Injector size for a 351? Guys with 351's get in here....

[DougNuts]

I would probably go with 36s on that motor.

Where are you getting your longtubes from? Do they have an EGR bung?

 

[nmcgrawj]

Naw they aint on the car yet man. HaHa I wish....

I will be runnin bbk 1 3/4" long tubes for foxes.....no egr bung on passenger header. Whats your setup gonna be Dougnuts?

Who sells stock type high impedance injectors in 36lbs ?



Thanks guys

 

[tjm73]

I'd not be comfortable with 24 lbs. strong 302's need 24lbs. 30 lbs. maybe, but 36 would be better. What ever you choose though definitly get the correct MAF (no brainer, but had to mention it).

 

[DougNuts]

Whats your setup gonna be Dougnuts?

Not 100% sure, but I'm leaning towards a 10:1 compression 393 with AFR205s, kooks headers, Trickflow 351W intake (portmatched to the heads), fox Accufab 75mm TB, 80mm pro-m, 36# injectors, FTI cam. I'll be happy with anything over 400 at the wheels.

 

[VibrantRedGT]

I've got 42's for sale.

 

[FEESER 94 COBRA]

Wish i would have known about the inkectors i just paid $400 for mine

 

[VibrantRedGT]

Wish i would have known about the inkectors i just paid $400 for mine

Wow, I guess the price has gone up. I bought mine from JD's Performance for $300. I'll take $180 for these with about 1000 miles on them. I even shrink wrapped them individually as I took them off the car.

 

[nmcgrawj]

I would be scared that would be too much fuel. Are those the stock type high impedance injectors or whatever?

Can someone explain what stock type high impedance injectors means and what other types there is?

Thanks

 

[Joes95GT]

I would be scared that would be too much fuel. Are those the stock type high impedance injectors or whatever?

Can someone explain what stock type high impedance injectors means and what other types there is?

Thanks

Impedance is resistance. Resistance in measured in ohms. The greater the ohm, the more resistant that certain electrical device is.

High Impedance injectors have coils that have a high impedance to current. They are generally 14-20 ohms of impedance.

Low Impedance injectors are generally 3-5 ohms. Roughly 1/4 of the impedance. This means that with the low impedance injector you will have 4x the current and therefore 4x the coil "power". This means that the injector will have more "strength" to pull the pintle open.

More strength to pull the pintle open means more fuel, over a longer period of time, hence the rating of fuel injectors in lbs/hr.

I don't know much about setting up a car for low impedance injectors other than I know they need a separate injector driver, separate from the car's current PCM.

I hope I didn't confuse you...

Joe

 

[nmcgrawj]

no you didnt, i understand it. Will the 42's be too much fuel or will reducing the fuel pressure by alot fix it?