[toothpick975]

I have a 2002 3.8 mustang with the heads milled 2", bored 30 over, 120 lb valve springs and a cam that turns 6,200rpm with a lift of .50. I have delta force commando tuning. I am still running the stock injectors and I was wondering about the fuel with that because I have duel exhaust with headers running back to 2 flow master 50 series then I have cold air with a 65mm throttle body. What size injector should I use on this? I would guess from what others have done that it is around 240-250hp right now (people had 250 with upper intake where I have bigger pistons and a slightly higher compression ratio). I have an m112 supercharger that I will be putting on later (I know that uses 39lb injectors) but right now what is my best option? The last part I put on before the cam install and engine rebuild was the throttle body and it had no effect at all... the stock cam I guess was holding it back... but I'm not sure. It seems like it might be hungry for some fuel at the top end now... but that's just the impression I'm getting. And if I upgrade then what about the fuel pump and regulator? Well any thoughts are appreciated. Thanks.

 

[davidcseifert]

I'm having my top end done here soon and I was told i should get 24# injectors for it, so that should be about what you need, the factory is 21, so it's possible it may be a little overworked with what you have done