Questions for full 5.0 conversion for MGB

5.0mgb!?! · 09-29-2001, 08:11 PM

I am getting ready to convert my MGB to 302 power. I am considering just going with a 302 with AOD trans from donor 85 Cougar(dirt cheap!) What all should I need to pull to make the computer and all associated equipment function properly? Should I just junk the fuel injection and go intake/Holley route? T5 and engine mods will come later.

84LX89GT · 09-30-2001, 10:08 PM

I'm pretty sure you'd have to junk all of the stock wiring to go with a fuel injected engine because the stock system i believe is a 6 volt system instead of a 12 volt system, so i don't your lights, gauges, etc. would work properly. It would probably be easier to go with carburetion because you'd have to do ALOT of rewiring. You might be able to stick with a 6 volt system if you stay carbureted. The best option in my opinion would be to rewire the car (if in fact it is a 6 volt vehicle) and to go with fuel injection because you'll get better gas mileage and great throttle response.
Now that i think of it, the fuel injection system from that 85 cougar is probably Throttle Body (CFI) so that system is crap anyways and you'd have to do alot of adaption to get later model fuel injection to work.
If you're on a budget, going carbureted would be ALOT cheaper. Good luck, that sounds like an awesome project you have there.

------------------
Mustang Parts Specialties ripped me off, it could happen to you as well.
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT

5.0mgb!?! · 10-02-2001, 06:40 PM

Thanks for the info. The car is already 12 Volt and I already know carbs. I just hear really good things about the newer fuel injection systems, but know NOTHING about them. I may hold off and purchase another donor car to get a newer setup. If I do, any suggestions on how much has to come from the donor car...computer, sensors, wiring...

Thanks

------------------
Tiresmoke and Taillights Forever...Baby!!!

Other project cars are a '68 GTO 455 and a '77 4 speed Black/Gold TA

09-29-2001, 08:11 PM	#1
5.0mgb!?! Registered Member Join Date: Sep 2001 Location: Tx Posts: 8	Questions for full 5.0 conversion for MGB I am getting ready to convert my MGB to 302 power. I am considering just going with a 302 with AOD trans from donor 85 Cougar(dirt cheap!) What all should I need to pull to make the computer and all associated equipment function properly? Should I just junk the fuel injection and go intake/Holley route? T5 and engine mods will come later.

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09-30-2001, 10:08 PM	#2
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	I'm pretty sure you'd have to junk all of the stock wiring to go with a fuel injected engine because the stock system i believe is a 6 volt system instead of a 12 volt system, so i don't your lights, gauges, etc. would work properly. It would probably be easier to go with carburetion because you'd have to do ALOT of rewiring. You might be able to stick with a 6 volt system if you stay carbureted. The best option in my opinion would be to rewire the car (if in fact it is a 6 volt vehicle) and to go with fuel injection because you'll get better gas mileage and great throttle response. Now that i think of it, the fuel injection system from that 85 cougar is probably Throttle Body (CFI) so that system is crap anyways and you'd have to do alot of adaption to get later model fuel injection to work. If you're on a budget, going carbureted would be ALOT cheaper. Good luck, that sounds like an awesome project you have there. ------------------ Mustang Parts Specialties ripped me off, it could happen to you as well. '84 Mustang 5.0 LX my LX '89 Mustang GT my GT

10-02-2001, 06:40 PM	#3
5.0mgb!?! Registered Member Join Date: Sep 2001 Location: Tx Posts: 8	Thanks for the info. The car is already 12 Volt and I already know carbs. I just hear really good things about the newer fuel injection systems, but know NOTHING about them. I may hold off and purchase another donor car to get a newer setup. If I do, any suggestions on how much has to come from the donor car...computer, sensors, wiring... Thanks ------------------ Tiresmoke and Taillights Forever...Baby!!! Other project cars are a '68 GTO 455 and a '77 4 speed Black/Gold TA