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This is pretty interesting so i thought i would share. I went to the dyno to get another tune today with my new setup consisting of a fresh p&p and a new edlebrock header (from ractive header). The last time i was their i made 133.1 hp and 102.5lbs of tq, this time i only made 125.6hp and 107.7lbs of tq. So i lost 8 peak hp and gained 5lbs of tq. for the $800 i spent on the head i was a little disapointed. It almost seemed like it was a diffrent motor under the hood, we had the cam gear @ 2* advanced and we had to bring it back to 2* retard, the power curves were diffrent and the fuel was way off. Im not sure what to really think about it except that i think the head was over ported. It was done by KMS engine development so watch yourself their. But i did pull down 190hp with the gas, last time i made 174 BUT i had a leaking head gasket, so we dont know if i gained power on the nitrous. It is what it is i guess. i sucks but thats car building i guess