69 442 convertible exhaust questions

Old January 12th, 2019, 04:15 PM
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69 442 convertible exhaust questions

Is the vert exhaust the same as the hardtop?

Also, I don't have headers, is there a nice sounding exhaust system that anyone can recommend? I heard a lot of people like flowmaster, but the ones that come up say header not manifold. Its a stock 455 motor.

eventually I will have the motor rebuilt with a bit more cam to get that nice lope that I have loved since I was about 8. Just in case that changes the recommendation.

oh and 1 more, the current exhaust is 2". Can I run it for a summer if I want, or will it damage my engine?

Bob

Last edited by Rvsmith5; January 12th, 2019 at 04:33 PM.
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Old January 13th, 2019, 06:50 AM
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Originally Posted by Rvsmith5
Is the vert exhaust the same as the hardtop?
Yes.

Also, I don't have headers, is there a nice sounding exhaust system that anyone can recommend? I heard a lot of people like flowmaster, but the ones that come up say header not manifold. Its a stock 455 motor.
I think you'll find far more people who hate (no)Flowmasters due to the obnoxious drone and the fact that despite being loud and obnoxious, they regularly place among the most restrictive mufflers in testing. Exhaust sound quality is extremely subjective. Personally I really like Walker Dynomax turbos. I usually use the 14" versions on musclecars. I put the 21" versions on my D88. Nice musclecar sound without the drone. My experience includes both manifolds and headers. I usually use a 2.5" system with a BBO.

oh and 1 more, the current exhaust is 2". Can I run it for a summer if I want, or will it damage my engine?
You aren't going to damage the engine.

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Old January 13th, 2019, 05:07 PM
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Originally Posted by joe_padavano
You aren't going to damage the engine.
Thank's Joe, i did not think it would, but was not sure and figured better safe than sorry.
Bob
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Old April 29th, 2019, 05:35 PM
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Rvsmith5, Did you ever decide on an exhaust system?
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Old May 1st, 2019, 11:46 AM
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Originally Posted by Spoffie1962
Rvsmith5, Did you ever decide on an exhaust system?
I am running the exhaust that is on it for now. I will probably wait on exhaust until after rebuild in a year or two.

Bob
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Old May 1st, 2019, 02:29 PM
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Bob,
Food for thought when you finally purchase an exhaust- Pypes is the only supplier that offers kits specifically for the through-the-bumper '68-'72 442 and '70-'71 GTO. The tailpipes are designed to fit those applications. An A-Body kit from Flowmaster or MagnaFlow will fit, but the tailpipes will probably need to be tweaked to a degree in order to exit exactly right.
http://classicmusclecarexhaust.com/c...s/a-body/pypes
Check out this website to get an idea of what's available and what the different systems sound like.

Last edited by Spoffie1962; May 1st, 2019 at 02:33 PM.
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Old September 15th, 2019, 10:28 AM
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Does anyone know if these will bolt on with no issues?
i have disc in the front and drum on the rear

https://rover.ebay.com/rover/0/0/0?m...2F333310372732
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Old September 15th, 2019, 01:24 PM
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Dude, you are asking about wheels in a thread about exhaust for a 69 442. I suggest you start a new thread in the Wheels and Tires section, and be sure to state what vehicle you are working on so that people have enough information to answer your questions.
https://classicoldsmobile.com/forums/wheels-tires-74/
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Old September 15th, 2019, 01:35 PM
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Sorry I meant to post this in my other thread! Not intentional
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