injector size for 5-6 psi boost on a stock block

Donny Hancock

New Member

Aug 3, 2012

19

0

1

vancouver wa

Dec 24, 2012

#1

• Dec 24, 2012

• #1

hey guys i just put in a vortec kit on my 93 lx (http://www.summitracing.com/parts/vor-4fa218-010l/overview/year/1993/make/ford/model/mustang) as of now it has the stock fuel system and stock mafs... i have a trickflow intake and 70mm throttle body and spacer other then that its pretty much stock im lookin for the best injector size for a good street set up i know ill have to get it tuned but just was wondering if any one had a same type build with so good info i could use thanks all

 

Dino Dino Bambino

15 Year Member

Jun 13, 2007

1,672

89

79

Cyprus

Dec 24, 2012

#2

• Dec 24, 2012

• #2

A set of 30lb'ers should do nicely for now.

 

84Ttop

They make new pistons every day, so why worry?

5 Year Member

Jul 2, 2009

5,222

3,254

204

South Jersey

Dec 24, 2012

#3

• Dec 24, 2012

• #3

30lb should work, I would use 42lb though, when you upgrade the heads you will need them for sure. It's cheaper to only buy them once. And don't forget the matching maf.

 

Reactions: 90lxcoupe

Bill Gordon

Active Member

Sep 20, 2012

119

12

29

Broomfield, CO

Dec 24, 2012

#4

• Dec 24, 2012

• #4

I'm getting ready to install a KB blower in my 91 at 8 lbs. After talking to a few dyno shops, 42# was the recommendation along with a 255 lph fuel pump, a matching MAF and a tune.

 

Donny Hancock

New Member

Aug 3, 2012

19

0

1

vancouver wa

Dec 24, 2012

#5

• Dec 24, 2012

• #5

thanks guys i was thinkin about the 3o lbs but more and more people are sayin to go with the 42s and yes when your on a budget buyin them once is the way to go lol

 

Gearbanger 101

Straight Outta Locash

20+ Year Stangneter

Aug 10, 2002

9,457

1,377

234

Ontario, Canada

Dec 26, 2012

#6

• Dec 26, 2012

• #6

If you never plan on making more than about 360rwhp with the car, than the 30lb/hr injectors should work fine. If you ever plan on seeing any more than that...jump up to a set of 42lb/hr injectos and be done with it.

Truth be told...5-6psi isn't that much. You could probably get away with just upgrading your in tank pump, keeping the stock 19lb/hr injectors and adding a Vortech FMU. It won't be as bang on accurate as a set of big injectors and a dyno tune, but it'll still work quite well and be a whole lot cheaper.

 

madspeed

Colonel Mustard

Founding Member

Nov 29, 1999

8,914

1,332

204

a van down by the river

Dec 26, 2012

#7

• Dec 26, 2012

• #7

i will be upping to 60's soon and will part with my 42's at that time

 

Donny Hancock

New Member

Aug 3, 2012

19

0

1

vancouver wa

Dec 27, 2012

#8

• Dec 27, 2012

• #8

thanks for the info guys it has me doin a bit more research and thinking about long term goals with the ca i think 30lb is gonna be best for me and Gearbanger io love your avatar lol HULK SMASH