347 NA Injector size?

R

RIXX93GT

Founding Member

Oct 10, 2002

166

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Dayton, Ohio

Feb 5, 2004

#1

• Feb 5, 2004

• #1

Okay lets hear it....I have a set of used 24lb. injectors and a 76mm C&L MAF sitting in my garage. I also have a new 347 on its way. Do you think these injectors will be enough for the stroker or should I throw some 30's in her? Keep in mind this is a street strip car with AFR185's and Ed Curtis cam.

 

TIMMY2734

Founding Member

May 17, 2002

1,330

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36

Queens, NY

Feb 5, 2004

#2

• Feb 5, 2004

• #2

Id say go with a minimum of 30s.

 

Black331Stang

Active Member

Apr 29, 2003

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Long Island, NY

Feb 5, 2004

#3

• Feb 5, 2004

• #3

30s should be A OK

 

5spd GT

"the 5.0 owns all"

Founding Member

Aug 7, 2002

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Arkansas

Feb 5, 2004

#4

• Feb 5, 2004

• #4

Yep go 30's NA...

 

86Cobra

Founding Member

Jun 6, 2000

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Phoenix, AZ

Feb 6, 2004

#5

• Feb 6, 2004

• #5

At least 30s. I'd run 36s.

 

bluelx347

Member

Jan 14, 2004

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7

chicago

Feb 6, 2004

#6

• Feb 6, 2004

• #6

i am wondering the same thing would i be running too lean if i have 24 lb inj on my 347 that i am putting in the spring, i already have the 24 lbs inj in my engine right now so is there any way i can get away with keepign these

 

Michael Yount

Mustang Master

Apr 10, 2002

9,039

6

79

Charlotte, NC

Feb 6, 2004

#7

• Feb 6, 2004

• #7

Function of HP and fuel pressure guys. The 24's, according to ProM should be good for around 400-425 crank HP at 38psi. If your 347's are gonna exceed that, 30's should be plenty. Alternatively, you could increase fuel pressure to make the 24's 'act' like larger units. Go to Pro-M's website, select the 'meter sizing' tab and scroll down. They'll tell you how to calculate the change in effective rate with increasing pressure. Unless you guys are planning on spinning these motors up past 7000, I don't think you'll make enough power n.a. to need 36's.

 

DavidF

New Member

Nov 19, 2003

158

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Ventura, Ca

Feb 6, 2004

#8

• Feb 6, 2004

• #8

I run 30lbs on mine.

 

Smokedawg

Founding Member

Jul 6, 2001

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Feb 6, 2004

#9

• Feb 6, 2004

• #9

30's..

 

Black331Stang

Active Member

Apr 29, 2003

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Long Island, NY

Feb 6, 2004

#10

• Feb 6, 2004

• #10

30's..