EFI to Carb
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Logistics Pro
Joined: Jun 2012
Posts: 4,063
Likes: 2
From: Southeastern IL
I figured lol. I found this site: IST Products but they dont have a "kit". You gotta figure out what you need on your own I suppose lol
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
More trouble than what it is worth. OBD-I 49 State emission 7.5L trucks are hard to find. The Cali. MAF trucks were OBD-II, which presents another set of hurdles to overcome.
The Gen1 Lightning guys have proven it is not that difficult to make power with Speed Density. Keep the cam profile SD-friendly then you can make some serious power with a custom tune or install your own tuner and do it yourself. If you feel the itch to have a MAF equipped 7.5L truck swap on a MAF system from a 5.0/5.8L truck then invest in a tuner.
The Gen1 Lightning guys have proven it is not that difficult to make power with Speed Density. Keep the cam profile SD-friendly then you can make some serious power with a custom tune or install your own tuner and do it yourself. If you feel the itch to have a MAF equipped 7.5L truck swap on a MAF system from a 5.0/5.8L truck then invest in a tuner.
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Logistics Pro
Joined: Jun 2012
Posts: 4,063
Likes: 2
From: Southeastern IL
From what I read, it looks like I can change whatever I want on my engine as long as I keep my cam. Or at least get one thats made for SD engines. But the cams a big hold-back on these engines....
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Logistics Pro
Joined: Jun 2012
Posts: 4,063
Likes: 2
From: Southeastern IL
I need to get a book.... I feel like if I really understood what was goin on with our engines, then Id know what to look for when upgrading. Some guys say MAF is better, som say SD is better, some people have converted from MAF to SD! I DUNNO!!!
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Logistics Pro
Joined: Jun 2012
Posts: 4,063
Likes: 2
From: Southeastern IL
Changed my mind lol. After racing in the dirt drags, I wanna stay in the gasser class. And Iv got a weird itch to build a gas engine thatll eat a diesel!
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Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
General rule of thumb for these Ford Speed Density vehicles for a cam is keep the Lobe Separation Angle (LSA) in the 114 degree range. You can go a little wider, but stay away from anything less. With that said you are correct about the cam being a limiting factor, the factory programming cannot handle very much change before it starts operating outside of what it can compensate for.
Many have installed mild cams and headers on these trucks and gotten by with the factory tune. If it were my project vehicle I would budget for a custom tune even with mild upgrades. The factory programming leaves a lot "under table" that can be unleashed, thereby maximizing your investment in parts.
Take a little time and poke around the National Lightning Owners Club (NLOC) forums. Those cats there have run the gamut from stock, mild to wild engines all starting with the factory SD system on up to the high dollar aftermarket EFI. You have a 7.5L engine that is choked from the factory, it can be made to meet your goals without tossing on a lot of fancy parts.
Many have installed mild cams and headers on these trucks and gotten by with the factory tune. If it were my project vehicle I would budget for a custom tune even with mild upgrades. The factory programming leaves a lot "under table" that can be unleashed, thereby maximizing your investment in parts.
Take a little time and poke around the National Lightning Owners Club (NLOC) forums. Those cats there have run the gamut from stock, mild to wild engines all starting with the factory SD system on up to the high dollar aftermarket EFI. You have a 7.5L engine that is choked from the factory, it can be made to meet your goals without tossing on a lot of fancy parts.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Ford really has you backed into a corner with the 460/E4OD combo. For starters the engine itself isn't easily converted to carb with an intake swap.. the heads also have to be changed because of port allignment issues. And if you got past that then you have the computer controlled transmission to deal with, the existing computer can still be used but all the EFI engine sensors have to be installed on the carb intake or else the trans won't shift properly. So you're probably better off keeping the stock EFI setup and either getting a custom ground cam or strap a blower on it.
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Logistics Pro
Joined: Jun 2012
Posts: 4,063
Likes: 2
From: Southeastern IL
Soo... I can just throw a blower on there somewhere and bungee strap it to the engine and itll make power? Lol jus kiddin.
Anyways, I thought a custom burned computer was major $$$, like close to a grand...
Thats why I didnt even mention that part lol
Anyways, I thought a custom burned computer was major $$$, like close to a grand...
Thats why I didnt even mention that part lol
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Depends on who is doing the work. The price can be all over the board. Power costs money, how much do you want to spend?
Whether you are running Speed density or MAF and you plan on more than simple modifications you need to budget for a tune or purchase a tuner to do it yourself.
Whether you are running Speed density or MAF and you plan on more than simple modifications you need to budget for a tune or purchase a tuner to do it yourself.
Senior User
Joined: Aug 2001
Posts: 275
Likes: 1
From: Lexington Park, MD
Chris