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Old 03-23-2000, 03:59 AM
FarmBoy FarmBoy is offline
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Join Date: Mar 2000
Location: Saskatoon Saskatchewan Canada
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Question

I have a 1977 440 police motor forged crank.
3000 miles on it. It has a bad vibration in it at 1500 and 3000 rpm. Runs good ran 13.7
In the quarter. Its in a 67 charger 4000 lbs
I'm wondering if anyone else has had this problem and what it might be. The harmonic balancer is the right one and the converter is properly wieghted.
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Old 03-23-2000, 04:38 AM
Thunderstruck Thunderstruck is offline
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Location: San Angelo, TX, USA
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77 440's did not come with a forged crank from the factory, police or not. If you added a forged crank to the 77 440 then you do not need a balance weight on the torque converter and you need a forged crank balancer. If your running the 77 harmonic balancer with a forged crank you did a bad thing. Did you balance the assembly when you rebuilt it?

Steve

------------------
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"No quarter asked, none given" - Thunderstruck Racing
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Old 03-23-2000, 04:54 AM
FarmBoy FarmBoy is offline
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This is definatly a police ordered engine( Medicine Hat Alberta Detachment RCMP) The engine was Damaged in shippment and sat in the back of the garage for years now I have it and it worked in one car fine (forged balancer no weight convertor) . Now once swapped in an identical car, this little gremlin appeared
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