Dj_Seph

Injectors can be rebuilt.

And as for 24lbs injectors on GT40p heads, I have them and my car runs great.

pete88gt

what is your fuel pressure set at? do you have an adjustable fpr? i've heard that with gt40s or even p's that you will need to dial down your fuel pressure if you run 24lbers...

Dj_Seph

My fuel pressure regulator is the stocker. Still runs fine.

89GTnoob

Stock FPR, 255 pump.

john89gt

I remember MMFF did an article on heads. It was 336 HP out a set of GT40 heads. I'm not going to say the P's, because I don't remember. That was the numbers though, and the AFR165 was 400HP. This was all on a stock motor with a cam about the same as the E-303. The 336 HP was good number MMFF said for the money. Hope that will help you.

89GTnoob

I'm not building a track car so I modest amount of HP for cheap is a deal for me. Is that crank HP? I have yet to hear that much of a RWHP gain on a stockish motor, or even a motor with mods as mine. I want a slight bit more power, and want to get the experience to do something fun like this. Plus I'm pulling my motor this winter to fix some terrible mystery leak.

john89gt

That was flywheel HP. Still not bad for the money. It will take a lot to get to 300 at the wheels.