Got both heads assembled. I ditched the valve seals ,and used orings instead. Also put a .080 thousands shim under each stock spring,intake is around 125 lbs seat ,and exhaust is around 115 lbs . Stock pressure was a little less than 80 lbs. A picture of the 4 door Tahoe . I also got a c clip 14 bolt 6 lug rear for it .
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