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Old 08-06-2018, 12:06 AM   #9
FL71C10
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Join Date: Jun 2010
Location: Orlando, Florida
Posts: 2,508
Re: No adjusting slot on drum backing plate

I just bought new drums for my 71 and they dont have knockouts. I'd be interested to see how you cut the holes in the backing plates. Drill holes on each side and then file out the middle?
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71 Chevy C10 Shortbed Stepside. LT1 with
4l60E. Just got back from painter, in assembly now.
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