330racing

iTrader: (11)

Working on putting together a h/c package and expect 420-430rwhp. I also have a 100 hp dry shot. I think the 37#delphis will work but should I step up? I dont really plan on any mods after these. Is there any drawback to using the SVO 42#?

M6WS6

iTrader: (1)

Not really, I think it might take a better tune though. As long as timing etc and the air/fuel is correct, shouldnt be. Yes it might be over kill, but if you look at my sig, Im overkill too. I plan on nitrous here w/in a few months, so thats why I went so big, and fuel is definitly something I dont want too little of

Matt@HSW

iTrader: (14)

The 37lb delphis would support right around 650 RWHP with a dry shot.

Matt

330racing

iTrader: (11)

Thanks Matt. I suppose I could drop down a bit then. How much rwhp would the Delphi 32#ers support wiht the dry shot? I should have 500-530 rwhp with the nitrous

RedHardSupra

iTrader: (1)

42s are perfect, leave it be. can be had for cheap off ebay too.

98Ztwentyeight

iTrader: (2)

if they are ford svo 42's they are probably around 48.5 lbs at gm fuel pressure! something to think about!!

SRPerformance

Just fitted 36lb (43.5psi) injectors scaled to 58psi on 400rwhp LS1, was running 78% duty afterwoods. So if you want to follow the 80% rule you will need soemthing bigger!

gametech

iTrader: (1)

My first mod to my gto was 60# mototron injectors. I wanted to dial them in properly before installing the turbo. If 60# injectors give no problems on a car before the other mods, I don't see where 42# injectors should hurt. This is assuming a retune of course.

Viper

iTrader: (6)

42's here, no issues at all. Plenty of room for expansion.

bshell

iTrader: (24)

Go with the 42s (SVO or Lucas). Also go over the rest of your fuel system to make sure its in good shape. Will you be installing an aftermarket fuel pump / wiring kit? Good luck with the h/c!

ninobrn99

iTrader: (8)

42#svo here and you can ask RHS that im not using them to their full potential im a cam only ls6.

330racing

iTrader: (11)

It looks like the 37s or the 42s will work for my application. I will probably get whichever is cheapest!!! I have a racetronix pump and harness sitting on my living room floor waiting for me to get motivated to put it in.

ninobrn99

iTrader: (8)

37's are a bit harder to tune from what ive read. there are plenty of threads and sites that have the IRF's for the 42# injectors.

Spinmonster

Any low rpm reponsiveness lost from using a bigger injector? ...IE...is a smaller injector more responsive?

LastBlack02SS

iTrader: (21)

Look at the mods in my sig. I just got everything for the heads and cam swap done this weekend by Kevin (superchannelkev here on the forums) and Crit at GS Performance and tuned by Marcin (redhardsupra here on the forums) at GS Performance. The 42lb SVO injectors are amazing. With the heads and cam install, the injectors were only running at 60% duty cycle at 6000rpm. They are great injectors for tuning (so i've been told, as well as I've seen with my tune), and offer great ability for expanding without being too overkill. Get them, they will work great. I'll be doing the SC and intercooler setup addition soon and will make a new post regarding this stuff (just a side note). Last thing. All 3 of these guys at GS Performance are amazing. If you want the best tune ever, and the best install without sacrificing any quality, these guys are the best and incredibly fair pricewise, and very personable. PM me or these guys if you have questions about my setup or your own.

pushinfreight

My 42lbs green tops have done great for me. They have supported 450 rwhp head and cam setup with ~60% duty cycle at wot. You just have to have the tuner scale for the larger injector size and they will work fine. I will be spraying about 150 dry on my setup and do not for see any problems with them.

WS6FirebirdTA00

iTrader: (33)

well i cant get rid of my rich condition on decel with 42# fords, no idea why but it wont go away

227Hawk

iTrader: (1)

I've been following your posts,i'm not sure why you're running so rich on decel? Are you sure the injectors are'nt leaking??

camarokid94

iTrader: (2)

do the 42lbs green tops just bolt in/ what do you have to do to get them to fit? i will also be doing a h/c swap soon and run a 200 wet shot. i was gonna do the 42 and jsut want to know what need to be do to get the in. i have a racetronix pump and hot wire kit in already.

WS6FirebirdTA00

iTrader: (33)

if they were leaking then it would be running lean, but either way they arent leaking at all. i had nino check out his and he get 1.8 ms on decel just as i do. he is slightly rich as well. i just think they cant shut down any lower than that. anyone else have pulse width info on decel?