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Old 12-04-2021, 11:00 PM   #1
rally
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Default 1971 Stock Chevy SB Heads 39734487X Rebuilt

I have a pair of used completely rebuilt 39734487X heads for sale. Intake Valve size 1.94- exhaust 1.50 Valve Size. 76 cc chambers. Heads were magged for cracks, new valve guides, seals, seats ground, checked for flatness, factory springs were reused along with exhaust rotators. These heads have cast dates L-22-1 meaning- Dec-22-1971. Hardened seats for use of unleaded fuel. No porting done, factory untouched heads. Heads were rebuilt by a reputable machine shop located in Mich. 300.00 dollars plus shipping buys them.
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