jthunderz28

2002 WS6, m6, all stock outside of a lid,suspension, and a GMMG catback.

I believe the stock fuel injectors on an 02 LS1 were 28lbs.

The camshaft going in as stated in the title of the thread is an EPS 222/226 .597/601 lift i believe at 115+3

Is it absolutely necessary to buy new injectors. I WILL NOT be doing headers or heads.
All of my parts came in today and I'm pretty much ready to drop my car off at the shop.

Thoughts???

Detoxx03

iTrader: (14)

I would say no

z99ls1

iTrader: (12)

No you do not need injectors, but I highly recomend getting headers so that cam can breath.

jthunderz28

ok i'll let the shop know to hold off on the injectors. And I can't do headers legally because... I live in the great state of CA

Thanks for the input guys

01ssreda4

iTrader: (96)

You don't need them. But I would look at doing some maybe down the road for piece of mind.

99 Blue Bird

iTrader: (3)

you really should of chose a better cam suited to you. a single pattern cam is not gonna run its best with stock exhaust manifolds. EPS cut my cam and 408maros cam for exhaust manifolds and they are not single pattern cams. both of our cam specs are on norcal

z99ls1

iTrader: (12)

yea that's kinda what I was thinking. Should be kinda the opposite like 226/222 or something like that

99 Blue Bird

iTrader: (3)

mines a 218/230

z99ls1

iTrader: (12)

ha maybe im backwards. Im confused and tired lol

PREDATOR-Z

No, if your fuel pressure high and constant. Also as mentioned this cam is not the best for your exhaust manifolds.
Pick another with more exhaust split like CheaTR or derivative.

*02WS6TURK*

iTrader: (13)

You should be just fine with the stock injectors. I'm still running the stockers on my EPS 226/230.

01ssreda4

iTrader: (96)

Nobody is doubting what can be done. What is your duty cycle currently at with your stock injectors? What is the recommended maximum duty cycle of your injectors? At what duty cycle does the rate of injector failure increase beyond what someone considers average or accepted failure rate? These are actual questions we should be answering to help this poster find what he seeks. Not "it should be ok".

*02WS6TURK*

iTrader: (13)

So then answer them champ. Nice reply.

01ssreda4

iTrader: (96)

I know my stock injector duty cycle with a 220s cam, I know the SVO 30s duty cycle I replaced them with, and I know what my 42 pounders are at now with a slightly different setup but still cam only. Where would you like me to start?

farmington

iTrader: (14)

when you get it tuned, the tuner will be able to tell you where your present injectors are at (%duty cycle). You decide from there. If you're just getting a mail order tune, you'll probably be ok with the stockers.

jthunderz28

The cam is actually a 222/226, Do not go off the numbers in the title of the thread. I messed up when i typed it. The correct specs are in my first post.

I personally talked to Geoff at EPS for over an hour and a half over two days and this is what he recommended even with stock manifolds considered. I'm sure I'll be fine.

*02WS6TURK*

iTrader: (13)

You will. Of course some LT's would compliment it nicely. A local that has a baby cam like that with stock manifolds and it makes pretty good power.

99Bluz28

iTrader: (35)

Your tuner can let you know what your injector duty cycle is when he tunes it. Normally you'll want to keep it under 85%.

Hardtop

iTrader: (3)

You might want to check your duty cycle. I have the same cam and logged the car at the track. 99% duty cycle. Got my injectors re-sized by FIC. Will get them in the car soon. My car is a 2002 Z/28 that came with 28 lb injectors stock. I'm willing to bet you are out of injector.

DaFireMan

iTrader: (5)

Always always always check duty cycle! its easy to say that u will stay cam only until u get bitten by the mod bug again. i said i wouldnt by another fbody. wrong lol. i love em