#1  
Old 06-09-2021, 10:22 PM
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vertigto vertigto is offline
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Default Heat Shield on RA Manifold?

On my 1970 GTO driver's side log manifold, there was a heat shield with riser tube to the air cleaner (see pic).

I purchased RARE oversized manifolds to replace the stock logs. Do ram air manifolds use a shield? If so, does someone make one that fits or will the stock one work? Also...how necessary?

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1970 GTO (Granada Gold) - 400 / TH400

Last edited by vertigto; 06-09-2021 at 10:27 PM.
  #2  
Old 06-09-2021, 10:27 PM
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vertigto vertigto is offline
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I think I found my answer...from OPGI. Of course, backordered until August.

Heat Shroud, 1968-70 GTO Ram Air, D-Port



*Edit...looks like Ames has it too.

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1970 GTO (Granada Gold) - 400 / TH400

Last edited by vertigto; 06-09-2021 at 10:32 PM.
  #3  
Old 06-09-2021, 10:51 PM
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Barry makes those for everyone. Call him.

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Old 06-10-2021, 07:47 AM
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vertigto vertigto is offline
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Apologies...Barry who?

I guess the main question is the necessity of using this on the new motor with the new RARE manifolds. Obviously wouldn't be used if I had went the header route. Would also mean backing out the 2 ARP bolts already installed for mounting (and if anytime I wanted/needed to get at the manifolds).

How many of the guys using the RARE manifolds opted to buy/install these? I am assuming the only purpose is to preheat air and route to the air cleaner for emissions purposes? No perceived performance or functionality gain?

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1970 GTO (Granada Gold) - 400 / TH400
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Old 06-10-2021, 08:59 AM
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Big Bear Big Bear is offline
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www.ebay.com › str › sonicmotors2010

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Old 06-10-2021, 01:32 PM
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Scott Thelander Scott Thelander is offline
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"" Heat Shroud, 1968-70 GTO Ram Air, D-Port""
another misled quote by the repoppers

68 HO yes,, 68 ram air no ....
and they fit OVER the head bolt on the threaded stud and held on with a locking castle nut

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Old 06-10-2021, 01:56 PM
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This would be on a '70 with the oversized RARE (2.5") reproductions.

Any issue with fitment on those?

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Old 06-10-2021, 05:10 PM
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unruhjonny unruhjonny is offline
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those manifolds are only oversized in the ID;
IIRC they have a bit more meat at the pipe connector too - otherwise they are dimensionally identical to originals.

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1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
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Old 06-10-2021, 07:54 PM
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Sorry link didnt work . Barry's business is Sonic Motors. Check his e-bay store there is one listed or google and call him.

  #10  
Old 06-11-2021, 02:17 PM
promptcritical promptcritical is offline
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I have them on my 72 HO motor with RARE manifolds. They fit the manifolds fine. I don't let the hot air get to my air cleaner though. I put them on because I want to motor to look stock on the outside.

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Old 06-11-2021, 07:09 PM
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Pick one up at the natz in Ohio in august. Barry’s usually there.

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