bigjoe1 wrote:The best performing mufflers I have ever seen, the Magnaflow straight through, are also very quiet== They are soo good, I always dyno test with the Magnaflow mufflers instead of just open headers. My neighbors love my now. The mufflers do NOT have to be lowd to be very good.
JOE SHERMAN RACING
illfish wrote:On a 572 inch hemi street motor in a light weight A body, is there really a substantial benefit of running an xpipe or hpipe. Headers are 2.250" full. Auto trans. 6,300 rpm redline. Fitment is the big issue. Engine makes upper 700's horsepower. Not concerned with 10-20 hp. Can get it elsewhere. Ideally, I want to run true dual exhausts with no crossover.
illfish wrote:Just running dual 3" pipes to spintech mufflers that have a side exit in front of the rear tire. Might throw some magnaflows inline prior to spintechs to really hush it.
MadBill wrote:Per the Vizard calculations, 2 x 3" pipes are good for a max of 700 HP (with 800+ CFM mufflers)
Orr89rocz wrote:... but with long lengths there probably is more backpressure and losses involved. Not sure where that 115cfm flow factor comes from....