Engine 1989 mustnag efi to holly sniper swap

Scottybronco

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hey guys I'm building a 5.0 for my 89 and I've decided to go with a holly sniper fuel injection set up rather than the efi set up... just wondering if anyway has done this do I have to change the distributor? any advice along the way would be appriciated thanks in advance

scotty
 
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Scottybronco

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Why are you going backwards in time to use a TBI? Your basically bolting on a electronic carburetor


because its self tuning and way cheaper than buying all the efi :poo: and tuning the car mass air flow throttle body upper and lower intake injectors and a chip and a tune is crazy efi set up is very handicapped
 

a91what

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What parts do you currently have for an EFI system? The sniper can only self learn with mild cams with a large cam it will hunt and act funny unless you get in there and manually tune the idle.
There are many other options that dont require purchasing half of what you listed.

Why dont you list what you have, your goals and how the engine is being built. Then i can give you solid advice
 

Scottybronco

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What parts do you currently have for an EFI system? The sniper can only self learn with mild cams with a large cam it will hunt and act funny unless you get in there and manually tune the idle.
There are many other options that dont require purchasing half of what you listed.

Why dont you list what you have, your goals and how the engine is being built. Then i can give you solid advice



welll have all the factory efi stuff the car came with


the long block is a aluminum head 170cc with comp 270 hr cam i dint really wanna use the factory Intakes and stuff after spending that amount on the long block.

would like to see about.350 out of the engine

thanks.for any advice never built.an efi engine before

scotty
 

Scottybronco

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Ok let's talk budget, what were you going to drop on the sniper system?


that's sort of my main complaint about that efi system is the cost even with gt40 intakes it's still more exspensive I feel like


interested in your advice thanks for taking the time
 

a91what

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As far as the throttle body is concerned the stock one will do just fine for now, or if you want one i have a couple 65mm explorer units i modified for a crazy dual TB setup i ran last year on a blower.
 

Scottybronco

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I appriciate all.the help and advice ..... will all of this.equipment plug and play... ie the mass sensor and will this just fire up and run well without having to tune this? I'm in canada aswell not a ton of stuff like this is available

scotty
 

a91what

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It should, you should be able to use the link and contact the seller, but with a foxbody ecu the injector size is adjusted with a MAF sensor calibration. so all of this should be plug and play with the stock ECU.
 

General karthief

wonder how much it would cost to ship you a pair
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Those Holley sniper and others like it are for cars that have a carb and you want to swap to fuel injection, our efi systems have a jump on them with the electronics already there and work with a good amount of bolt ons. Keep it.
 

Scottybronco

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hmm i didnt even look at it to be honest with you, I assumed it was for a foxbody... the 4.6l engines are tuned a completely different way.

https://usedautopartsdepot.com/en/l...-injectors-and-granatelli-75mm-mass-air-meter
This one should work out much better for you, it has the injectors and the meter, no guess work. These will feed your engine just fine.

thanks again guys for help... basically my big set back was having to pay a ton to have it chipped and tuned. and :poo: if I have a mass air flow that's calibrated to.the injectors... the things should.run strong iam i correct in thinking that?
 

a91what

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No, your combo is not even all that wild to be honest...
Mine has a custom cam 575 lift 224i 236e duration at .05 on a 114lsa. Custom blower setup coil packs ect. Ect. Mine needs a custom aftermarket ECU, yours is a common build type and will run very well with the stock ecu.
 

a91what

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