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394 Left Side Dual Exhaust Manifold

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Old Dec 18, 2018 | 05:48 AM
  #1  
KQQLCAT's Avatar
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From: Hudson, WI
394 Left Side Dual Exhaust Manifold

I would like to find the heat riser for this manifold so the exhaust pipe fits better. Do any other makes work?
Thanks
Old Dec 18, 2018 | 05:55 AM
  #2  
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Have you eliminated the heat riser from your exhaust manifold? Have you taken your Olds to an exhaust shop to see if they can fabricate a new exhaust crossover?
Old Dec 18, 2018 | 11:31 AM
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Heat risers are able to be found. Look on ebay for starters, and Fusick.

Unless one does a whole lot of cold weather driving, it really is not needed. Better off to try and locate a heat riser eliminator or simply remove the internal butterfly valve in the current one.

Last edited by D. Yaros; Dec 20, 2018 at 01:48 PM.
Old Dec 20, 2018 | 07:30 AM
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What I have now is the left dual exhaust manifold from a 64 Starfire but don't have the heat riser that has the built in donut. If and when I find one I plan on gutting it and plugging holes.
Old Dec 20, 2018 | 01:51 PM
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Originally Posted by KQQLCAT
What I have now is the left dual exhaust manifold from a 64 Starfire but don't have the heat riser that has the built in donut. If and when I find one I plan on gutting it and plugging holes.
I presume by left you mean driver side? That is where the heat riser is located on my 1962.

It would seem that someone has made a replacement spacer for this application? At least they should have! I know that spacers are/were available for some mid-fifties Cadillacs.
Old Dec 20, 2018 | 04:00 PM
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Hi KQQLKAT,
I sent a PM about the heat riser.
Steve
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