Stock Exhaust...how restrictive???
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
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From: Jackson MI
Stock Exhaust...how restrictive???
I should be getting my stroker motor back next week and I'm wondering if I've got the exhaust to back it up. I've got a set of Hooker longtube headers to go with it, but everything else after that is stock LT1 exhaust. Would it be worth the $/hp to get some new mufflers, or would I need a whole new catback at this point? After paying for the engine I've not got much left to get exhaust a $1000+ catback would be out of the question, but <500 I might be able to swing and just stick to Romen for the next couple of weeks. Thanks for the input.
[Modified by mn_vette, 5:26 PM 6/2/2003]
[Modified by mn_vette, 5:26 PM 6/2/2003]
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Re: Stock Exhaust...how restrictive??? (mn_vette)
I would just wait and save up the money if you have an expensive one in mind, the stock catback isnt that restrictive on LT1s. The exhaust manifolds are the really restrictive part. If you like Flowmaster, you could probably swing something for ~$500-600 though.
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Re: Stock Exhaust...how restrictive??? (vader86)
I've got nothing in mind......So it's not worth it to just replace the mufflers? Any suggested size(inner diameter tube) of a catback I should get?
Le Mans Master
Joined: Oct 1999
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From: Sachse Texas
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Re: Stock Exhaust...how restrictive??? (mn_vette)
I would not worry about it right now if I were you. I would be more focused on getting the motor back in there and tuned prior to spending the wad on the exhaust. You never know what little things you might encounter that are more important to spend the money on trying to get the car in order.
It is not going to hurt you much, if any at all.
It is not going to hurt you much, if any at all.
Team Owner
Joined: Dec 2000
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From: SE NY
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Re: Stock Exhaust...how restrictive??? (mn_vette)
Before you change it over you might tap into the exhaust pipe and measure the back pressure.
If it is aroun 1-2psi at WOT, leave it alone; if around 5-6psi or more you need to upgrade.
In the latter case go with at least 2 1/2" mandrel bent pipes.
If it is aroun 1-2psi at WOT, leave it alone; if around 5-6psi or more you need to upgrade.
In the latter case go with at least 2 1/2" mandrel bent pipes.
