Thread: NOS GM BBC Valve P/Ns
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Old 12-27-2020, 02:01 PM
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Default NOS GM BBC Valve P/Ns
Hi folks,

I have a set of 2.19"/1.88" NOS GM valves with part numbers 340286 and 340287. Each box has the GM 'special parts notice' sticker on it and the valves themselves appear to be swirl polished. Can anyone verify these part numbers - are they OTC racing valves, or just standard issue rectangle-port valves?

Thanks!
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