Going to start buying parts here and there for my new build, 347 stroker. It will be with a boss block or Dart, still in the air on that. Current setup is Trick Flow top end kit(heads, stage 1 cam, track heat upper/lower intake, 1.7 rockers). Car also has a S trim with power pipe.
Couple qusetions:
1. Currently running 38 lb injectors, what size will work best with new setup? 42, 55 or 60's?

2. Who makes the best bang for the $ on fuel rails?

3. Porting heads, I hear there is a guy by the name of Gill in Riverview that does good work, any other suggestions?

4. Currently have 70 throttle body, will I need to up that?

Also, has anybody had any experience with the G-Force kit for the tranny?

 

A & S Machine. If you have a year and an ass load of money, Gill can do it. I think there are a lot better people out there, personally. He WAY overcharged me to do a 306 a while back. I'll never go there again. He is mainly into the roundy-round stuff.

 

Before I bought a bunch of new FI stuff, I would bolt it together and get it tuned. A tuner will tell you how close or over taxed your inectors would be

 

If your going to have the car professionally tuned, 60lb injectors are the way to go, hands down. They will support the power you will likely make, and don't have any downsides.

FYI, Ford Racing now offers an 80lb injector for a reasonable price. I don't have any experience with them yet, so I can't say much about them, other than they are available.

Brian
EFI-Unlimited

 

There's your answer from the man that would know.
Just for my lack of FI knowlege....will a stock ECU support the 60's or even the 80's? In you experience where is the limit of a stock ECU?

 

Define your power goals before you start. Things can get out of hand quick!

In my opinion you should take a good look at AD Performance or Fordstrokers.com for your 347. If going with a good block, why limit to only 347?
Total Engine Airflow for your TW heads. You could sell your TW heads on the corral and buy new 205 heads with the proper springs for your application. Or send your heads to TEA and have them cnc them. With enough boost you could run deep in the 9's with the heads you have.
60's are high impedence(sp?) and the factory ecu will run them but you will need a tune/chip. It is when you get into the low impedence injectors that you need a driver with the stock ecu.
Glenn's Performance makes some nice fuel system stuff.
How much power are you wanting to make?

 

With a blower/turbo a 70mm tb will take you a long ways.

 

The 60lb and 80lb injectors are high impedence, drop in replacements. Any factory ecu can run them.

As for a limit to the stock ecu, there aren't many. You can currently buy 96lb high impedance injectors (link below), and if you need something bigger, you can always add a driver module for about $250. Then you can run the big boys (160lb+).

https://www.tamparacing.com/forums/i...injectors.html

For a Ford EEC, you will need a MAF sensor that is adequate. You can currently buy off the shelf MAF sensors that will support 1000-1200hp. More is easily doable, but it will need some special attention.

Probably the only real 'limit' to the Ford EEC is RPM. The A9L I have heard will tap out around 7500RPM. You can install a high frequency crystal and get a little more out of it, I'm not sure how much.

I am pretty sure the new generation PCM's in the 2005+ Mustangs could blow past 7500 RPM without blinking. In the case of those PCM's, there is no real limit to what you could run with it.

Brian
EFI-Unlimited

 

If I can ever finish this car, I will do a nice boosted FI

 

haha For Sure Brian, I know some guys spinning NA 4V's with lighter Cast Cranks and Aluminum fllywheels to over 8K with the EEC-V and the 05+ PCM's are even more refined!! And I agree for the OP to get some High impedance 60's with Aeromotive Rails!