injectors too small??

[egan_gt]

I am just getting ready to slap my 347 together and I got asked about something. I ordered a C & L 76mm mass air and 30lb injectors. Is this to small of an injector to be running? I was told maybe to jump into the 42's with my setup. Any advice or help would be great. The set up will be a 347 short block, AFR 185's, z303 cam, Edelbrock Performer Rpm intake, and so on.... help???

 

[2000xp8]

30's are fine.
They will support up to around 450 NA rwhp. And you look to be around 75 rwhp short of that.
It's when you have a supercharger they are good for less.

 

[jjd975]

30s are plenty.

 

[Grn92LX]

You'll be fine with 30's for that combo.

I run 30's in mine also. I took a quick glance at the duty cycle on my PMS screen once at appx 5000 rpm and it was 70%. I haven't checked at 6,700 rpm yet This is at stock fuel pressure, fyi.

 

[vristang]

30's are still enough for my 408
but I do have a mild cam

jason

 

[5spd GT]

I second, the 30's will be plenty...

 

[1SLO306]

yup agree with all the above, 30's are plenty