exhaust manifold - Pontiac GTO Forum
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post #1 of 8 (permalink) Old 08-10-2013, 12:39 AM Thread Starter
 
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exhaust manifold

Going through parts I noticed my manifold on my 428 is off a ramair 3 400. Should I change this or is it ok
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post #2 of 8 (permalink) Old 08-10-2013, 09:39 AM
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Could you post a picture that shows most of the manifold? If it's really a RA III piece, it's a good one - hopefully you have them on both sides.

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post #3 of 8 (permalink) Old 08-10-2013, 12:01 PM Thread Starter
 
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You can see a little more in this picture. Ill try to swing by the shop on the way to work to get more.
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post #4 of 8 (permalink) Old 08-10-2013, 01:04 PM Thread Starter
 
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hope these are better
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post #5 of 8 (permalink) Old 08-10-2013, 02:39 PM
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Yep, them are the RA pieces. They're good for a stockish engine, prolly up to 450 HP.
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post #6 of 8 (permalink) Old 08-10-2013, 04:07 PM Thread Starter
 
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Ok thanks. I have no clue at this time what hp/torque is for the car. Hoping to have it finished and back on the road by the 20th. Guess ill dyno it as soon as I can. My 428 seems to be just a block at this point its a frankenstien
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post #7 of 8 (permalink) Old 08-10-2013, 06:46 PM
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You have some nice manifolds there. Definitely the ones to run for a street car.
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post #8 of 8 (permalink) Old 08-10-2013, 09:44 PM
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Those are definitely what you want for a mild to moderate street engine. They run "almost as good" as headers without any of the headaches.

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