SCT BA2400 meter and 42# injectors.

[Dark_5.0]

This is what my tuner told me to buy for my 331 stroker it should make between 430-460 flywheel HP naturally aspirated.

If anyone has anything negative to say speak up before I drop 500 bux on this crap.

[1989GT]

Good choice, it'll give you some room to grow when you decide you need more power. What's your combo going to consist of?

[Dark_5.0]

Originally Posted by 1989GT

Good choice, it'll give you some room to grow when you decide you need more power. What's your combo going to consist of?

M&R Street Thunder 331 stroker
Probe 10 to 1 forged pistons
Hand Fit Moly Piston Rings Childs & Albert 1/16 1/16 3/16"
Forged H-beam rods
Forged crank with nitride harneded journals
Digitally Balanced Rotating Assembly - 28.8oz Balance
Clevite Rod & Main Bearings
main girdle
ARP everything

Canfield Aluminum heads
192cc
2.02 1.60 valves
Unshrouded valves, blended bowls and light port job
54cc combustion chamber
Flowed 270cfm before port work

Either
Comp cams XE284H-10
or
The good ol' Z303 cam

Edelbrock performer RPM II intake manifold
75mm throttle body

All these parts along with a custom tune in my 2800 pound car should be fun.

[1989GT]

All these parts along with a custom tune in my 2800 pound car should be fun.

Yeah I'd say. Have you thought about getting a custom cam?

[Dark_5.0]

Originally Posted by 1989GT

Yeah I'd say. Have you thought about getting a custom cam?

I had a custom cam in my 302 and I didnt think it was worth the cash.

I invested in some engine simulation programs and that how i came up with my cam choices.

[USMC302]

I'm gonna go out on a limb here and say that IMO, 42's are a bit over kill if your staying N/A 331. You usually don't want to run injectors below 20% and above 85% duty cycle. I run the 30lb's and my PMS reports that I barely hit 65% at times in WOT.

I typed in your 460hp N/A car with 42lb injectors on the websites fuel analyzer and this is what is came back with. I understand this is based on a stock compression 302, but it's still going to be the general idea. Hope this helps.

Total fuel consumption under wide open throttle: 230 lbs/hr
Minimum fuel pump volume required: 138 L/hr
Optimum fuel pump volume required: 165 L/hr
Injector size needed at stock pressure (40 psi): 33 lb/hr
Pressure required on current injectors to simulate needed size: 24 PSI
Your current injector status is: OVER INJECTED

[Dark_5.0]

Originally Posted by USMC302

I'm gonna go out on a limb here and say that IMO, 42's are a bit over kill if your staying N/A 331. You usually don't want to run injectors below 20% and above 85% duty cycle. I run the 30lb's and my PMS reports that I barely hit 65% at times in WOT.

I typed in your 460hp N/A car with 42lb injectors on the websites fuel analyzer and this is what is came back with. I understand this is based on a stock compression 302, but it's still going to be the general idea. Hope this helps.

Total fuel consumption under wide open throttle: 230 lbs/hr
Minimum fuel pump volume required: 138 L/hr
Optimum fuel pump volume required: 165 L/hr
Injector size needed at stock pressure (40 psi): 33 lb/hr
Pressure required on current injectors to simulate needed size: 24 PSI
Your current injector status is: OVER INJECTED

Yeah I thought the same thing.

BUT......

My tuner told me to buy these parts so I did. He assures me that tuning it will be easy money and I will have room to grow.

I overkilled everything on the new build and only bought the best parts.

After this I hope to actually spend money on stuff like rims and paint.

[Jeff Chambers]

Originally Posted by USMC302

Your current injector status is: OVER INJECTED

There's virtually no such thing as over injected. The pulsewidth is only going to be what is required to deliver the amount of fuel necessary to match the amount of incoming air. That's how we can put 60# injectors in a blown 4.6l and still have it idle and drive like a dream.

I'm a fan of having more than enough when it comes to fuel. I've had 331 customers with 30# and 36# injectors run out of fuel. I'd rather encourage them to buy a 90mm LMAF and 42# right out of the box than have to tell them that they spent money on 36# and it still wasn't enough. Look at it this way, the 03-04 Cobra was rated at less HP than Coupe is shooting for here and it came stock from the factory with 39#.

Also, you NEVER want to run an injector at LESS pressure than it was designed to flow at. The spray pattern can be drastically affected. I tell most of my customers to forget about adjustable fuel pressure regulators. If we've got it tuned properly they should never have to touch the fuel pressure or timing.

[USMC302]

Originally Posted by Dark_5.0

I overkilled everything on the new build and only bought the best parts.

Awesome, good luck!

Jeff, thanks.....stupid mustangworks fuel analyzer...

[Jeff Chambers]

The fuel analyzer is correct, for the most part. What it may not be figuring is safety factors, fuel pump voltage, etc. Its in the ballpark, but there's a ton more variables that make every car and every combination a little different.

[USMC302]

Originally Posted by Jeff Chambers

but there's a ton more variables that make every car and every combination a little different.

You mean, all are not created equal??