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Old 07-10-2017, 07:04 PM
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Default Gear drives

I always thought that noisy gear drives whine. That s10 i got the other day has the noisy ones. They don't whine that i can hear, they sound like the engine is falling apart. I was just idling through a parking lot and almost sounded like a choo choo train going down the tracks. Is this what they're supposed to sound like? If so, i don't like it.
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Old 07-10-2017, 07:34 PM
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I've heard some really nasty sounding ones... not a fan!

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Old 07-10-2017, 08:51 PM
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Engines are meant to be quiet, exhausts are meant to be loud.
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Old 07-10-2017, 09:54 PM
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I've never been a fan of any gear drives
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Old 07-11-2017, 07:51 AM
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Easy enough to change out on a SBC. Double row chain would be much quieter.
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Old 07-11-2017, 11:50 AM
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If your noisy gear train is steel gears, then you can't easily change to a timing chain. Your camshaft will turn one way with the gearset and the opposite way with a chain. Also your distributor and oil pump won't be happy.
I've seen fibre cam gears on Fords so maybe Chevys have fibre gears too.
Food for thought.
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Old 07-11-2017, 02:25 PM
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Mac, unless he has a reverse ground cam and two gears meshing, which I kinda doubt, he can easily change it back to a chain. Almost all the gear drives I've ever seen have one or two idler gears to keep the cam and crank rotating the same way. You're probably thinking about on a inline six, some of them do use two gears meshed without the idler gear. Not many reverse rotation cams around for a small block Chevy, maybe a marine cam or something special made.
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Old 07-11-2017, 11:22 PM
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I ordered a cloyes double roller timing chain today. I can't stand that noise. I was going through all the receipts he gave me with the car and found out he put a crane roller cam and lifters in it. I've always heard that you should never run a roller cam with gear drives, they will break. I personally don't know what the difference in cam style would have to do with anything but I'm sure someone has learnt from experience.
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Old 07-11-2017, 11:56 PM
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You're quite right Bam, on two counts. First, if you have idlers in between the two gears then they will both turn the same way. Second, I know nothing about small block Chevys, [and I'd like to keep it that way], but I have tinkered a little with big block Chevys out of big trucks,[427's]. some of them had two gears, and no idlers.
Anyhow, I should not be so willing to express my opinions, [especially about SBC motors].
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Old 07-12-2017, 08:14 AM
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No problem Mac. We all share knowledge around here, that's what makes RRR, errr, UDS so great!
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