Author Topic: 79 ta exhaust manifolds for 403 olds  (Read 3587 times)

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Offline 79 trans am ta

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79 ta exhaust manifolds for 403 olds
« on: October 23, 2019, 11:31:42 PM »
does anyone make a set of manifolds so i can have dual exhaust or are there any shorty headers that will fit

thank you

Offline tz6p06

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Re: 79 ta exhaust manifolds for 403 olds
« Reply #1 on: October 24, 2019, 07:51:23 AM »
I put these on my car to give it a true dual exhaust and they worked great.

http://thorntonmusclecars.com/product/thorntons-350-jr-exhaust-manifolds

Offline Wallington

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Re: 79 ta exhaust manifolds for 403 olds
« Reply #2 on: October 24, 2019, 03:44:27 PM »
You can simply cap off one side of the crossover to use existing manifolds for duals. Naturally a purpose made manifold set with new exhaust system would be better.
« Last Edit: November 06, 2019, 07:44:14 PM by Aus78Formula »

Offline 79 trans am ta

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Re: 79 ta exhaust manifolds for 403 olds
« Reply #3 on: October 24, 2019, 09:52:06 PM »
those thurstons look nice, my stock manifolds are long gone i have headers on now that i am sick of and they need to be replaced. i may get the thurstons 
thank you

Offline 79 trans am ta

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Re: 79 ta exhaust manifolds for 403 olds
« Reply #4 on: October 25, 2019, 12:15:57 AM »
I put these on my car to give it a true dual exhaust and they worked great.

http://thorntonmusclecars.com/product/thorntons-350-jr-exhaust-manifolds

 do you install your own exhaust if so do you have the lenths of the down pipe from the thorton  manifolds

Offline tz6p06

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Re: 79 ta exhaust manifolds for 403 olds
« Reply #5 on: October 25, 2019, 06:11:56 AM »
I put these on my car to give it a true dual exhaust and they worked great.

http://thorntonmusclecars.com/product/thorntons-350-jr-exhaust-manifolds

 do you install your own exhaust if so do you have the lenths of the down pipe from the thorton  manifolds

I used these down pipes and they just needed to be cut for the length of them.  These down pipes were actually the recommendation of the owner of Thornton.  I spoke to him on the phone and he said to use these and they worked great.

https://www.jegs.com/i/Pypes-Performance-Exhaust/958/DOF10S/10002/-1

Offline 79 trans am ta

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Re: 79 ta exhaust manifolds for 403 olds
« Reply #6 on: October 25, 2019, 08:18:38 PM »
I put these on my car to give it a true dual exhaust and they worked great.

http://thorntonmusclecars.com/product/thorntons-350-jr-exhaust-manifolds

 do you install your own exhaust if so do you have the lenths of the down pipe from the thorton  manifolds

I used these down pipes and they just needed to be cut for the length of them.  These down pipes were actually the recommendation of the owner of Thornton.  I spoke to him on the phone and he said to use these and they worked great.

https://www.jegs.com/i/Pypes-Performance-Exhaust/958/DOF10S/10002/-1

thank you for the info what mufflers you have and how do they sound

Offline tz6p06

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Re: 79 ta exhaust manifolds for 403 olds
« Reply #7 on: October 26, 2019, 07:43:12 PM »
I put these on my car to give it a true dual exhaust and they worked great.

http://thorntonmusclecars.com/product/thorntons-350-jr-exhaust-manifolds

 do you install your own exhaust if so do you have the lenths of the down pipe from the thorton  manifolds

I used these down pipes and they just needed to be cut for the length of them.  These down pipes were actually the recommendation of the owner of Thornton.  I spoke to him on the phone and he said to use these and they worked great.

https://www.jegs.com/i/Pypes-Performance-Exhaust/958/DOF10S/10002/-1

thank you for the info what mufflers you have and how do they sound

This is the kit that I got, they sound good just not loud enough.  If I had to do it over, I'd get the street pro mufflers.

https://www.jegs.com/i/Pypes-Performance-Exhaust/958/SGF70/10002/-1?ymm=4294829822+4294829274+4294829273

Offline Wallington

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Re: 79 ta exhaust manifolds for 403 olds
« Reply #8 on: November 06, 2019, 07:47:02 PM »
That would completely jump a muffler or two, end up too loud like on mine.