Injector size?
 

I'm trying to figure out what injector sizes would be good for my build and which way to go.

Here is the basics
226/234
226 ai 243's
Full Bolt ons
Ported fast 102/102
ractronix fuel pump kit

That is for now but If I ever go through the short block it's getting a medium dry shot and I don't want to buy things more than once. Thanks guys.

Dry shots are lame.

42# green top SVOs

When buying injectors, keep in mind at which Fuel Pressure PSI they are rated at.

Theres lt1 FP and LS1 FP which are different.(43.5psi /58psi)

...so an injector that is rated at say.. 30lb/hr at 43.5psi is equal to 34.64lb/hr at 58 psi


I had Racetronix 37# ones (43.5psi rated) and they worked out to about 42#@58psi in my old LS6 with a big cam and almost all bolt ons, and my duty cycle on them were fine.

42-46 rated will do you fine. I would go with 46's to have the fuel for future mods above what your list is.

So does anyone know where I can get the best deal?

Have the stockers resized. . .

Get the FAST 36lb/hr injectors, they are thin body and 42lb/hr at ls1 fuel pressure. You will need thin body injectors to fit onto a FAST 102 intake.

seimens injectors for aftermarket, they will be the cheapest & most reliable. Make sure you purchase with correct connector.

I forgot about fuel rails, are their other options then the ones by fast? Thanks guys.

for that hp range i think youll be ok with the stock rails.

There junk ive done back to back dyno testing....

I would do a set of 42lbs there around 48 @ 58psi gives you room to grow. Don't waste your time on a dry shot.

What about these? http://fuelinjectorconnection.com/sh...&productId=233

http://fuelinjectorconnection.com/sh...&productId=203

http://fuelinjectorconnection.com/sh...&productId=101

http://fuelinjectorconnection.com/sh...&productId=179

I'm on a really tight budget but don't want to buy crap or buy twice. Thoughts?

Also I had to go with an ls6 intake could I get away with maxing the stock injectors out for a while? I'll be upgrading the fuel pump asap...

The first two are for cars that make a little bit of power. You can run stock injectors forever, you just can't go WOT. You would have to be retuned when you get new injectors.

Yeah..I figured they would be big.. I just sent them an email asking for a recommendation..