jasonblinn
Active Member
hello. i recently installed a rebuilt '72 440 motor in my '69 charger. the motor is bored .030 over, steel crank, flat top pistons with valve relieves, stock 346 heads with 3 angle valve job, and a stock 440 mopar cam, (268/284 0.450/0.0458) engine is dynoed at 386 hp, and 480 ft/lbs of torque with stock manifolds and stock intake. i was told it had 9.5-1 compression. problem is when the motor had about 1500 miles on it, i over revved it for approximately 5 seconds doing a brake burn. i dont know how high it was revving as my tach doesnt work. the motor ticked for about 10 seconds, due to a dry lifter im assuming, then was spark knocking and lost a little power. got home and took it apart, found 2 bent push rods ( not that bad ) so i replaced them. seemed to be working better, but still didnt have the power it 1st had, and would spark knock every once in a while. then it started to get worst. brought it to a guy that knows more about mopars then me, he messed with the timing a bit, but no change. now the spark knocking is getting worst, and i dont know where to check next. would some1 know what could be going on inside that motor? could the cam be getting bad? we checked the compression, i have 190 lbs in all 8 cylinders. when the engine is warm, even with the coil wire unhooked the engine almost starts, is this normal? i'll have to take the engine out soon, just wondering if someone could help me out then i'd know what to look at 1st. thanks