What size injector?
Thread Starter
Drifting
Joined: Nov 2005
Posts: 1,361
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From: Downriver Mi.
What size injector?
Hi,I 'm planning on appox 350 to 375 crank hp. will 22 lb. pink tops work or would I be better with 24lb.?
the car is a 85 350 ci.
the car is a 85 350 ci.
Last edited by MR NICE; May 28, 2006 at 05:39 PM.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
24lb Ford Motorsports bosch injectors would work fine in your application. And also bear in mind that the 24s will flow about 25.6 with a stock GM pressure regulator at 43.5 PSI. Fords are rated at a lower pressure.
Safety Car
Joined: May 2006
Posts: 4,290
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From: Salem NH
Originally Posted by tjwong
24lb Ford Motorsports bosch injectors would work fine in your application. And also bear in mind that the 24s will flow about 25.6 with a stock GM pressure regulator at 43.5 PSI. Fords are rated at a lower pressure.
Actually, just some of the 24's flow more. A bunch of us over at thirdgen.org sent out numerous sets of different size ford injectors for testing, and found that all sets were flowed at 43.5 psi.
If I recall, one members set of blue 24# flowed around 26lbs per hour, at 43.5psi.
-- Joe
Racer
Joined: Jul 2005
Posts: 433
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From: Minerva Ohio
I just installed 24lbs injectors in my 93 LT1 6sp. I replaced stock ones. I was having troubles with starting the car and had a tough time mainting a steady idle wether it was cold or hot. The car seems to run like a champ now. Great throttle response, smooth idle. But, I also have a reprogrammed chip from PCMforless.com.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by anesthes
Actually, just some of the 24's flow more. A bunch of us over at thirdgen.org sent out numerous sets of different size ford injectors for testing, and found that all sets were flowed at 43.5 psi.
If I recall, one members set of blue 24# flowed around 26lbs per hour, at 43.5psi.
-- Joe
If I recall, one members set of blue 24# flowed around 26lbs per hour, at 43.5psi.
-- Joe
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Pro
Joined: Mar 1999
Posts: 678
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From: Oslo, Norway
Hi.
The stock injectors of an 85 is 24lbs/hr.
The stock fuel pressure on the 85 is about 36psi. So by increasing the pressure of the fuel will make the stock injectors more than good enough for your power range.
The injectors are pintle types and are not that sensitive for fuel pressures in the high 40s
The stock injectors of an 85 is 24lbs/hr.
The stock fuel pressure on the 85 is about 36psi. So by increasing the pressure of the fuel will make the stock injectors more than good enough for your power range.
The injectors are pintle types and are not that sensitive for fuel pressures in the high 40s
Pro
Joined: Mar 2006
Posts: 583
Likes: 0
From: OKC OK
Ford fuel pressure is 39.5 PSI, and the FRPP injectors are rated as such. The gentleman that said 26# equivalent, with 43.5 is closest. I would run the 22's if they are flowing well, and trim it up with a little more pressure, if necessary. If they are old, it's almost as cheap to get a new set of FRPP 24's.