408 idle with Beyea 10 mufflers
Short idle video of the new 408 setup with Beyea 10 mufflers.
Never seen these mufflers before but with turndowns attached were only about 40 each from summit. They are mounted right to the header. Something to pretty much just pass tech inspection
12.7:1 CR, 11r190 heads, put down 492 rwhp through a c4.