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Old 08-08-2020, 11:12 AM   #9
tdangle
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Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,209
Re: Vortec Coolant Bypass

I believe it's the vortec heads that don't have the bypass not the block. Could be wrong.
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Terry

1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC
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