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Home » Public Forums » GMCnet » replacing driver's side head on a 455 (Jumping into unknown waters and any help appreciated)
Re: replacing driver's side head on a 455 [message #362743 is a reply to message #362734] Tue, 09 March 2021 10:02 Go to previous messageGo to previous message
rgogan is currently offline  rgogan   United States
Messages: 82
Registered: February 2004
Location: Milwaukee, WI
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I have replaced so many cracked exhaust manifolds that I don't even remember the count. Finally switched to headers and increased the carburetor jet sizes by 2. I'll never go back to manifolds with the shock cooling and cracking they were susceptible to with a lean carb.

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