Yes I have but didnt get a real good tune on it . I made it to 13psi a tad sooner , but still the belt slipped in the 13 to 13.9 range . I made 421whp [best ] and I think 338trq. Remember Im on a Mustang Dyno , so Dynojet numbers will be 12% higher [ 470whp & 375trq. ] . I have head lift or gasket failer and I have to take care of that now . It never ends...lol

 

Did you have SGP put in ARP head bolts or did you just leave all of that alone. We both had our engines built at the same place so your concerns are my future problems as well. What symptoms are you having to make you believe you are experience head lift or gasket failure?

 

Used ARP studs and OEM head gaskets . Trq. to stock spec's . Every time I boost it to redline , i get about a 1/2 inch of water in the overflow . But the car doesnt run hot . If you havent seen it at 15psi , dont think you will

 

Damn that't ruff. Did or are you going to contact SGP's engine building group? From what I understand this should not be happening especially with the ARP head studs

 

Wasnt SGP's fault . They built the short block , My shop put on the heads . With the new ARP L 19 bolts trq. to 90lb's and a Cometic gasket , it should hold this time

 

did you have to pull the engine to put on the new head studs and gasket?

 

Havent done it yet . Car runs fine and only does it whaen boosting . Im waiting on parts . Motor doesnt need to be pulled , but they may if they think its easier