#1  
Old 09-24-2019, 02:22 PM
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TransAm 474 TransAm 474 is offline
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Default 1970 Trans Am RA III manifolds

Hi, can someone guide me to the best replacement RA III exhaust manifolds for my 1970 Trans Am? My factory manifolds are casting numbers 478140 Left and 9799720 Right. One has a 2-bolt flange and the other jas a 3-bolt flange. I was looking to buy a pair from RARE, but all they seem to show for 2nd gen F-Body, say they require two 3-bolt flanges. I want a set that is direct fit, so I dont have to alter the exhaust flanges. I see The Parts Place shows a pair that has one 2-bolt and one 3-bolt, but everyone says RARE are the best manifolds. I also assume that all reproduction manifolds will have the wrong casting numbers on them for my firebird, as I have never seen reproductions that have my casting numbers. Can someone help?

Thanks

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1978 Trans Am
Pump Gas 461 Stroker
  #2  
Old 09-26-2019, 08:17 PM
Skip Fix's Avatar
Skip Fix Skip Fix is offline
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Call RARE and talk to Paul I would bet he has them unless they have had supplier issues.

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1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
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  #3  
Old 09-26-2019, 10:49 PM
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TransAm 474 TransAm 474 is offline
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Thanks Skip, I sent Paul an Email. I appreciate the help

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1978 Trans Am
Pump Gas 461 Stroker
  #4  
Old 10-03-2019, 09:43 AM
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TransAm 474 TransAm 474 is offline
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Well.... Just an update, I gave Paul at RARE a call, and he doesnt make a drop in pair of manifolds that use a 2-bolt flange on the driver side and 3-bolt flange on the passenger side, both of his require a 3-bolt flange. We didnt want to alter the exhaust flanges, so we ended up ordering a new pair from Classic Industries last night. They are the correct 2-bolt/3-bolt arrangement, and says they are Made in the USA. They may not be quite as nice as the RARE manifolds, but they will work fine for what we are doing, and atleast they are not the Imported manifolds. I got the for 20% off as well with a promo code. Anyone have any experience with the USA Made manifolds that Classic Industreis sell?

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1978 Trans Am
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