jpolser

iTrader: (3)

I have a stock LS2 with headers and dual 3" exhaust. I have to buy injectors of some type since the stock ones won't work with the LS1 harness.

42lb injectors seem to be the best injector for the money. I used the calculator to find out that with 450bhp, 58psi rail, .5 bsfc, and 42lb injector I would have a max duty cycle of 58%.

That looks great, but will the pulse widths be too small at low rpm? I am guessing that would be a problem with a "too-big" injector, but I have no experience with LSx engines or larger injectors prior to this project.

Thanks,
Chris (using my brother's computer)

Grimes

iTrader: (3)

There are a decent number of people using 42's and I think you will be fine with them.

https://ls1tech.com/forums/fueling-injection/419987-42-injectors-too-much-h-c-car.html

jpolser

iTrader: (3)

Thanks, I found that thread before. After looking again I see several ~400rwhp cars using them, so maybe it is okay. I don't want to buy different ones in the future, but I may not change the cam for a year.

Bolt on LS2 vettes do 390-400rwhp, so maybe its fine.