ivan c

What power level are 83 lb injectors good for ?

3.8redbird

iTrader: (3)

Supercharger or turbo?

ivan c

Supercharger

3.8redbird

iTrader: (3)

http://www.corvetteinjectors.com/calculator.html

bout 870fwhp at 43.5psi fuel pressure

chasgiv3

iTrader: (1)

I got 907rwhp with turbochargers but the baseline fuel pressure was set higher. I've got a TH400 and 12 bolt.

ivan c

What size is your Injector 83lb ?
That is some nice power that LQ4 is making,how much boost ? I have a LQ9 hope it makes 800 - 900rwhp with vortech YSI,did your heads lift ?
What TH400 you have ?
Thanks for the info

3.8redbird

iTrader: (3)

If you bump the fuel pressure up to 58psi and the injector is rated at 43.5 then it becomes a 96lb injector and can support ~1150fwhp so 950-1000rwhp should be doable

chasgiv3

iTrader: (1)

Boost stopped at 23PSI limited by injector. These are 80lb injectors. I've never had a hint of head issues and believe it or not I've had stuck wastegates that probably cranked boost to 26-28PSI. I've actually melted electrodes from lack of fuel and high lean conditions. I didn't stay in it thank God. Felt it go crazy HP and got out of it. But dyno was was 23PSI and that's where I got my HP numbers from.

Putting in 160lb high impedance injectors on Thursday and having it tuned by SPEED INC. I'll see what she does with 25PSI or maybe even a little bit more.

3 seasons without fault from my heads. Not bad at all. More HP so we'll see if the heads have issues.