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manifold question

Old December 11th, 2017, 03:16 PM
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manifold question

72 cutlass supreme, 350 automatic, A/C My driver's side manifold is cracked and need to replace it. Can someone recommend headers that would perfectly fit without any alterations?
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Old December 11th, 2017, 04:18 PM
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I don't think those headers exist, as in the best fitting ones still need a slight amount of work for adequate clearance. I have Heddmans on my car and while they fit very well, I had to slightly flatten one tube on the drivers side so the inboard corner of the lower control arm wouldn't contact it at full suspension travel.
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Old December 11th, 2017, 11:14 PM
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Thornton makes a new cast iron header that flows more than stock 350 exhaust manifolds. try them.
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Old December 12th, 2017, 06:39 AM
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Either the Hedman or Sanderson shorty headers need 0 mods to fit, other than modifying the down pipes to fit on the collector with the stock starter. Use aluminum or copper collector gaskets.
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Old December 12th, 2017, 06:59 AM
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As Olds307and403 mentioned:

If you go with the short header such as hedman. The photo below is from my 76 cutlass supreme with 350/350.
With hedman shorties, this type of custom mandrel pipe is likely what you will need to do coming off the driver side header.
I used Remflex graphite header gaskets.

exhaust off header collector.jpg
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