stealth71

iTrader: (15)

Will my stock '02 injectors hold up to 450rwhp NA? I plan on spraying down the road, but it will be a wet direct port kit. What is the cut off on stock injectors before the are maxed out? What size should I run if I need to change?

Sigforty

I can tell you that my Z06 is at that hp level already and the stock injectors are at 105%. I think some 32 lb injectors would be a safer choice.

black01_WS6

iTrader: (13)

go with some 42's it gives you a little bit of breathing room for more mods.

stealth71

iTrader: (15)

Ok so I guess I need injectors too now. What about the folks that say let the tuner decide?

Any reccomendations on injectors?

Black Plague

iTrader: (13)

With a stout 450 hp get some MSD/Holley 50's or Motron 60's! They are a better injector compared to the disc style 42.5 009's! And of course see if your tuner can tune for them first! But I say go big and tune! Both of these injectors perform really well at low duty cycle.

BriancWS6

iTrader: (18)

I have the Racetronic 42 lbers, they are way more than I need on motor, but I got them to have room for the dry shot.

SS1875

iTrader: (34)

SVO 42# injectors here and currently 500+ HP NA. My tuner told me they are one of the easiest injectors to tune with.

Urban Legend

iTrader: (5)

Go straight to 60s because you never know what the future might bring.

formula305

iTrader: (7)

Im running red tops with 442rwhp and they are only at 82% duty cycle.

cantdrv65

iTrader: (3)

Im running the SVO30's with 450+rwhp....about 80% duty max....

Old Geezer

iTrader: (3)

please. How are you supporting approx 500FWHP, with a 30# inj, and only seeing 80% DC??

fastGBcamaro

iTrader: (10)

Im running almost the same numbers with the same size injectors. I think a lot of people go way too big with injectors. I understand getting 42's if you are planning more modds or a dry shot of N2O. Also I believe that the SVO injectors are rated at a lower fuel psi than we use on our LSX vehicles so a SVO 30# injector is actually equivalent to a 32or 34 # injector on our cars.

2scoot

iTrader: (2)

A few others have said it....42's. Go too big and you have idle issues.

Asmodeus

My GN has 72#'rs. Very very hard to get them to idle well on a batch fire DFI.

Mike @ New Era

iTrader: (10)

If you are at 450 whp , go #42's or at least #30's . #30's will max before 500 whp so at least with the #42's you will have some room . Lucas and SVO are the same to tune with , I have never noticed a difference in the LS1 on these at this flowrate .

brad8266

iTrader: (23)

Go with 42Lb'ers. They are cheap, work well, and can supply fuel for a lot of power.

stealth71

iTrader: (15)

Who has the best deal on a set of 42# quality injectors? I read some bad stuff about the racetronix disc style, should I avoid them?

Are these any good? http://cgi.ebay.com/ebaymotors/8-Bos...QQcmdZViewItem

SSilverSSurfer

iTrader: (8)

^^^like he said above, whats a good injector to go with?

slow trap

iTrader: (22)

i have the 42 lb delphi/lucas injectors and they have worked great for the few weeks i got to run them before i spun a bearing

98Z28CobraKiller

iTrader: (17)

I got my 60's idling good but I think that they are causing a very annoying surge in the 1800-2200 RPM at 3-6% Throttle position. I am trying to find someone to swap them for some 42 SVO's. Unless you are gonna go FI or a huge dryshot, you will not likely ever have a need for 60's.