Originally Posted by kyle_rivas
Intake but I had them re surfaced and new springs and re did the value seats so idk then the heads are like brand new now
If you did all that you would have had a TON of extra benefit from doing it to a set of $200 GT40 cores. E7 heads are terrible but even they can flow ok if you cram enough air through them. The more pressing issue really is the rest of the car. You can crank around 400whp through a stock 5.0 motor with all the "bolt ons" done but without the right driveline to get the power to the ground its not going to do anything but spin off the line and be decent from roll races.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.