94IVGT

94 gt with a vortech sc, b303 cam 42lb injectors, pmas maf, all the other goodies, rebuilt motor. arp head studs, lock wire head gaskets fel pro 1011-1.

why am i blowing headgaskets? the car hasnt went past 3500rpm. i got 100miles the first time. then took it apart had the heads resurfaced(as little as possible) and the block was strees tested and checked for flatness which is perfect. put back together and 50 miles later the same thing happened. fuel pressure is good, oil pressure is good everything checks out. i do not know what to do. im giving it one more chance before i kick it to the curb. please help.

jthorn9

What compression are you running, and have you had it tuned since you had the supercharger and cam put in?

mattdel

putting the gaskets on upside down?

samseed101

What's your A/F ratio?

94IVGT

the compressionn is 9.0:1. the headgaskets are on correctly, and i dont have an a/f gauge.

94IVGT

it has not been tuned either. not being tuned wouldnt cause it to blow headgaskets.

samseed101

Why not? If you haven't had it tuned and if you don't have an A/F gauge or wideband sensors then how do you know you aren't running lean at any point? Running lean is a sure fire way to kill a head gasket. Not getting it properly tuned is an easy way to run lean.

ahittz24

Running lean causes hot spots on the ring of the head gasket, this will in turn blow headgasket. have the block o ringed and use copper gaskets

jthorn9

Well, now we know what your problem is. Call a few local shops to see if they have a dyno, and if they can tune Mustangs, then go in and get that baby tuned, because odds are you're running fairly lean.

94IVGT

anyone know of any GOOD dyno shops near north-central illinois?