injectors too small??

egan_gt

New Member

Apr 14, 2005

37

0

0

hibbing MN

Apr 25, 2006

#1

• Apr 25, 2006

• #1

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

SN Certified Technician

Aug 8, 2003

8,015

1,613

194

NJ

Apr 25, 2006

#2

• Apr 25, 2006

• #2

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.

 

J

jjd975

Founding Member

Jul 17, 2000

4,236

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0

louisville,kentucky

Apr 25, 2006

#3

• Apr 25, 2006

• #3

30s are plenty.

 

Grn92LX

Fidanza Man!

Founding Member

Jan 14, 2001

6,819

64

129

New York

Apr 25, 2006

#4

• Apr 25, 2006

• #4

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

15 Year Member

Mar 31, 2005

4,933

101

124

Seattle

Apr 25, 2006

#5

• Apr 25, 2006

• #5

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

jason

 

5spd GT

"the 5.0 owns all"

Founding Member

Aug 7, 2002

9,516

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99

Arkansas

Apr 25, 2006

#6

• Apr 25, 2006

• #6

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

 

1

1SLO306

My 97 GTP owns you ALL!

Mar 31, 2005

904

1

17

Muhlenberg, ky

Apr 25, 2006

#7

• Apr 25, 2006

• #7

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