New powerglide no low gear out of the blue (grinds) - Hot Rod Forum : Hotrodders Bulletin Board
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Old 11-23-2009, 05:21 PM
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New powerglide no low gear out of the blue (grinds)

So I just had a 1000hp rated glide installed in my measly 2800lb race car making right at 500hp.

Figure I'll never break this thing. Had the car out to the track once, ran great. Maybe driven 75 street miles on it. Today at a stop light I go to put the trans in low and it immediately makes a horrible grinding noise. Pop it back into 2nd and noise is gone. Drove home in second. Once I got it home I noticed it also grinds in reverse and neutral.

Anyone have an issue like this before?

Letting it cool off a bit before crawling under it to check things out.

Thanks all!

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Old 11-23-2009, 05:55 PM
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broken gears in the planetary is my first guess
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Old 11-23-2009, 06:06 PM
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Well thought I may of had the shifter linkage off but no luck there. My trans guy told me it sounded like the planetary gears as well.... Thats no fun! Hope my converter isn't hosed....

Anyone suggest a decent aftermarket set?

thanks!
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Old 11-23-2009, 08:58 PM
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Maybe you bent the band adjustment rod, caused the band to get too loose, and one of the band/servo struts fell off. I don't know for sure if that can even really happen. Or, you ate a planetary.
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Old 11-23-2009, 09:59 PM
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Well I'll pull it tomorrow and see what the hell happened. Thanks all, I'll post up some pics of the carnage....
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Old 11-27-2009, 09:00 PM
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Well we tore it down today. Planetary lost 2 teeth stinking teeth. They were still crammed in the gear housings. Installed new 1.76 match planetary set and got her all back together. No good carnage pics. Just two little broken teeth. Dropping by the trans shop monday to flush the converter and I'll drop her back in.

thanks all.
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