Will i be able to run my stock injectors or should i upgrade?

If not, which size and brand would you recommend?

I don't ever plan on switching to a larger cam or heads with this car...

 

Stock injectors are fine. You are going to enjoy that cam. JMHO

 

Thank you BUBBA! you have been alot of help to me... Thank you!

 

30lbs will be fine. Stockers run out of juice around 320-330rwhp. With that cam and supporting mods (headers, cai, etc) you should be right there.

If you know that your never going to do heads than dont go bigger than 30. If they may be in the plans look into 32's or 37's. Which would allow for some room to grow. I know you said your not going to, things change. Ask how many guys in the FI or n2o section how long they stayed with their current power level.

 

You better check with Ingineer or 97SS. I don't believe you need a 30 lb injector. JMHO

 

Stockers, mine were fine with my bigger CC306.

-Dustin-

 

my stockers made 360rw

 

would it hurt to get the 30# svo's?

 

Won't hurt...30 lbs nice, but not absolutely necessary. The stock 24s are pushing the envelope with 400 at the crank --- 227 cam and heads, etc should be around that area. Depends on whether you want to spend the money. JMHO

 

will i make 400hp at the crank? i would be very happy with that... i may have to start a new thread...
i know someone with a wheel dyno but how would you go about getting the accurate output horsepower of the engine?

 

If you go with just the cam, rockers, headers, you are probably looking at around 370-375 at the crank. With ported heads, probably another 30-40.

One really never knows. I don't know. According to Ingineer, if you take what you think you are getting at the crank, e.g. 375, and multiply it times .07 which I presume will give you a duty cycle of around 70%---which is good, you wind up with an injector size of around 26+-. So a 28lb would work well. If, however your est. crank hp with an M-6 is around 400 (around 345 RWHP) you would be looking at a 28-30 LB injector working at 70% duty cycle. I.e if you go with too small of an injector, you wind up getting closer to 90-100% duty cycle which compromises the longevity of the injector as well as the efficiency of the combustion process due to a less than desirable spray pattern. I think. JMHO

 

Stock injectors will be fine. I was fine with them and probably had some room to spare. I've got 32# injectors now because of the heads and shorty headers. I'd bet that your max rwhp is in the 320-330 range, so 400 at the crank is not likely unless you run ported heads.

I'll ditto the comment that you will like the cam. To me it's the subtleness of the idle that makes it special. Just as much power as a hotcam without all the lope. Good sleeper material.

 

I'm running a 227 cam with 1.5rr's, LT headers, no cats, and CAI on an otherwise stock engine. I have the trans set to shift at 5800. I find that I'm maxing out the stock injectors. I've seen 99+ percent duty cycle and 20ms pulsewidths at WOT and high revs. The fuel pump maintains good pressure at all times. If you do the math, at 6000 rpm 20ms is two crankshaft revolutions. That's all the time you get for an intake stroke so the injector has to do it in less time even without taking into account the duty cycle considerations mentioned above.

Overall, I've been very happy with the way it runs. Nice idle, good power, decent mileage. New injectors should arrive any day.

 

IMHO, go with the upgrade Injectors.

PS.. Cam LOPE rules!!!