The Dodge Challenger Message Board

There's a lot to take in there Daveman buts its a very interesting topic and one that I've looked long and hard at since I got me hands on the little strokers when i was a kid

I met John Kaase in 2010 at an Engineering Seminar. He explained that on a Race/Hi- Perf. engine the header primary should be 10% larger than the exhaust valve and no bigger. This would make my primary's at nearly 2 inches inches in diameter.(2" primary tube headers) Exhaust velocity is critical for pressure wave tuning. It's good to hear the X or H pipe systems are on the right track. I think I am going with Dyno-Max Ultra flos. All in all a lot of expensive and time consuming testing which most Rodders don't have access to. When the time comes I will have unlimited chassis dyno tuning,(at my Alma mater). SuperFlow Chassis dyno, I would love to see the latest Nascar exhaust tech, they have what amounts to the closest exhaust system,(V-8, cam in block, same type of chassis, under carriage design, nearly same length), as our Muscle cars and they are paid to extract as much power as the rules allow. I do know that at some race/show car with racecars I see, they hide the Collectors,,as the article mentioned,,there is a lot of tuning on the table with Collector size & shape. Interesting what he said about the tailpipe after the muffler. Didn't you try to mod your Vettes tail pipes Dave,,to no avail ? Too many curves! Erotic,,I mean exotic exhaust!

my tailpipe mod by-passed the muffler to make the exhaust louder. But it didn't make it that much louder and 50% of the gasses were still going through the mufflers.

I think to see any real improvements on my Corvette it would also need some long tube headers and high flow cats.

dave-r wrote:my tailpipe mod by-passed the muffler to make the exhaust louder. But it didn't make it that much louder and 50% of the gasses were still going through the mufflers.

I think to see any real improvements on my Corvette it would also need some long tube headers and high flow cats.

Still pretty impressive #s you posted on the 1/4 with a stock exhaust! Yeah, headers, cats, not a lot of space under there and low clearance, but yeah they make a lot of parts for the Vettes and most are in stainless! I wonder why no one makes Stainless Headers for B-Engines???

Actually, to get any real improvements I need a blow job. http://www.procharger.com/c5_corvette.shtml

dave-r wrote:Actually, to get any real improvements I need a blow job. http://www.procharger.com/c5_corvette.shtml

Very impressive! (The Pro-Charger & the BJ) 10 second Vette! WOW!