shorty headers
The Best V8 Stories One Small Block at Time
I had bought, swapped off and saved, and put back. It has a much
cleaner merge than the Jet-Hots. Great long tubes and a crappy
merge can easily be worse than a good shorty based plumbing
lineup. And a stock muffler could defeat them both. And not all
long tubes are equal either.
Whatever restriction is left in the exhaust is not the JBAs' fault; they
flowed enough to blow an O2 sensor out of the hole on the Mufflex
tubes downstream (also used, with worn threads).
Beware of the ones you see on eBay, there are some truly crappy
ones going for about $99 that have bad collector designs (like a
1/2" sharp edge at the flange, turbulence galore). The JBAs have
a nice collector with even a baby velocity spike, and everything is
smooth. BBKs are pretty, I haven't ever looked at the innards.
M6 guys will benefit from the midrange torque build-out from the
resonant scavenging, some. Guys with an A4 and a high stall speed
just don't spend any time in the mid RPM range at high pedal. So
all I need is as little backpressure as can get past the sheriff.









