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Re: 307 engine
Quote:
Originally Posted by Warrens69GMC
What heads did you put on it. All 307's i have seen have had 1.72 heads...
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I think you're talking car 307's and this engine came out of my '73 pickup. It had the larger valve heads. My '89 GMT400 originally came with a 305 and that engine had HO heads with 1.84 intake valves.
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1989 K1500 Chev. EC
Original owner; some of the aftermarket parts I've installed are Borla headers, Hypertech chip, Edelbrock water pump, and a Stillen rear disc brake conversion kit.
2009 Hummer H3T 3.7L 5M (sold)
1997 K2500 Chev. EC 7.4L/ 4L80E (sold)
2018 Dodge Ram 2500 HD R/C
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