Exhaust system question
Thread Starter
Instructor
Joined: Nov 2015
Posts: 195
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From: Ellenton, Florida
Exhaust system question
My 1978 Corvette has a true dual exhaust system with an "H" crossover pipe connecting the two sides. There is no catalytic converter. My question is there an advantage to having a crossover pipe? I have heard that it evens out the engine pulses from both banks of the engine and therefore, an advantage. As I recall back in the day, none of my previous performance cars with dual exhaust had crossover pipes, just two exhaust pipes back to the mufflers and tail pipes. What is the story on these crossover pipes. Is it an advantage to have them or not?
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
'Google' can be your friend on questions like this.
https://www.google.com/search?hl=fr&...+over+pipes+do
DUB
https://www.google.com/search?hl=fr&...+over+pipes+do
DUB
Tech Contributor
Joined: Jun 2004
Posts: 20,827
Likes: 959
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
My 1978 Corvette has a true dual exhaust system with an "H" crossover pipe connecting the two sides. There is no catalytic converter. My question is there an advantage to having a crossover pipe? I have heard that it evens out the engine pulses from both banks of the engine and therefore, an advantage. As I recall back in the day, none of my previous performance cars with dual exhaust had crossover pipes, just two exhaust pipes back to the mufflers and tail pipes. What is the story on these crossover pipes. Is it an advantage to have them or not?
The closer the crossover is to the header collector, generally the better the results.
David Vizard is the guy who's done a lot of work on this stuff. Lots of good stuff in his books.
