| [GMCnet] Manifolds vs Headers [message #355086] |
Sun, 24 May 2020 16:50  |
Mike Kelley
Messages: 467
Registered: February 2017
Karma:
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Senior Member |
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Hi fellow GMCers:
Mine is a 76 Eleganza II 455 w/ 3:21 final drive. I have cracked manifolds on my Dick Patterson rebuilt engine (about 80,000 miles in rebuild and 225,000 miles on coach).
Looking for advise as to which way to go. I have access to a set of used manifolds at $400.00. I also have access to a new set of Thorley headers at $250.00. I know I will need add’l exhaust work if I go w/ headers. I am told to plan on insulating them if I go w/ headers due to excess heat in engine bay but have no idea what this may cost. Have also been told ceramic coating may be advisable but am not sure if that would solve the heat problem. I am not a mechanic so will be paying for the installation portion also.
Ok - my GMC friends - advise as to the best way to go and why and approx $ cost.
Thanks,
Mike/The Corvair a holic
Sent from my iPhone
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