351w back four cylinders cooked

stven byrd · 01-13-2008

1993 351w the back four cylinders are cooked the front four are still good the head gasget on bolth sides were bernt were bolth rear cylinders meet. I have a comp cam in it headers no emishends hoked up and a super chip the engine was recently rebuilt 20.000km ago and a stumped all the local shops was woundering if any boy has herd of this happing

**EagleAutosports** · 01-13-2008

Yup, this happens all the time. Not often it happens to both sides at the same time but it does. As long as the heads and block weren't damaged, it should be ok. Be a good idea to have both heads and the block's deck surface milled to make sure they're flat so the head gaskets seal properly.

stven byrd · 01-14-2008

thak you for awnsering my question. what would the couse of this

Tominator · 01-15-2008

Your motor was running lean I'd bet.

Get the car tuned using a wideband O2, not just HP readings.

Spring for Cometic head gaskets and ARP head bolts if you son't have them already.