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Old 07-10-2008, 08:00 AM   #1
72gord
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Join Date: Mar 2004
Location: sw Wisconsin
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400SB balance plate??

Anyone have any experience with one? Would like to put the 400 I have in a truck with a manual transmission, I have a flywheel and clutch assembly that are good...NAPA lists a balance plate made by Zoom for use with an unweighted flywheel (NAPA part #NNC 624001)....just wondering if anyone had used one before. Thanks in advance for any input...Gord
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Old 07-10-2008, 08:22 PM   #2
JimKshortstep4x4
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Re: 400SB balance plate??

I have not used one but I did look at them before buying the correct flywheel. I was concerned about the extra part which is not part of the flywheel. I bought a flywheel from Northern Auto parts which has the weight cast into it.

Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end
1965 Impala SS 400 sbc, Muncie rock crusher
1966 Impala SS 396 bbc, TH 400
1969 El Camino, 350 sbc, TH 350
1971 Snowplow built on a Blazer frame
1972 GMC Short bed, stepside, TH 400, 427 BBC
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Old 07-10-2008, 08:56 PM   #3
rlb67
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Re: 400SB balance plate??

I've used one. I had a 79 K-10 with a granny 4 speed, changed the 350SB to a 400SB and used the balance plate with my orignal flywheel and clutch. Worked like a charm for me. No vibrations and the engine lasted until I sold it, maybe 20k later.
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84 Feetside SWB L6 3 speed on column
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