Jun 8th, 00, 07:47 AM
I'm going to upgrade my exhaust system and Ive been told that Summitt sells a Flowmaster complete kit for a 69 camaro. This kit comes with a H-pipe. What exactly does it do and is it better for street/strip or both?
Jay 69 SS-350
Jun 8th, 00, 09:20 AM
What it does is balances the exhaust pulses, you gain horsepower with it.
Jun 8th, 00, 10:40 AM
In balancing the pulses, it increases exhaust scavenging. This helps to keep the exhaust moving throughpipe, and when that happens, there is a small vacuum effect at the exhaust port. This is a good situation because it helps to pull spent gases from the combustion chamber as the exhaust valve opens. There is a moderate HP increase by doing this, but the torque increases can be significant. It doesn't make sense not to use an H-pipe, cost is negligible, but gains are good.
1969 Z28, 406SB