MrMercury

just a quick question ,what sort of gains do u get from porting your head as in torque/horsepower ?
also while heads are off do u reckon its worth shaving them to increase compression ?
catch ya jake

jonbays

Au compression is high enough any more and it will be PULP only and the ecu knock sensor will go into overdrive and retard the ign all the time.

The AU head can be improved to flow around 20% inlet and exhaust which will bring good gains.

As a guide a good cammed modded ecu falcon six can go from 150 to 175 rwkw peak with a well modified head.

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AUII Auto wagon 4.0L InTech Pacemaker PH4480 extractors, 2.5" exhaust, JMM DEV3HL Cam Unichip 144rwkw. 1/4 mile 15.609sec@90.14mph

MrMercury

thanks jonbays