Carb Manifold to Injection
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TECH Junkie
Joined: Jan 2003
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From: Fresno/Chico
Carb Manifold to Injection 
So what is involved in converting one of these to fuel injection. I mean besides the obvious stuff like fuel injectors. What would one do for a throttle body (it would be in a truck so; LOTS of room under hood), any vacuum lines, and I assume that EGR aint gona happen. I would also want to use the stock PCM
Im ploting on something
its really not that dificult, I ran the above manifold on my last car. If you are wanting to use stock pcm with the MAF, then you need to run a large single blade tb with the elbow so that you can put the MAF inline. If you are going to run it in SD mode, then you could get away with runing a large standard 4150 flange throttle body. As far a vacuum line and what not, you would run the MAP sensor of one of the tb ports.
You have a truck so I assume you have the hydraulic brakes. That means you don't need to drill/tap a hole for the power brakes.
Just about any good machien shop can drill teh manifold out for the injectors, then you'll need to make the fuel rails. and either mae a new fuel system or adapt it to the stock fuel system.
Hope that helps. I did it, if you have a more specific Q, just ask!
Ryan K.
You have a truck so I assume you have the hydraulic brakes. That means you don't need to drill/tap a hole for the power brakes.
Just about any good machien shop can drill teh manifold out for the injectors, then you'll need to make the fuel rails. and either mae a new fuel system or adapt it to the stock fuel system.
Hope that helps. I did it, if you have a more specific Q, just ask!
Ryan K.
Thread Starter
TECH Junkie
Joined: Jan 2003
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From: Fresno/Chico
Originally Posted by smokinHawk
what is a 4150 flange throttle body, i havnt seen one before, anyone got pics
on harlans setup he has an 90* elbow, to a round throttle body.
on harlans setup he has an 90* elbow, to a round throttle body.
Do you have any pics of Harlens intake setup?
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Originally Posted by smokinHawk
Yes what Elbo is that, part number?
and what throttlebody part number?
danka
and what throttlebody part number?
danka
The conversion costs about $450 if you have a shop do it. This generally includes the rails. and bungs.
Does that manifold flow better than the best ls1 injection manifold? I've never seen that done on an ls1. It is kind of funny to take a fuel injected motor, design a carb manifold for it, then converted back to injection. Whatever works, though.
elbow and TB are both from wilson
4150 to 105mm, 100° elbow, forward facing. Wilson's 105mm TB
rails are Aeromotive 5.0 mustang. I did the billet rail thing before anybody made anything for the LS1 directly. The spacing and angle happens to be the same, but you gotta flip flop the sides.
Manifold was drilled by WAR in house, so the factory injector angles remained the same.
It's plenty more than $450, worse if you count the manifold.
Flow, at 8000+ i'll take the short runners.
4150 to 105mm, 100° elbow, forward facing. Wilson's 105mm TB
rails are Aeromotive 5.0 mustang. I did the billet rail thing before anybody made anything for the LS1 directly. The spacing and angle happens to be the same, but you gotta flip flop the sides.
Manifold was drilled by WAR in house, so the factory injector angles remained the same.
It's plenty more than $450, worse if you count the manifold.
Flow, at 8000+ i'll take the short runners.
how would you run the MAP sensor of something like Harlan's setup? with the elbow and the carb intake? same thing with the power brake hookup?
Harlan - what is that regulator that is sitting in the middle of the lower portion of the intake manifold?
Harlan - what is that regulator that is sitting in the middle of the lower portion of the intake manifold?
Thread Starter
TECH Junkie
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From: Fresno/Chico
Originally Posted by y2khawk
rails are Aeromotive 5.0 mustang. I did the billet rail thing before anybody made anything for the LS1 directly. The spacing and angle happens to be the same, but you gotta flip flop the sides.
Manifold was drilled by WAR in house, so the factory injector angles remained the same.
Manifold was drilled by WAR in house, so the factory injector angles remained the same.
Originally Posted by GoldenVelvet
Did I read that right? 5.0 fuel rails are interchangeable with LS1 rails if you flip flop them?!
My MAP sensor is just connected to a hose on the sensor end, and into the base of the elbow on the other side. Drilled and tapped holes in the elbow for the sensor, FP regulator, etc.
The space ship looking thing in the valley cover plate is a relief regulator for my dry sump. Limits the crank case vacuum to a set level.
can you keep the wipers with that set up?
and matt, you lowered your engine 1" right? after you trimed the hood how much clearance did you have. do you think you can get away with keeping the engine at the stock location, and stock hood if you trim it?
and matt, you lowered your engine 1" right? after you trimed the hood how much clearance did you have. do you think you can get away with keeping the engine at the stock location, and stock hood if you trim it?
