FUEL FROM THE SD EFI SYSTEM
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New User
Joined: Dec 2010
Posts: 11
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From: Coliorado Springs Co.
FUEL FROM THE SD EFI SYSTEM
I know this seems to be an endless debate over the efi's in the 90's. I have picked up a 96 460 efi with the speed density efi system on the engine. It will be installed in my 59 F250. I know the engine only puts out apx 250 HP,and I want the HP to be 450 avg. I also have learned that the SD system is designed for the HP it makes from the factory. I Imagine Ford has an RV type cam that can be put in. I dont think that is going to get me where i want. Can the SD system / EEC IV be re tuned with a larger cam without killing the vaccum that the SD cam needs to function? Or do I have to go MAF? Trying to stay on a budget, but what would be the best apporach? I do have all the goodies needed to run the EFI(computer, harness, etc.)
Appreciate your input................
Tom
Appreciate your input................
Tom
Junior User
Joined: Dec 2007
Posts: 89
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From: Lake Havasu City, Az.
The speed density system is a little tricky, as you stated. I am pretty sure that it can be chipped to attain what you want, but the SD will always be a limiting factor. I would think putting a 5.0 computer on it would be the best way to go. I would call Steve @ Powertrain Dynamics in Huntington Beach, Ca. He is one of the best EEC-IV tunes around, IMHO. He is a one man shop, so leave a message, and he will call you back (usually the next morning).
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New User
Joined: Dec 2010
Posts: 11
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From: Coliorado Springs Co.
sd to maf or?
Ok guys,I think I am convinced that the SD would hinder my plans. I do want the benifits of FI,so I will start with contacting powertrain dynamics and go from there.Thanks for the support !!
Hotshot
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
My 460 is at 436hp, 489ft/lb torque. Carbed
With the 69 (c9ve) hi compression heads. I could have had another 50hp if I had picked the right cam.
Don't know how u can do this with the lower compression efi heads.
Sam
With the 69 (c9ve) hi compression heads. I could have had another 50hp if I had picked the right cam.
Don't know how u can do this with the lower compression efi heads.
Sam
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Joined: Dec 2010
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From: Coliorado Springs Co.
EFI OR CARB
Sam, good point. I just haven't looked into what another set of heads would cost. I am going to completely tear down the engine to refresh it, original (65,000 miles) so maybe I should keep this in mind. Does anybody else have any ideas on what heads to look for if I go carb? Or are the c9ve's the way to go? Will have to change pistons because of the low compression they make or will the combustion chamber size adjust it?
Tom
Tom
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