I Have a 1983 Hurst with the original 307. I have a chip also. I'm looking for some better sound from the exhaust. Any suggestions
Stock motor
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While those answers are 'accurate' they're probably on the farther end of the list of solution options.
What type of 'sound' is "better" to you as it varies greatly from ones gearheads ear vs. another's? Some like a nice low rumble reminiscent of the older muscle-car Sonic-Turbo style sound while others like the louder/raspy (tinny/hollow?) Flow Master sound?
Is the current exhaust OE stock?
Still have a CAT converter?
Still manifolds y-piped into small diameter duals or into a single cross-flow arrangement?
You need to share as much info as possible to get solid input on suggestions.
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This worked surprisingly well for my wife's stock 305:
gbodyforum.com
1992 Camaro "The Lady Mullet" Z28
Since it looks like you were having barrels of fun I would assume you missed the auction, so I got you these
gbodyforum.com
A test pipe will add sound, in place of the catalytic converter. If you need more, headers and true 2.25" or 2.5" dual exhaust will not only add sound but at least 30 hp/tq. Carefully remove the factory exhaust, including manifolds and store it away carefully. Nobody makes it and probably never will again. If that still isn't enough, a bigger cam adds sound but you can't go too big on a 5L with just over 8 to 1 compression. Good luck.
If you live in the US, removing the converter or adding dual exhaust is illegal. Most honest exhaust shops will refuse to build or repair illegal exhaust to avoid stiff fines.
Just run it pig rich, melt the cat hollow, and have the same effect. Because you're not smacking it with a pipe to gut it it wouldn't show evidence of tampering.
I've seen this posted many, many places of late, and, it contains some grey area assertions and misleading information.
I believe that you are getting at comes down to the fact that alterations/amendments were made when the clean air act was reauthorized in 1990 by congress.
Following those changes, the EPA issued a formal statement related to rules promulgation in 1991.
Our cars predate the 1990 amendments and clarifications the EPA says, and quote, "individuals are now prohibited from tampering" under the answer to question 8. That language in and of itself clearly implies there was no prohibition explicit previously from an enforcement standpoint.
In fact, it was one of the amendments in Nov 1990 that for the first time prohibited tampering by private individuals. (See letter intro)
What does that tell me? Well, aside from state specific laws to the contrary, as long as the parts present either lack any part number (custom headers, or, pipes off cast factory manifolds) or are date stamped before 1990, is there anything to say it hasn't been there / they wouldn't be able to prove it hadn't been there since before the amendment, and done by some private individual before that date.
That doesn't help you with any newfangled plastic garbage cars, but, your gbody is a different story.
Remember, innocent until proven guilty. I'd also think that any modifications that could be grandfathered in as existing before 1990, and, before a state statute stricter than the federal one re: private party modifications was enacted, should prevail in a injunction against state action/repair demands.
Remember, trials are about evidence. If the state didn't have a strict statute on-books when the car was new, and, you can get ahold of an affidavit from an owner stating there was dual exhaust or no cat before 1991/state statute, whichever was first, you have evidence. Doesn't have to state WHO made the change, just that it was there. Then you have evidence. Burden shifts to the state to have evidence to show the modification didn't exist that far back in time, OR, that the non-conforming area had been repaired since 1991/the statute. My guess is they would have no such evidence.
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