Mopar 360 Performance Shortblock
I'm a little late responding since I'm new, so I hope this helps. At the present I have part# P4876908 short block in my 67 Dart. Bracket race vehicle only. I took the 509 cam out and installed a Mopar Performance 557/296 cam and degreed it. I also checked the torque on all the rod and main bolts, They were right on. I installed a Milodon pump, windage tray, and pan. I'm using small chamber W2 heads and a W2 M1 intake. The car runs 11.3's at 116mph and at the present has almost 100 passes on it. I shift at 6k and run through the traps at 6500. So... I'm happy with it and no problems to this point. (knock on wood).