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Old 02-04-2004, 08:07 PM
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pete jackson gear drive

i was wanting to know if a Pete Jackson style gear drive hurt performance? i've heard they kill a little horse power. i don't know if they do or not, so thats why i'm here. i'm wanting to run one in my 406 Chevy. i've also heard they make metal shaving's that destroys the engine bearings. help me please to know whats fact & whats bulls**t thanks

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Old 02-04-2004, 08:43 PM
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I don`t think they cost any horsepower, the pro`s are dead accurate timing, there bad points are noisy, and yes they can give off metal shavings if there not set up correctly, they also pass all harmonic vibrations from the crank to the valvetrain.
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Old 02-04-2004, 11:27 PM
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I use to run them in my boat which has twin 1000 sc's, to make a long story short its like Double Vision said, I had more valve
train problems than you can belive. I went back to chains and
eliminated the problem complety.
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Old 02-05-2004, 01:14 AM
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Yeah, they can hurt your e.t.s slightly. They run tight and true tho'. I know a couple of guys that ran them and lost upwards of a half a second. I use to know the fancy scmancy terms of how and why this happens, but I have lost that info somewhere in the grey matter.
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