it is an SEFI harness like the HO's. I would guess that is what is going on. PKRWUD - You seem to know a lot about the different configurations of the 5.0 motors. Why don't you check into a wiring diagram on a 87-88 T-bird / cougar. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2.3L to 5.0L	jordan456789	Small Ponies	5	04-10-2009 12:17 PM
5.0L ---> 5.0L conversion	Rodoggx	Windsor Power	8	11-25-2002 10:03 PM
5.0L vs 4.6L comparison	tchm	Windsor Power	3	07-22-2001 09:07 PM
Tricks for 5.0L in 96 Explorer AWD	scott93gt	Windsor Power	0	07-02-2001 08:05 AM
Buying a 5.0L mustang	V6 bandit	Windsor Power	4	03-29-2001 10:40 AM

08-19-2003, 08:43 PM	#21
tom988 Registered Member Join Date: Aug 2003 Location: CA Posts: 7	It also had a 4bbl carb and intake but I switched to my intake and injectors. '86 mustang w/4bbl is HO correct?

08-20-2003, 06:33 PM	#24
tom988 Registered Member Join Date: Aug 2003 Location: CA Posts: 7	an '87 t-bird with AOD trans.

08-21-2003, 08:24 AM	#26
tom988 Registered Member Join Date: Aug 2003 Location: CA Posts: 7	My harness has one common color for the eight injectors which I'm guessing would be a ground or "return"? wire. Then the four inj. on the left side have a common color going to each. The four on the right side have a third common color going to each. On my computer it says EFI not SEFI. So I guess I have batch fired not sequential. Maybe I wont screw around with the connector. I'll see how it runs first.