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Old 07-18-2021, 04:08 PM
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pontiac rodder pontiac rodder is offline
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Default Ram Air Manifolds and IAII block

Would like to know if anyone has had any issues using Ram Air exhaust manifolds with aluminum head on a IAII block? Mine seam to touch the block and wondering if it might cause some of my overheating.

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Old 07-18-2021, 04:42 PM
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I have a friend who planned to run those on an aluminum block, but if I remember correctly, there was interference with the freeze plugs. He ground them down, but still ended up going with headers.

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Old 07-18-2021, 04:51 PM
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Quote:
Originally Posted by Gator67 View Post
I have a friend who planned to run those on an aluminum block, but if I remember correctly, there was interference with the freeze plugs. He ground them down, but still ended up going with headers.
Yes I had to use different freeze plugs and still had to do some grinding

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Old 07-19-2021, 06:20 PM
JSuchma JSuchma is offline
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Quote:
Originally Posted by pontiac rodder View Post
Would like to know if anyone has had any issues using Ram Air exhaust manifolds with aluminum head on a IAII block? Mine seam to touch the block and wondering if it might cause some of my overheating.
Same issue here with the super long branch round port manifolds. I ended up using a pair of round port header flanges as spacers. Got them new off Ebay years ago.

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Old 07-22-2021, 09:18 AM
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I had to dent my headers for the freeze plug on my IA iron block driver's side.

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