Need 5.0 EFI advise
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Senior User
Joined: Oct 2005
Posts: 201
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From: Churchville, VA
Need 5.0 EFI advise
I am in the process of building my 53 F-100 project. I have an 88 Cougar with a 5.0 EFI with an AOD that we are planning on using on this project. I am wanting a reliable cruiser with a little punch. The truck will be a summertime daily driver.
OK, here's my questions.
First, do I have Speed density or a Mass Air setup? How do I tell? I am not new the the 302's, but the EFI is a new animal for me. What will it take to switch it to Mass air if thats what needs to be done? I definitely want to keep the EFI.
Can I go with the B303 (or will it be E303 with the AOD) and possibly GT40 heads with the factory intake, or will the intake need to be switched out?
What should I look for in the GT40 heads? I have seen some on Ebay, but I am not sure what I am looking for, or, should I just have my stockers redone?
I am not necessarily on a budget, but I am trying to build this whole truck myself and save as much as I can.
Any advise you guys can give will be greatly appreciated.
Thanks
Bill
OK, here's my questions.
First, do I have Speed density or a Mass Air setup? How do I tell? I am not new the the 302's, but the EFI is a new animal for me. What will it take to switch it to Mass air if thats what needs to be done? I definitely want to keep the EFI.
Can I go with the B303 (or will it be E303 with the AOD) and possibly GT40 heads with the factory intake, or will the intake need to be switched out?
What should I look for in the GT40 heads? I have seen some on Ebay, but I am not sure what I am looking for, or, should I just have my stockers redone?
I am not necessarily on a budget, but I am trying to build this whole truck myself and save as much as I can.
Any advise you guys can give will be greatly appreciated.
Thanks
Bill
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
I think that Cougar would be an SD EFI system.. but I'm not 100% sure. Does it have a cast piece with electrical wires comming out of it, in the air intake plumbing near the air filter? If so that's a mass air sensor.
If you don't have the meter, mass air convesion kits are available, or you could source parts from a scrap yard and DIY.
Even the stock intake should support 250HP, but you certainly can get more with other intakes. The late model 5.0 explorers had cast GT40 intakes, as well as the GT-40 heads you are looking for. Both these are good upgrades over the stock 5.0 pieces.
The 5.0 truck intake is another option, but it is taller than the car intakes so that could be an issue. The HP potential for this intake is an unknown quantity, but if runner volume is any indication is should work pretty well. The Holley Systemax intake looks to be a very close replica with a car style upper.
If you don't have the meter, mass air convesion kits are available, or you could source parts from a scrap yard and DIY.
Even the stock intake should support 250HP, but you certainly can get more with other intakes. The late model 5.0 explorers had cast GT40 intakes, as well as the GT-40 heads you are looking for. Both these are good upgrades over the stock 5.0 pieces.
The 5.0 truck intake is another option, but it is taller than the car intakes so that could be an issue. The HP potential for this intake is an unknown quantity, but if runner volume is any indication is should work pretty well. The Holley Systemax intake looks to be a very close replica with a car style upper.
