EFI performance up grades
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Elder User
Joined: Jan 2008
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From: N.W. Mo.
EFI performance up grades
What can be done to a mid '90's EFI 460 to get a little more performance from it. Not looking for anything radical but would like to wake it up some.
Would a cam be lost with the computer controls and what would be gained by upping the compression.
All my past exprience with performance is with carbureted engines and I suspect the rules all change with dealing with computer controlled performance.
Thanks fr all input.
Richard
Would a cam be lost with the computer controls and what would be gained by upping the compression.
All my past exprience with performance is with carbureted engines and I suspect the rules all change with dealing with computer controlled performance.
Thanks fr all input.
Richard
Laughing Gas
Joined: Oct 2003
Posts: 896
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You can look in the usual places, headers, free flowing exhaust, gearing. There are cams that will work well with the sdfi, some of the specs are on other posts, and cam manufacturers can help as well. What are you looking for performance wise? Towing, speed?
I have a post further down about basic tuning, if there are any replies to it they may help you as well, Matt.
I have a post further down about basic tuning, if there are any replies to it they may help you as well, Matt.
Senior User
Joined: Mar 2008
Posts: 318
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Here is a similar thread I started recently
https://www.ford-trucks.com/forums/7...wing-mods.html
I'm going with headers, the Crane cam, fresh valvejob and slightly milling the heads. Already have a 3" catback exhaust and a K&N filter kit, I'll bump the exhaust to 3 1/2" whenever I find a cheap tailpipe. Porting the heads is another possible boost in HP/TQ.
https://www.ford-trucks.com/forums/7...wing-mods.html
I'm going with headers, the Crane cam, fresh valvejob and slightly milling the heads. Already have a 3" catback exhaust and a K&N filter kit, I'll bump the exhaust to 3 1/2" whenever I find a cheap tailpipe. Porting the heads is another possible boost in HP/TQ.
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Elder User
Joined: Jan 2008
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From: N.W. Mo.
Thanks for the replies.
I guess a little more background would help.
This will be a ground up build. I have a 460 out of a 1976 E350 that the machine work on the block and crank has been done. I haven't bought any parts yet and would like to put it together for EFI.
I was thinking of getting heads and manifold from a 90's efi engine and going from there. It will go in a 50's F series pickup probably with a 5 spd manual and not see any towing.
I am not a big fan of headers and also not looking for all out performance. Can I do some work on the heads myself to open the exh ports up a bit and make some useful improvement there. Also what pistons to get a C/R that will work well with the computer controll and EFI. I know I could do this with what I have carbureted and get a very nice performing engine pushing 400 HP with little trouble. Can I do the same with the factory EFI set up.
I guess a little more background would help.
This will be a ground up build. I have a 460 out of a 1976 E350 that the machine work on the block and crank has been done. I haven't bought any parts yet and would like to put it together for EFI.
I was thinking of getting heads and manifold from a 90's efi engine and going from there. It will go in a 50's F series pickup probably with a 5 spd manual and not see any towing.
I am not a big fan of headers and also not looking for all out performance. Can I do some work on the heads myself to open the exh ports up a bit and make some useful improvement there. Also what pistons to get a C/R that will work well with the computer controll and EFI. I know I could do this with what I have carbureted and get a very nice performing engine pushing 400 HP with little trouble. Can I do the same with the factory EFI set up.
Fleet Mechanic
Joined: Feb 2002
Posts: 1,483
Likes: 273
From: Tulare U.S.A.
Get heads and intake manifold off a 93 or newer 460, they have biggers valves and ports than the older EFI stuff. Also get the exhoust manifolds while your at it, they are diffrent than the carbed manifolds.
Go here Re-In-"Car"-nation High Performance and Automotive Repair/index and pay $25.00 for the best step by step home porting instructions with pictures. The porting will make a big diffrence and this is the best place to go for bigblock Ford porting instructions. And cam and headers are a good idea. If you go with headers you will have to have EFI flanges put on any that will fit in a 76 pick-up because the carbed headers wont seal up the ports are diffrent.
Leadmic
Go here Re-In-"Car"-nation High Performance and Automotive Repair/index and pay $25.00 for the best step by step home porting instructions with pictures. The porting will make a big diffrence and this is the best place to go for bigblock Ford porting instructions. And cam and headers are a good idea. If you go with headers you will have to have EFI flanges put on any that will fit in a 76 pick-up because the carbed headers wont seal up the ports are diffrent.
Leadmic
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